Help with Replacement Carb
#1
Help with Replacement Carb
Hello everyone,
I am on my second remanufactured carb from advance auto and both of them are giving me the same problem. Carb is the Holley 2bbl stock carb
1951 F1 8BA Flathead
The carb pours gas out of the accelerator pump tube on the passenger side of the carb. I am running 2 lbs of fuel pressure at my regulator so I dont think over pressure is the issue.
What would cause both carbs to do this? Is it something I am doing wrong or is this a common problem? Im not even sure what seals the rod to the bore so gas doesnt leak out.
Any help or suggestions would be greatly appreciated!
I am on my second remanufactured carb from advance auto and both of them are giving me the same problem. Carb is the Holley 2bbl stock carb
1951 F1 8BA Flathead
The carb pours gas out of the accelerator pump tube on the passenger side of the carb. I am running 2 lbs of fuel pressure at my regulator so I dont think over pressure is the issue.
What would cause both carbs to do this? Is it something I am doing wrong or is this a common problem? Im not even sure what seals the rod to the bore so gas doesnt leak out.
Any help or suggestions would be greatly appreciated!
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We have a carb expert or two here on the forum.
#6
Here is the complete, official manual for the later Y-block version of the Holley 94. It tells how to set the float and (just as important) set the float drop.
The Old Car Manual Project: Manuals and tech info online
The Old Car Manual Project: Manuals and tech info online
#7
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#8
From that manual it seems as if there is a felt seal that is supposed to be in place to prevent fuel from leaking down the acceleretor pump tube. I am thinking mine is not working properly or is dried out. Is there something I can do to recon dition this seal to make it do what it is supposed to do?
I think I may just go to advance and order a 3rd one. For $200 you would think it would just work.
I think I may just go to advance and order a 3rd one. For $200 you would think it would just work.
#9
Maybe the same guy made the same mistake twice? That carb is pretty simple. The manual that Ross recommended for you should help. It even has pictures for guys like me.
#10
Mine was float level alone. Newly rebuilt carb from a respectable vendor. The float stop level can range from 1 5/16 to 1 15/32 depending on application. Float was set too high and not ever completely shutting the valve (needle). Gas poured out on the passenger side around the accelerator pump. Hated to take the top off a fresh carb but adjusting the float level properly with the top upside down fixed the problem.
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From that manual it seems as if there is a felt seal that is supposed to be in place to prevent fuel from leaking down the acceleretor pump tube. I am thinking mine is not working properly or is dried out. Is there something I can do to recon dition this seal to make it do what it is supposed to do?
I think I may just go to advance and order a 3rd one. For $200 you would think it would just work.
I think I may just go to advance and order a 3rd one. For $200 you would think it would just work.
If you have an old carb around, check if it has a steel valve. If so, put it in your carb when you monkey with the float. Tap it lightly with a hammer to "set" it in the brass seat.
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Just to answer your question: Is it something I'm doing? The answer may be yes. Is there a good fuel filter in place? Or, are you filling the nice clean carbs with rust and debris? If you are pumping the carb full of crud, then the needle may not be able to seat and viola, there's the problem. Jag