The Ford Barn

Ford coupe · 07-31-2012, 07:23 PM

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 · 08-01-2012, 02:43 AM

rebuild the carb! and should make a big difference

poweredbylincoln · 08-01-2012, 02:49 AM

also is it through the tailpipe or at the carb?

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

Ole Don · 08-01-2012, 07:14 AM

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 · 08-01-2012, 07:53 AM

It is through the tail pipe

Daves55Sedan · 08-01-2012, 09:00 PM

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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 · 08-01-2012, 09:05 PM

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.

07-31-2012, 07:23 PM	#1
Ford coupe Senior Member Join Date: May 2010 Location: Napanee ontario Canada Posts: 395	55 Back fires 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

08-01-2012, 02:43 AM	#2
poweredbylincoln Senior Member Join Date: Sep 2010 Posts: 1,696	Re: 55 Back fires rebuild the carb! and should make a big difference

08-01-2012, 02:49 AM	#3
poweredbylincoln Senior Member Join Date: Sep 2010 Posts: 1,696	Re: 55 Back fires also is it through the tailpipe or at the carb? and do u have a fuel filter? is it clogged?

08-01-2012, 07:14 AM	#4
Ole Don Senior Member Join Date: May 2010 Location: St. Michael, Minnesota Posts: 1,713	Re: 55 Back fires 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.

08-01-2012, 07:53 AM	#5
Ford coupe Senior Member Join Date: May 2010 Location: Napanee ontario Canada Posts: 395	Re: 55 Back fires It is through the tail pipe

08-01-2012, 09:00 PM	#6
Daves55Sedan Senior Member Join Date: May 2010 Location: Granite City, Illinois Posts: 3,008	Re: 55 Back fires Sponsored Links (Register now to hide all advertisements) 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.

08-01-2012, 09:05 PM	#7
Daves55Sedan Senior Member Join Date: May 2010 Location: Granite City, Illinois Posts: 3,008	Re: 55 Back fires 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.