Carb spacer question
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Carb spacer question
I have a 390 FE with an Autolite 2100 2 barrel carburetor. I am having some problems with backfiring through the carb. I am fairly new to working on carburetors. The guy I bought the truck from said that he thought the spacer needed to be machined because after a while it would develop a vacuum leak and start backfiring. I bought a new spacer and installed it along with new gaskets and a carburetor rebuild. Well, I started getting some backfire from the carburetor again... One thing I would like to ask: Is the solid surface (aside from the holes for the carb barrels) the top or is the side with the interconnected and exposed cavities showing the top? (Am I making any sense?) I just put it on the same way it was before, but some reason I find myself doubting...
Any sage like advice for a beginner like me? What can I try to get rid of the backfire?
Any sage like advice for a beginner like me? What can I try to get rid of the backfire?
Laughing Gas
Joined: Jan 2005
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have you checked the timing.
I have seen a dizzy put in backwards and the car would try to run but it was back firing through the carb. (ball of fire and everything)
does the truck run or did it run? and it just back fire through the carb every so often.
then how often?
I have seen a dizzy put in backwards and the car would try to run but it was back firing through the carb. (ball of fire and everything)
does the truck run or did it run? and it just back fire through the carb every so often.
then how often?
Laughing Gas
Joined: Jan 2005
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Originally Posted by tcope
I have a 390 FE with an Autolite 2100 2 barrel carburetor. I am having some problems with backfiring through the carb. I am fairly new to working on carburetors. The guy I bought the truck from said that he thought the spacer needed to be machined because after a while it would develop a vacuum leak and start backfiring. I bought a new spacer and installed it along with new gaskets and a carburetor rebuild. Well, I started getting some backfire from the carburetor again... One thing I would like to ask: Is the solid surface (aside from the holes for the carb barrels) the top or is the side with the interconnected and exposed cavities showing the top? (Am I making any sense?) I just put it on the same way it was before, but some reason I find myself doubting...
Any sage like advice for a beginner like me? What can I try to get rid of the backfire?
Any sage like advice for a beginner like me? What can I try to get rid of the backfire?
to me it sounds like the dizzy has been put in 180 degress backwards
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Originally Posted by bshackelford711
to me it sounds like the dizzy has been put in 180 degress backwards
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One other thing I have noticed about the spacer is that on the couple of occasions I have flooded the carb, I have noticed gas seeping out from the bottom of the spacer. Maybe I should just get rid of the spacer altogether.
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Postmaster
Joined: Jul 2003
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From: iowa
are you missing a gasket? There should be a gasket under the carb spacer and another between the spacer and carb.
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Originally Posted by fordeverpower
are you missing a gasket? There should be a gasket under the carb spacer and another between the spacer and carb.