Engine Stalling Problem
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Joined: Apr 2006
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Engine Stalling Problem
I recently bought a '64 F-100, and am having a hard time getting it to run properly. The PO had a 5.0 engine put in, and the manual transmission converted to automatic. A new 2bbl Holley carb, and new headers have been recently installed. After installation of the new carb, I began experiencing stalling at stop signs/signals when the truck was in gear. In park, or neutral, it would idle just fine. The mechanic who installed the new headers set the timing, reconnected the vacuum hose, and told me that the vacuum was weak, but that he could find no leaks. For about a week after I got the truck back, the problem seemed to be resolved. It idled rough at stops, but did not stall. However, if I had the headlights on, it would stall as before. Now, the original problem has returned. If anyone could point me in the next direction to take to isolate this problem, and suggest possible solutions, I would greatly appreciate it. Thanks...
Senior User
Joined: Feb 2006
Posts: 235
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From: Albany, Oregon
First off WELCOME to a great site for just what you are looking for. There are some people here that probably know more about these trucks than the people who designed them. I am sure they will be responding soon. I personally have a I6 in a 66 F100 and the float in the carb has been the culpret twice but that was with an Autolite 1 barrel. The V8 big boys will be sounding off soon. Again Welcome..........
Junior User
Joined: Jun 2005
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From: Friendswood, Texas
It ran fine before putting on the new 2 barrel holley ??
What was on it before ??
When it is idling in park, try slowly closing the choke and see if the engine rpm increases.
Does your truck have electronic ignition ??
Also, if it was close to stalling maybe turning on the lights caused the alternator to load down the engine enough to stall it ??
Regards.
Richard.
What was on it before ??
When it is idling in park, try slowly closing the choke and see if the engine rpm increases.
Does your truck have electronic ignition ??
Also, if it was close to stalling maybe turning on the lights caused the alternator to load down the engine enough to stall it ??
Regards.
Richard.
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Thanks much for your replies.
I was experiencing the same problems prior to installing the new carb. The prior carb was a rebuilt Holley that was a mishmash of non-Holley parts, and was shot.
It does have electronic choke and ignition, although the guy who installed the carb for me suggested that I install a better ignition system, as it is fairly old.
I traced the wires around in there to see if maybe something had become disconnected during the header installation process, and found that one of the alternator wires had come loose, which I fixed. It didn't solve the light/stall problem, but it does seem less severe.
I turned up the idle slightly, which helped, but I'd rather not crank that up to the point where I have to stand on the brake with both feet to keep from climbing up the trunk of the car ahead of me at the stop.
Thanks again for any help...
I was experiencing the same problems prior to installing the new carb. The prior carb was a rebuilt Holley that was a mishmash of non-Holley parts, and was shot.
It does have electronic choke and ignition, although the guy who installed the carb for me suggested that I install a better ignition system, as it is fairly old.
I traced the wires around in there to see if maybe something had become disconnected during the header installation process, and found that one of the alternator wires had come loose, which I fixed. It didn't solve the light/stall problem, but it does seem less severe.
I turned up the idle slightly, which helped, but I'd rather not crank that up to the point where I have to stand on the brake with both feet to keep from climbing up the trunk of the car ahead of me at the stop.
Thanks again for any help...
Posting Guru
Joined: Jul 2003
Posts: 2,232
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From: Colville, Washington
Just what is the idle vacuum?? Weak is a relative term, so some numbers would help. If you know nothing about the 5.0 engine and components, I would check the initial timing and try increasing it. The motor might have a larger than stock cam which would require more initial timing. Or there might be a vacuum leak that the mech. did not find. Do you have power brakes?? What automatic transmission is installed?
Postmaster
Joined: Dec 2003
Posts: 4,423
Likes: 8
From: Clarksville,Tn
Well; I'm late as alway's posting and stuff; but for what its worth, I had a similiar problem right after building my 65 truck, engine and all. Mine would die every time you put it into gear, if not reving up the engine, I try a mid stall converter, thinking it was cause by my mild cam, no difference, I even burned up a electronic ingintion, from this problem; then as me and my mechanic where trouble shooting the whole deal, I realize how much of a dummy I was, I replace every compontent on my engine during the
rebuild except the coil, I wasn't carrying enough juice to keep it runnnig. Since adding a accel super coil, no problem.
I know this is alittle different than your problem, but maybe a solution.
Mitch
rebuild except the coil, I wasn't carrying enough juice to keep it runnnig. Since adding a accel super coil, no problem.
I know this is alittle different than your problem, but maybe a solution.
Mitch
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