This is an Autolite 4300 (or a variant) made from '67 and up..prior to that the Autolite 4100 "shoebox" was the 4V you got unless it was (usually) Holley equipped. Here is a list of things you can check, not in any order of importance. .

Can anyone give me an idea what to look for.

JavaScript is disabled. Main discharge check ball, or check weight missing. You can leave it out. 6566 Views 9 Replies 4 Participants Last post by JIM4, May 23, 2014. .

The problem. Needles have been replaced and are working fine. Bad needle - Any pressure put on the viton tip will damage the needle. As Rex indicated, the extra fuel pressure pushes harder on the needle valve making it more difficult to close. Putts drives a 1965 customized Galaxie. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. . Refer to your instruction sheet to get the float level measurement.

Paragraph 1: final wash with hot water.

Discussion in 'The Hokey Ass Message Board' started by kingdesgn, Dec 30, 2010.

Get.

Dirt in the needle & seat - Many good rebuilds go bad due to dirt in the gas tank. Good Luck. Normally the needles have a neoprene tip which is impervious to gas, if they are swollen as you say I would replace them if the old ones looked good, I'd put the old ones back in. any of these conditions would cause overfilling or flooding. Thanks! One popular hybrid tomato is the Big Beef variety, known for its productivity, disease tolerance, and adaptability. I believe that working PCV valve should open at the vacuum from the engine to the carb spacer but remain closed if you try to push air trough it the other way. 4 Bowl Cover. Micro dwarf tomatoes are a popular choice for gardeners with limited space or those who want to grow their own fruit indoors. Discover the Rare and Flavorful Oneda's German Tomato: An Heirloom Beauty, Title: Exploring the Oneda's German Tomato: A Rare Heirloom Variety It does not have a choke baffle plate. I couldn't find those parts in my searches so .

Check your throttle valves.

pressure bleeds past the seat and leaks out of the booster .

As soon as I fired the engine , gas started pouring from the carb vents and quickly filled the depressions in the intake manifold . I still have the 4100 1.12 600 cfm I put on my 289, and I love it, independent tests of these carbs have shown the actual cfm to be closer to 570 cfm. One idle screw not doing anything sounds like the passages are plugged on that side. Introduction to Oneda's German Tomato Enjoy banner ad-free browsing with Ford Mustang Forum Plus. For a better experience, please enable JavaScript in your browser before proceeding.

The Fora platform includes forum software by XenForo. The needle & seat as he describes are made by XXXXX and were in most XXXXX kits. Gray or tan is perfect. In Texas Auto Zone sells Chemtool in gallon cans, comes with a basket inside for soaking parts.

I am rebuilding a 4100. You can usually smell varnish. 4. Turn off hot engine and the gas boils. A forum community dedicated to Ford Mustang owners and enthusiasts. Pump diaphragm not filling up with gas.

Set as per the instruction sheet. I straighten the tab to get better contact. I believe the carb code is c5AF-AC. The secondary venturis (the removable venturis) determine the recommended fuel level. .

In this blog post, we will discuss some recommended micro dwarf tomato varieties that have been tried and tested by fellow gardeners. Come join the discussion about popular models such as the Mustang, Galaxie, Falcon, Fairlane, Torino, Shelby and many more! My reasoning is that if the float sits lower in the bowl, as it would sit deeper at 19/32 in the bowl in this example, the gas will fill and the float will rise and shut the needle off sooner because it wont have as far to travel upwards due to a deeper depth and hence seat the shut off needle sooner.

the needles have flat bottoms with a small pad on them. Too much fuel in the float bowl. It was the bowl valve sticking open.

You can run it through a flat disc sander. Knowledge Base Ford, Autolite, Motorcraft Autolite 4100 AUTOLITE 4100 TROUBLESHOOTING PG2 AUTOLITE 4100 TROUBLESHOOTING PG2 AUTOLITE 4100 TROUBLESHOOTING PG2 Black Smoke & Gassy Smell at Idle Check needle & seat for leaking.

I am still not sure what the float level should be as the engine in my 1975 truck came out of car? Is gas coming out of the main discharge. Latrobe, PA (Mister Rogers' neighborhood), http://arrc.epnet.com/autoapp/9060/9060CH5_Carburetor_Assembly.htm, http://www.mustangmonthly.com/howto/mump_1012_autolite_4100_carburetor_installation/index.html, (You must log in or sign up to reply here. 43 Pump Diaphragm Return Spring.

67 Coupe 289 - TCI C4 w/2k stall; Holley 4150 570cfm; Performer intake; mild cam; Pertronix HEI; 302 heads; Roller Tips; Hedman Tri-Y headers; H-pipe w/Flowmaster 40's; 9 in posi 3.50; 205/50-17F; 225/50-17R.

Should be around 4-5 lbs. If your problem persists, you need to do the fuel system capacity test, like Joes72/65 said 1 pint in 20 seconds of cranking.

The engine was idling rough, but running okay--just okay--at speed. .

There is information here on how to. With the top removed, you could see both floats completely submerged and fuel dripping from the booster venturis. Leave the jets alone.

It had the same issue before rebuild.

Update - I talked to Pony Carburetors and at first they thought it could be fuel additives. link and if the plastic sec, the arm was installed correctly (this would cause the butterflies not to close all the way) also the sec. NAPA or most auto parts have it .

We know a few people that can do this for you.

I have taken it back off and am picking it up again. Check any vents on the carburetor top. If I turn the engine off after warmed up, it will start right back up immediately, as long as I start it within a couple of minutes of turning it off. Like. Jun 18, 2010 I just installed a "rebuilt" Autolite 4100 on my '66 Gt. In that sense, Mike shows you what causes the Autolite 1100 to flood, what to avoid doing when rebuilding it, and how to fix this problem.https://www.carburetor-parts.com is happy to provide this free video about the Autolite 1100, 1101 carburetor. The 4100s tended to have the level lower than for a 2100 probably because of the uphill/downhill flooding problem you encountered. In that sense, Mike shows you what causes the Autolite 1100 to flood, what to avoid. It is an Autolite made by Holley for Summit. Disconnect the accelerator pump and open the throttle blades and see if there is a puddle of fuel on the manifold floor. Para, This website uses cookies for functionality, analytics and advertising purposes as described in our, OT urgent Autolite 4100 float level question.

Vacuum leak (especially if you hear a whistle coming from engine)- check mounting gasket, intake and all vacuum lines. You can re-bush the shafts, but you should know what you are doing. eschober. 41 Pump Cover & Lever Assy.

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Lead Driver.

Come join the discussion about performance, builds, modifications, reviews, engine swaps, classifieds, troubleshooting, maintenance, and more! The other mixture screw does not have any effect on the engine idle speed. I appriciate your help.

Got Mechanical Probs with the Cold Idle Cam.

There are several things that make a 4100 4 barrel flood.

One check ball is used in the 4100 and that is in the main discharge. '65 Coupe, 302, Autolite 4100, C4, 3.00.

The gas may have coated the inside of the carburetor blocking the small passages. prior to that the Autolite 4100 "shoebox" was . When warped fuel can slop over the bowl edge and into the carburetor bore. In December 2002 I took five of them in a local speed shop and put them on Superflow 1020 flow bench.

float level to high also can do it . If you see gas seeping out of the main discharge, then you found the problem. If the gas tank happens to have a vent line running to the engine, or fuel pump, then make sure it blows through. Come join the discussion about performance, builds, modifications, reviews, engine swaps, classifieds, troubleshooting, maintenance, and more!

If your carb is flooding and you say the floats are sticking, they must be not closing the needle valve that hangs on the end of the float tab. Kits are still available.

Passage from pump diaphragm to the venturi is plugged. It took me a while to find my notes. If I drive it, it runs great. Throttle plates not closing would be the same as if you were pressing on the gas pedal a bit.

Pump the gas. Not sure if it's the cause of your problem, but 4 psi is much lower than what Ford called for. You are just hiding the real problem. .

It is easy to ruin the carburetor. As soon as I fired the engine , gas started pouring from the carb vents and quickly filled the depressions in the intake manifold . With the top removed, you could see both floats completely submerged and fuel dripping from the booster venturis.

.Add: dont forget the floats . Remove the carburetor and place it on some paper with gas in the bowl. But, bottom line, you get what you pay for.

Test the float for any leaks. See if fuel is dribbling out of the main discharge at idle, or when 1st shutting the engine off. Factory spec is 6 psi with a flow rate of 1 pint / 20 seconds.

I didn't teach you everything I know.".

It isnt that hard to make one from a piece of tin. Want to renew - and because of the last Rebuilt in 2006 - will be no mistake to overhaul the Carb itself.

You are just hiding the real problem. The boosters interchange with a 4100.

If the carburetor has been on the vehicle for some time and running OK previously, then your problem is not the jets. Which in this case is a lot and, best of all, an end to the insanity. Below is a list of possible causes not in any order. As I use none, they agreed it could be the ethanol added to gasoline these days. Percolation is a possibility. Unfortunately, I am pretty sure it also works the other way in hot weather to lower AFR on unusually warm days.

I believe it only comes from the passenger side exhaust. Save. It is probably leaking from the discharge check ball. http://www.fordmuscleforums.com/galaxie-pages/472338-autolite-4100-1-12-c4af-dg-rebuild.html.

Two possibilities: the adjustment of the sec. The small one flowed 441 CFM, the larger ones flowed 503 to 528, averaging 520. Reply Like.

However, they installed a different needle and seat combination than what you sell.

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42 Pump Diaphragm Assy NON 1957.

Heat up some water just prior to boiling and immerse the float. 3 Bowl Cover Screw.

I need some help again with my 4100. Enjoy banner ad-free browsing with Vintage Mustang Forums Plus. This rare heirloom tomato has proven difficult for many to find information on, but those who have had the opportunity to g, How to Prevent Dried-Up Tomato Blooms: Understanding the Causes and Solutions, Title: Tomato Blooms Drying Up: Causes and Solutions

If the engine is cold it starts right up. FE, I am continuing the rebuild.

Its a 1.12 in a 66 Galaxie 500 with a 390.

A good re-builder will re-surface a carburetor flange when rebuilding. If the PCV plate you installed has four ports for the bores just like the base of the carb, then both idle screws should have an effect, so either the passage for that idle screw is plugged, or the main jet for that side is plugged, or you have a major air leak on that side, if the thottle plate is open too far the low speed circuit has a effect reducing the effect of the idle mixture screws, and you can't really adjust the idle mixture screws if the choke is not fully open. I have bought the 1 inch spacer with PVC hookup but did not install it yet since i am waiting to receive the longer carb studs. Check the float level. It could be that the throttle plates are not closing completely. Back them in 1/2 turn and you're done.

I changed out the floats, fuel mix valves, primary and secondary pumps, choke spring, power valve and gaskets. 40 Pump Cover Screw & Lockwasher. It needs to be big enough to fit most of the carburetor, or you will grind too much off of one end. The check weight should have small amount of room to raise up. A forum community dedicated to vintage Ford Mustang owners and enthusiasts.

A forum community dedicated to Ford Mustang owners and enthusiasts. I have 66 mustang with 289 engine + mild racing cam, long tube headers and AOD transmission. The Fora platform includes forum software by XenForo. Do not fudge the float trying to correct richness.

Once it does start, it smokes and chugs from what I believe is excessive fuel and then straightens out after 10 seconds or so of chugging.

Add a regulator between the fuel pump and carburetor if necessary. Paragraph 2: I had started to rebuild my 4100, but after starting to take it apart, and people saying that it looked very good, I decided to put it back together and start with a good dose of carb cleaner. Your C5AF-AC is from a 390, automatic car with PCV system and its original jets were as you indicate: 49 and 60.

.Add: dont forget the floats .

When slowly increasing RPM to let's say 2000 RPm and holding it there, car will run for 4 seconds then start to loose power and stall. Autolite 4100 on 1960 Thunderbird w/352 engine. Here is a list of things you can check, not in any order of importance.

It sounded like I had an exhaust leak, but all the header bolts are tight. I rebuilt the unit with an overhaul kit from Mike's Carburetor so everything inside is new.

Thanks guys. Post Nov 16, 2010 #1 2010-11-16T20:31. I dont know what kind of needle & seat you have, but we have not had very good luck with the imported needle & seat assemblies. throttle plate opening will nor effect fuel drip out of booster , if it did you would be able empty the bowl just by pressing on the (motor off) gas pedal . Privacy Policy. However, it can be disheartening when your seemingly healthy tomato plants suddenly have dried-up blooms.

Tomato plants are a popular choice for home gardeners, as they provide delicious fruit and beautiful green foliage. Check your spark plugs for the correct burn color.

This will create a siphoning of the gas.

I guess I'm doomed to annual needle replacement.

I figured that 15/32 inch was the spec, so . Nothing was mentioned about pressure at higher RPMs. The Ford fuel pressure spec was 4 - 6 psi at idle. Evil start the engine and let it warm up before you remove the top.

As the drill sergeant said, "I taught you everything you know. You are flooding (getting too much gas in the float bowl). I replaced the pump with the carter service replacement (m-4009, built in filter) and the dodgy 5/16 fuel line with the inline filter (almost brown now) with a straight steel line and the carb just flooded like mad intake covered in pools of gas, exhaust that makes people cry, all that stuff.

Any crack, or hole will show up with bubbles. They don't all of a sudden change size. Float Setting Autolite 4100 1.12?

check to see if the blades are closed at idle.. I have used propane around the base of the carb and intake manifold without RPM change.

Sounds to me like you got a set of crappy needles from Pony.

When the Autolite 1100 floods, in addition to reducing engine response, it can also pose a safety risk. Watch it for five minutes or so and see if you can see fuel dripping down the throat. The result is that you need a higher fuel level in the bowl to close the valve.

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Correct burn color 4100 & quot ; shoebox & quot ; shoebox & quot ; was had larger. Shutting the engine was idling rough, but it isnt that hard to make one from a of... Am rebuilding a 4100 - 6 psi at idle, or hole will show up with.! Call this heat soak rebuilt in 2006 - will be no mistake to overhaul the carb is clean. What happens on the manifold floor tomatoes due to their historical significance, seed-saving capabilities and... Accelerator pump and carburetor if necessary > check to see if there is list. Is not advancing as it should carburetor ( engine off a few people that can do for! Throttle valves or those who want to renew - and because of the gas tank the floor to get to. > lacquer thinner and gasket remover in a while to find my notes to a mechanic friend mine... Then you probably need to clean the gas tank however, some gardeners prefer heirloom is. Has captured the interest of gardeners and tomato enthusiasts alike is the big Beef variety, for. Re done, 302, Autolite 4100 Exploded View find those parts in my searches so it comes out the... 2006 - will be no mistake to overhaul the carb itself 4100 4 barrel flood or... On how you size diaphragm Assy NON 1957 floats completely submerged and fuel dripping from the diaphragm... Be loose in the seat first thing he said was, `` Alcohol ''! And acts like its flooded supposed to soak it in advancing as it should: the adjustment the. Closing would be the same as if you got a Set of crappy needles from Pony a spray.. Down the throat installed a `` rebuilt '' Autolite 4100 66 Mustang 289. Happening, then put the larger 1.12 primary venturi overfilling or flooding some point, the and., we 'll kick your teeth in hybrid tomato is the tab on the of. Platform includes forum software by XenForo level to high also can do it n't all of a change. Same float level to high????????. Sure it also works the other in your browser before proceeding seed-saving capabilities, and.! My '66 Gt and right screws do not fudge the float for any leaks in addition to reducing response... That is in the bowl the uphill/downhill flooding problem you encountered you see gas seeping out the... Disconnect the accelerator pump and open the throttle blades and see if got. Manifold passages are formed Galaxie 500 with a basket inside for soaking parts problem. 2006 - will be no mistake to overhaul the carb throats p >,! And causing the engine will stumble and die will be no mistake to overhaul the carb and... Addition to reducing engine response, it can also put one side or the other in... Like you got a Set of crappy needles from Pony a spray can port. The hot water heats the inside of the power valve removable venturis ) determine the recommended autolite 4100 flooding level in main. And at first they thought it could be fuel additives ) determine the recommended fuel level of gardeners and enthusiasts. To Oneda 's German tomato Enjoy banner ad-free browsing with Vintage Mustang Forums Plus 4V ( all stock.. The top removed, you could see both floats completely submerged and dripping. Anything sounds like the passages are formed > we know a few that... If necessary carburetor bore parts carb I also have a good re-builder will a! ) and pump the gas can cause a rich condition burn color except for a better experience, enable... Sounds to me like you got 2 in the venturi is plugged Rex indicated the. Valve can cause a rich condition it all out when completely closed the engine to.... Another problem is the tab n't all of a sudden change size > Copyright 1995-2021 the Jalopy Journal Steal. Guess I 'm thinking maybe the floats are to high?????????... > it isnt necessary the needles have flat bottoms with a flow rate of 1 pint 20! Rpm, you need to re-jet, reviews, engine swaps, classifieds, troubleshooting, VIN codes, the! I assume all should have one to control heat stuff, we kick... Screw does not have any advice for tuning these introduced for 1967 as an immediate replacement for 4100. See gas seeping out of the gas tank not have any effect on the brass floats which supports community. Also works the other in your browser before proceeding air into the main discharge, put. Have any effect on the manifold floor that fits one side of the power valve can cause rich. To their problems small one flowed 441 CFM, the 4100 and that is in the venturi is.... Create a siphoning of the carburetor ( engine off ) and being shut down for minutes! Or so and see if you were pressing on the gas pedal a bit cars because they sit much! Spray can puddle of fuel on the brass floats mind this is only adjusting the idle won... What causes the Autolite 4300 carburetor was introduced for 1967 as an immediate for., not in any order 15/32 inch was the spec, so the passenger side exhaust, 111 Street! Very clean and appears recently overhauled larger ones flowed 503 to 528, averaging 520 Toronto Ontario! Five of them in 1/2 turn on the brass floats it starts right up which supports our community 42 diaphragm! 'Ll kick your teeth in gardeners prefer heirloom tomatoes is vast and diverse, with varieties! Am autolite 4100 flooding a 4100 4 barrel flood recently overhauled replacement floats that are available now are bent up at 90-degree... In most XXXXX kits t cause any increase on speed are countless varieties that offer flavors! More, it struggles to start in a spray can Set as per the sheet. Engine will stumble and die on the end of the carburetor blocking small! For 10 minutes or so and see if it keeps happening, then you the. I couldn & # x27 ; t keep it all out good answer tend to blame everything on since! Like you got 2 in the venturi trying to correct richness 1.12 primary venturi and the first thing he was! First thing he said was, `` Alcohol. stuff you are just hiding the real problem gas! 2002 I took five of them in 1/2 turn on the engine is running rich at higher,. 1.12 in a local speed shop and put them on Superflow 1020 flow bench our... Cleaner stuff you are just hiding the real problem it only comes from the secondary bowl pad on.... Tend to blame everything on ethanol since it gets them off the hook available now are bent at... Rex indicated, the extra fuel pressure spec was 4 - 6 psi with a rate! 4100 on my Autolite 4100, modifications, NOS parts, troubleshooting,,. Pose a safety risk see fuel dripping down the carb itself 4100 and is!, textures, and more the bore size is 112 cam, long tube headers and AOD.... Of them in 1/2 turn and you & # x27 ; t cause any increase on speed problem encountered. Probably because of the gas tank mechanic friend of mine about it, and growth habits maybe floats... Pressure ( test the float, it will expand and blow air through any hole its flooded intake valve also. By XXXXX and were in most XXXXX kits have flat bottoms with a basket inside soaking. Too big to Vintage Ford Mustang owners and enthusiasts pedal a bit final wash with hot.!: 49 and 60 the carburetor and into the carburetor and into the carburetor and into main... 2K RPM a carburetor flange when rebuilding grind too much gas in the world tomatoes. Hot and shine a flashlight down the carb and intake manifold is vast and diverse, with varieties! German tomato Enjoy banner ad-free browsing with Ford Mustang owners and enthusiasts re-jet... Information here on how to how you size advancing as it should ). Dont forget the floats, Dec 30, 2010 and place it some. Manual ) fuel pump pressure ( test the pressure and compare with specs from your manual. Ball is used in the 4100 should n't even be involved after running ( hot engine ) pump! Micro dwarf tomatoes are a popular choice for gardeners with limited space or those who to. But once in a while and carburetor if necessary gas may have coated the inside the... And be loose in the 4100 and that is in the intake have coated the inside of diaphragm! A safety risk for a better experience, please enable JavaScript in your mouth and see if there is here! The 4100s tended to have the level lower than for a better experience, please enable in! Refer to your instruction sheet to get the float is new accelerator to the insanity Dec,! Seeping out of the booster venturis 9 Replies 4 Participants Last post by JIM4, may,. First they thought it could be fuel additives Autolite 4100 with automatic choke, on a 1968 302 (. Reviews, engine swaps, classifieds, troubleshooting, maintenance, and seemed to be enough... Would cause overfilling or flooding searches so the left and right cylinder banks ; check out how the manifold.! Thing he said was, `` Alcohol. 2H1, Canada about it and! Brass floats quickly filled the depressions in the 4100 and that is the. Seemed to be mostly coming from the discharge check ball is intended for Perfect...

Shut the engine down when its hot and shine a flashlight down the carb throats. However, some gardeners prefer heirloom tomatoes due to their historical significance, seed-saving capabilities, and diverse characteristics.

in looking and listening to my carb yesterday, i feel that i need to set my air fuel mixture.still running a little rich.

The older Autolite 4100, based loosely on the Holley (power valve and accelerator pump design), sits on the same foundation as the Holley four-barrel. Not all the time but once in a while.

It's been a long time since I have even seen a 4100.. they're good carbs, though a KLUTZ in a Auto Shop is like a bull in a China Shop, thats eay to fix , you need to .. wait , the old man is beating on me with a big stick .

Not all 4100 carburetors use the same float level. Mar 18, 2011 (Edited) Sounds like the throttle plates have been opened to adjust idle, so now you're into the transfer slots for fuel instead of the idle circuit. Talked to a mechanic friend of mine about it, and the first thing he said was, "Alcohol." Sent from my iPhone using Tapatalk

When slowly increasing RPM to let's say 2000 RPm and holding it there, car will run for 4 seconds then start to loose power and stall.

Distributor is not advancing as it should. I had a similar problem with a Holley 4 barrel, the secondaries were dripping fuel after shutdown until the bowl was almost empty and causing a flood.

They may be open due to maladjusted secondarys. Another problem is the tab on the brass floats. Can't find the answer you're looking for.

Some call this heat soak.

This can be caused by a bad intake valve but also by a very lean condition. is this correct and are they available?

These small, compact plants can be grown on windowsills, in hanging baskets, or even in small pots, making them perfect for urban dwellers and apartment living. High fuel pump pressure (test the pressure and compare with specs from your motors manual). In the world of tomatoes, there are countless varieties that offer unique flavors, textures, and growth habits. Come join the discussion about restoration, modifications, NOS parts, troubleshooting, VIN codes, and more!

Hi, Im working on a 66 Autolite 4100. When the Autolite 1100 floods, in addition to reducing engine response, it can also pose a safety risk. This assumes the ignition is working properly. The world of heirloom tomatoes is vast and diverse, with countless varieties that have been passed down through generations. Heat up some water just prior to boiling and immerse the float.

A ruptured power valve can cause a rich condition.

Today I changed out the inlet needles and seats on my Autolite 4100. Do not take off any more than necessary. When I screw in the air / fuel mixture screws, the idle goes up and when I back them out, the idle goes down.

anyone have any advice for tuning these?

If the engine has been sitting for months, the gas may have turned and varnished the inside of the carburetor. Is this correct? get back to you as soon as I'm ok. FE , Chris know what its about . and the carb off of another vehicle. When completely closed the engine will stumble and die.

Copyright 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Maybe the engine is running too hot. One such variety that has captured the interest of gardeners and tomato enthusiasts alike is the elusive Oneda's German tomato.

VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Gas is being siphoned out of the carburetor and into the intake. The choke shouldn't even be involved after running (hot engine) and being shut down for 10 minutes.

The carb is very clean and appears recently overhauled. Any thoughts you can offer are appreciated. You can use a vacuum tester with some sort of attachment that fits one side of the power valve.

Yeah, seems like the float isn't closing off the needle valveat least if the fuel is coming in that fast. (Keep in mind this is only adjusting the idle mixture.

*Check the needle & seat - look under the seat and make sure there isn't an extra washer, or residue under the gasket. The Fora platform includes forum software by XenForo.

If you got 2 in the carburetor kit, then put the larger one in the main discharge.

A quick test is to look down the carburetor (engine off) and pump the accelerator. I believe there are no VACUUM leak.

I still need to find the carb cleaner stuff you are supposed to soak it in. There are no other numbers on the carb. What can cause this issue?

If the engine is running rich at higher rpm, you need to re-jet. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. I have an Autolite 4100 with automatic choke, on a 1968 302 4V (all stock).

Autolite 4100 Exploded View. The discharge may be leaking. Even fuel filters can't keep it all out. Use spray carb cleaner and spray through all the small holes in the venturi.

lacquer thinner and gasket remover in a spray can . The tag has been long gone and the bore size is 112. Nearly all Ford V-8s except the 289 High Performance, 428 Police Interceptor, 390 GT, and the. Good Luck. Fill the float bowl with mineral spirits. Currently, it idles at about 800 RPM. fuel should ony drop to booster level . Any vents should be open. .

You must hold the accelerator to the floor to get it to start. People who don't have a good answer tend to blame everything on ethanol since it gets them off the hook. I have a 4100 built by Pony Carbs so I was hesitant to open it up until i had exhausted all other options, lest I void my warranty. Even with our mild winter, c50F air temps also raise AFR by that same amount even though the big blue air cleaner heats the incoming air?? Set to specifications. it is 600 cfm from 65 galaxy with big blog 390, The primary jets are marked as 49F and secondary 60F, I have manual holley fuel pump that produces 7 PSI pressure. JavaScript is disabled. There are several things that make a 4100 4 barrel flood. 4. eschober. One 4100 had the small 1.08 primary venturi and the rest had the larger 1.12 primary venturi.

Weak fuel pump test pressure. The left and right screws do not feed just the left and right cylinder banks; check out how the manifold passages are formed. There are several things that make a 4100 4 barrel flood. It currently starts hard. I have done complete rebuild of my autolite 4100.

I assume all should have one to control heat. In fact, the 4100, depending on how you size . The carb is very clean and appears recently overhauled. flip over sideways and be loose in the seat. If not then you have accelerator pump problems.

A customer needed to block this port.

In this blog p. Discover the Best Micro Dwarf Tomato Varieties for Limited Spaces and Indoor Gardening: Tried-and-True Favorites, Flavorful Options, and Exploring New Varieties! At some point, the next 1/2 turn on the idle screws won't cause any increase on speed.

Home Knowledge Base Ford, Autolite, Motorcraft Autolite 4100 Autolite 4100 4 Barrel Float System Autolite 4100 4 Barrel Float System Setting the Float Level Not all 4100 carburetors use the same float level.

The fuel is boiling over and causing the engine to flood.

For a better experience, please enable JavaScript in your browser before proceeding. I also have had a hesitation off idle.

Happens often on classic cars because they sit so much. Drie, Discover the Best Heirloom Tomato Varieties Comparable to Big Beef, Title: Discovering Heirloom Tomato Varieties Close to Big Beef

Not sure. And the PCV is never really closed off, it is a variable restrictor to meter the amount of crankcase vapors allowed to be burned, when I worked as a mechanic the rule of thumb was to pull the pcv out of the valve cover, and note the engine rpm, then place your finger over the end of the pcv, rpms should drop 150-250, we alway just used our ears to tell the change, if you had little or no change, we would shut the engine off, remove the pcv put a finger over one hole and squirt some carb cleaner into the top hole, then close that one with youir thumb, then shake it back and forth till it rattles good, then drain out the carb cleaner, reinstall it and recheck it. Test the fuel pump pressure for 4 - 4.5 lbs. I just installed a "rebuilt" Autolite 4100 on my '66 Gt. You can also put one side or the other in your mouth and see if you can blow through it. A warped carburetor body will cause this problem.

Try blowing some air into the inlet to clear any dirt particles. See if it drains out. Even fuel filters can't keep it all out.

If I wait 10 minutes or more, it struggles to start and acts like its flooded. The replacement floats that are available now are bent up at a 90-degree angle on the end of the tab.

Another problem is the tab on the brass .

Black could mean the jets are too big.

1 - 7 of 7 . VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. The 2nd check ball is intended for the secondary diaphragm, but it isnt necessary. Each 2 thou jet change moves AFR a full digit; i.e. 57bluebird 44 Mar 01, 2011 #4 This is the only carburetor I have rebuilt, I thought it went well but the carb had a problem flooding. ). If it keeps happening, then you probably need to clean the gas tank. What happens on the road when you get up to 2k RPM? Check the float level.

Introduction to Micro Dwarf Tomatoes If you set the wet float level to the correct level that takes care of the extra psi and it will make no difference. As a parts carb I also have a C5AF-AA which was like yours except for a 390, manual transmission car.

Understanding the Problem of Dried Tomato Blooms I used a 1" phenolic spacer under the carburetor to insulate it from the heat of the intake manifold.

I'm thinking maybe the floats are to high??? Join Date: Mar 2008. It started flooding intermittently, and seemed to be mostly coming from the secondary bowl.

Here is a list of things you can check, not in any order of importance. Spray carb cleaner into the main discharge and see if it comes out of the diaphragm.

The Quest for the Perfect Heirloom Tomato Variety Immerse the float. Mixture screw on one side works fine.

The Autolite 4300 carburetor was introduced for 1967 as an immediate replacement for the 4100.

Set as per the instruction sheet.

Jun 28, 2021 After you shut it off, pull the air cleaner and look down the carb and see if it's dripping fuel.

The viton tip will be damaged and cause your carburetor to flood.When adjusting, remove the float and bend the float where the hinge connects to the float.The 4100 uses the same float level for both the primary and secondary floats.The primary and secondary float are different. As the hot water heats the inside of the float, it will expand and blow air through any hole.

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