460 stalling
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Cargo Master
Joined: Apr 2001
Posts: 2,364
Likes: 3
From: Eustis FL
460 stalling
When I let the truck warm up, it will just up and stall like it's getting no fuel or spark... Just dies instantly!
I have the truck parked on a slight incline on my driveway... Could this be the dreaded float syndrome, known to many 4350 Autolite carbs?
Or, is it maybe my electronic ignition?
I just converted to the bigger distributor cap with new rotor, wires.
It didn't seem to cure it. It can run just fine sometimes, then has a bad day. Should I try a junkyard ignition module? (Duraspark) The original might be kaput???
Mark
Ford started it; Ford will finish it!
I have the truck parked on a slight incline on my driveway... Could this be the dreaded float syndrome, known to many 4350 Autolite carbs?
Or, is it maybe my electronic ignition?
I just converted to the bigger distributor cap with new rotor, wires.
It didn't seem to cure it. It can run just fine sometimes, then has a bad day. Should I try a junkyard ignition module? (Duraspark) The original might be kaput???
Mark
Ford started it; Ford will finish it!
Posting Guru
Joined: Jul 2001
Posts: 1,613
Likes: 2
From: Gainesville, FL
460 stalling
Tri,
Just change your fuel filter. Mine does the same thing. The vehicle runs rich when it's cold. It sucks itself dry because the filter is clogging.
KingFisher
P.S. The vehicle will start up on the first try after stalling. The residual pressure bleeds through and refills the carb. Maybe.
Just change your fuel filter. Mine does the same thing. The vehicle runs rich when it's cold. It sucks itself dry because the filter is clogging.
KingFisher
P.S. The vehicle will start up on the first try after stalling. The residual pressure bleeds through and refills the carb. Maybe.
Thread Starter
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Cargo Master
Joined: Apr 2001
Posts: 2,364
Likes: 3
From: Eustis FL
460 stalling
Actually, i have both filters replaced brand new...
I noticed today it ran good for a while, then started dying again... when warm... sound like ignition module to you?
i have to try the truck on level ground next...
mark
Ford started it; Ford will finish it!
I noticed today it ran good for a while, then started dying again... when warm... sound like ignition module to you?
i have to try the truck on level ground next...
mark
Ford started it; Ford will finish it!
Thread Starter
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Cargo Master
Joined: Apr 2001
Posts: 2,364
Likes: 3
From: Eustis FL
460 stalling
I guess I will grab one of those, too, from the junkyard... Unless I get it first and try before the ignition module???
Mark
Ford started it; Ford will finish it!
Mark
Ford started it; Ford will finish it!
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Posting Legend
Joined: Sep 2001
Posts: 30,255
Likes: 37
460 stalling
Many intermittant electronic problems can be located by using a hairdryer. Heat up a suspected module a little and see if your problem presents itself. Don't get the module too hot and cook it!
The Duraspark module was known for having heat problems (Like the TFI). The aftermarket units are much worse than the OEM modules. There is a Ford TSB that advises the use of a 1/4" spacer on all of the bolts under the module in order to provide cooling air under the module.
This is not generally the time of year that problems arise. Was your truck idleing for a long period with the hood down on a warm day?
The Duraspark module was known for having heat problems (Like the TFI). The aftermarket units are much worse than the OEM modules. There is a Ford TSB that advises the use of a 1/4" spacer on all of the bolts under the module in order to provide cooling air under the module.
This is not generally the time of year that problems arise. Was your truck idleing for a long period with the hood down on a warm day?
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Cargo Master
Joined: Apr 2001
Posts: 2,364
Likes: 3
From: Eustis FL
460 stalling
No sir, not idling long at all... Actually, the module itself felt cool to the touch...
Should I suspect the distributor, maybe?
Or maybe it's back to the carb???
Gosh, I wish I could tell if it's electrical or fuel related!
Carb is rebuilt, brand new fuel pump. Hasn't been on the road since these were done. (problem existed before carb and fuel pump work).]
Should I try a new coil, maybe?
Mark
Ford started it; Ford will finish it!
Should I suspect the distributor, maybe?
Or maybe it's back to the carb???
Gosh, I wish I could tell if it's electrical or fuel related!
Carb is rebuilt, brand new fuel pump. Hasn't been on the road since these were done. (problem existed before carb and fuel pump work).]
Should I try a new coil, maybe?
Mark
Ford started it; Ford will finish it!
Posting Legend
Joined: Sep 2001
Posts: 30,255
Likes: 37
460 stalling
A fuel problem with a carb will usually not just suddenly die. It will sputter and sometimes even speed up slightly just before it dies. If you say it is dying instantly I would suspect electrics. The main suspect in ignition systems for an intermittant problem is the module. Many parts stores have testing machines that can test those modules, call around and see if you can find one. If you don't have access to a tester just bite the bullet and buy a module. If your problem is not the module you will have a spare for when it does fail:-) I always carry a spare in my truck/van and have used it twice.
Module failures can be internal thermal failures that will not even warm the modules.
The other piece that can cause a sudden failure is the pickup in the distributor. Sometimes it is due to a worn or shorted wire in the pickup. This can occur when the vacuum advance moves.
Module failures can be internal thermal failures that will not even warm the modules.
The other piece that can cause a sudden failure is the pickup in the distributor. Sometimes it is due to a worn or shorted wire in the pickup. This can occur when the vacuum advance moves.
Thread Starter
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Cargo Master
Joined: Apr 2001
Posts: 2,364
Likes: 3
From: Eustis FL
460 stalling
Thanks for the help! It started snowing again here last night (it's May, for Pete's sake!) so I will try the things you mentioned as soon as I can get under the hood. No room in my garage with the Supercab!
I will keep ya posted!
Mark
Ford started it; Ford will finish it!
I will keep ya posted!
Mark
Ford started it; Ford will finish it!
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