351W Stalls when hot
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351W Stalls when hot
1987 Bronco, 351W with carburetor. When it is very hot outside, around 90-100 degrees, and the truck is sitting in traffic it will start to miss (or feels like it). This gets worse and worse until when you push the gas to go the truck will stall, and is hard or impossible to restart. You have to push the pedal all the way to the floor when cranking to get it to start again.
When I checked the fuel bowls, they do not appear to be going dry. The truck has factory ignition, and the factory EGR plante that sits under the carb, like a spacer. Has anyone else had a similar problem? Could the fuel in the carburetor be boiling and flooding the engine?
I was thinking of blocking off the exhaust heat crossover to see if that would help.
When I checked the fuel bowls, they do not appear to be going dry. The truck has factory ignition, and the factory EGR plante that sits under the carb, like a spacer. Has anyone else had a similar problem? Could the fuel in the carburetor be boiling and flooding the engine?
I was thinking of blocking off the exhaust heat crossover to see if that would help.
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Joined: Jan 2004
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From: Troy,NY
I'd make it stall out where you can pull a sparkplug easily and take a look at it. See if your getting fuel or not.
If your running a durspark iginition they usually show the first sign of going bad by not working when the module gets hot.
If your running a durspark iginition they usually show the first sign of going bad by not working when the module gets hot.
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Made it happen again today. My home-made O2 sensor says it is going lean right before it stalls. I checked a few of the plugs, most has liquid gas on them.
Also, it restarts right away if you hold the pedal to the floor while cranking it. Then it runs fine, at least for a few minutes.
Also, it restarts right away if you hold the pedal to the floor while cranking it. Then it runs fine, at least for a few minutes.
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Larry O
It may be an ignition problem, the next time it does it see if you are getting spark to the spark plugs. If not the two things I would check is the ignition module (It should be on the fender and make sure you look at the color of the grommet as it should be either blue, red, green or brown and you have to make sure to replace it with one the same color) and the other one is the pick-up coil in the distributor.
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