55 Back fires

[Ford coupe]

The 55 i just got recently seems to back fire when going down grade or when pushing again compression..Not very loud but quite often..Also has a hesitation when stepping onit as they say..Standard transmission..Would it be slow in time?carbproblems?Help me barners...Harry

 

[poweredbylincoln]

rebuild the carb! and should make a big difference

 

[poweredbylincoln]

also is it through the tailpipe or at the carb?

and do u have a fuel filter? is it clogged?

 

[Ole Don]

Very slight backfireing through the exhaust when backing down is normal from high RPMs. It may mean a slight rich condition, which if not overdone, would be a good thing. Slight hesitaion may be adjusted with accelerator pump adjustmant. Blame both on crappy gas. If you buy a carb rebuild kit, try to get one with a leather accelerator pump. They can be reconsituted year after year with a few drops of motor oil worked in with your fingers.

 

[Ford coupe]

It is through the tail pipe

 

[Daves55Sedan]

My 55 has been backfiring for several years, but only when you let off the gas on the highway. My valves are adjusted perfectly and she runs smooth as can be. I believe the backfiring on mine could be because I had to weld on new pieces of exhaust pipe ahead of the glass-paks some while back and the weld might not be continuous all around, thus allowing for introduction of outside air.

 

[Daves55Sedan]

BTW, it wouldn't make a difference whether your transmission was standard or Ford-O-Matic. But it might make a difference if you had a modern automatic. Letting off the gas by itself doesn't seem to have the effect of the engine compression slowing down the rear wheels with a modern automatic.