The Ford Barn

flash9376 · 06-30-2012, 06:33 PM

Ive been having problems getting my A to idle smoothly. When idling, there is a slight backfire from the carburator, almost like its coughing. If I speed up the idle, it goes away but then the car idles way too fast. When I try to slow down the idling speed, I get the backfiring then it usually stalls out. I had it running smoothly a while ago, then it started stalling when I would come to stop while driving, then eventually all these problems ensued. Ive adjusted and re-adjusting everthing, took apart the carb, checked all the jets and valves and such and I re-timed the car several times as well. I cant seem to think of anything else to check. Ive read all the service bulletins, restorer guide, etc about adjusting the carb and timing and such. I cant seem to fix the problem, I feel like I'm missing something. Anyone have any suggestions? It drives find and accelerates well, just problems with idling.

p.s. Its a zenith carb

Mike · 06-30-2012, 06:55 PM

Sounds like it is running lean, take a look at the vacumn wiper hose. Check manifolds for leaks .

mike

flash9376 · 06-30-2012, 08:18 PM

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well, seems like the vacuum wiper WAS leaking, which is probably why it stopped working, and the manifold nuts were loose. It seems that a lot of the nuts have come loose since I got it on the road a few months ago, but the car is idling much, much better. Thanks.

06-30-2012, 06:33 PM	#1
flash9376 Member Join Date: Jun 2010 Posts: 35	Idle problems Ive been having problems getting my A to idle smoothly. When idling, there is a slight backfire from the carburator, almost like its coughing. If I speed up the idle, it goes away but then the car idles way too fast. When I try to slow down the idling speed, I get the backfiring then it usually stalls out. I had it running smoothly a while ago, then it started stalling when I would come to stop while driving, then eventually all these problems ensued. Ive adjusted and re-adjusting everthing, took apart the carb, checked all the jets and valves and such and I re-timed the car several times as well. I cant seem to think of anything else to check. Ive read all the service bulletins, restorer guide, etc about adjusting the carb and timing and such. I cant seem to fix the problem, I feel like I'm missing something. Anyone have any suggestions? It drives find and accelerates well, just problems with idling. p.s. Its a zenith carb

06-30-2012, 06:55 PM	#2
Mike Senior Member Join Date: May 2010 Location: ASTON, PA. Posts: 725	Re: Idle problems Sounds like it is running lean, take a look at the vacumn wiper hose. Check manifolds for leaks . mike

06-30-2012, 08:18 PM	#3
flash9376 Member Join Date: Jun 2010 Posts: 35	Re: Idle problems Sponsored Links (Register now to hide all advertisements) well, seems like the vacuum wiper WAS leaking, which is probably why it stopped working, and the manifold nuts were loose. It seems that a lot of the nuts have come loose since I got it on the road a few months ago, but the car is idling much, much better. Thanks.