'82 truck fuel problems
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New User
Joined: Sep 2004
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From: Houston,
'82 truck fuel problems
I have a 1982 f-150 with a 351 and it runs fine- until it gets hot.
after I start it and run it several times, it will cut out and not start again. The engine will turn over, but there is no fuel getting to the carburetor. I can't see anything flowing through my in-line filter. I can't tell what's going on! It's a dual tank truck, and they are pretty beat up underneath, but it works fine until it's hot. Can anyone help me fix it?
after I start it and run it several times, it will cut out and not start again. The engine will turn over, but there is no fuel getting to the carburetor. I can't see anything flowing through my in-line filter. I can't tell what's going on! It's a dual tank truck, and they are pretty beat up underneath, but it works fine until it's hot. Can anyone help me fix it?
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New User
Joined: Sep 2004
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From: Houston,
Well I'm not sure what vapor lock is, but the line and exhaust are on opposite sides of the truck. The only place it could be getting too hot is there by the engine and in the pump on the side of the engine.
btw- thanks for responding so quick.
btw- thanks for responding so quick.
Elder User
Joined: Aug 2004
Posts: 585
Likes: 2
From: Willis, Texas
its a plugging of the fuel line due to heat, causes a slug of vapor/air to form, making a blockage...can't get no fuel past it.
is the fuel line anywhere near the emissions or egr system? Any of those metal tubes coming off the manifold will deffinately do the trick.
DB
is the fuel line anywhere near the emissions or egr system? Any of those metal tubes coming off the manifold will deffinately do the trick.
DB
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New User
Joined: Sep 2004
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From: Houston,
Well, I bought a new fuel pump for it, havn't installed it yet, but I don't think that's the problem. Just figured it wouldn't hurt. But about the vapor lock in case the pump doesn't fix it, I can't tell where in the line it is too close to a source of heat. It has to run near the engine block to the pump and carb. but I don't know what would be causing a vapor lock. How would I fix it if it is a vapor lock?
Freshman User
Joined: Aug 2004
Posts: 33
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From: Georgia
Fuel Starvation
It would be unlikely that if the engine is running it would quit do to vapor lock because the fuel comming from the tank would be much cooler. If you shut down the engine the fuel can boil in the line that is a different mater. Do you have a engine driven or electric intank pump? If engine driven replace it. Also replace Carb Filter. If electric that is another can of worms. Let me know and I will cover it...... Larry
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Freshman User
Joined: Apr 2005
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same problem
It sounds like I have the same problem and same year
My truck will run fine for days then when it is warm - just quits
I prime the carb and starts -- so I let it cool a bit and prime it a gain
then I wont have problems for a bit. I check and no gas after the pump
but before the filter
I play with the fuel switch but not sure on that.
I am thinking vacuum or possibly some in the tank that heats up
I have a mechanical pump.
Hope this clarrify a few things
any more suggestions by anyone
email krash51218@yahoo.com
My truck will run fine for days then when it is warm - just quits
I prime the carb and starts -- so I let it cool a bit and prime it a gain
then I wont have problems for a bit. I check and no gas after the pump
but before the filter
I play with the fuel switch but not sure on that.
I am thinking vacuum or possibly some in the tank that heats up
I have a mechanical pump.
Hope this clarrify a few things
any more suggestions by anyone
email krash51218@yahoo.com
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Freshman User
Joined: Apr 2005
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possible solution
I stop by my local parts store -- I was missing one gas cap on a tank
He is thinking that a bad gas cap could creator a vapor lock
I will believe it when it take care of it. I will change my pump next
Let me know if that fixes your problem
Tim thanks for the welcome but that had nothing to do with this problem
If you have any ideas respond
He is thinking that a bad gas cap could creator a vapor lock
I will believe it when it take care of it. I will change my pump next
Let me know if that fixes your problem
Tim thanks for the welcome but that had nothing to do with this problem
If you have any ideas respond
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Joined: Apr 2005
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other checks
either kinked vent hose or tank switch
gas cap thing did not work but helped a bit
Here was another entry for a similiar problem:
My 86 was doing something similiar. It wouldn't take any gas and would splash back on me if I tried to put any in it. It ended up being the vent tube was kinked and wasn't venting out. I didn't have the problem of it spitting at me when taking the cap off though. Hope that helps
valve selector switch is stuck open and building up pressure from the other tank, I bet it does it when the engine is hot or when the temp is hot outside, thats what mine was doing
Krash
gas cap thing did not work but helped a bit
Here was another entry for a similiar problem:
My 86 was doing something similiar. It wouldn't take any gas and would splash back on me if I tried to put any in it. It ended up being the vent tube was kinked and wasn't venting out. I didn't have the problem of it spitting at me when taking the cap off though. Hope that helps
valve selector switch is stuck open and building up pressure from the other tank, I bet it does it when the engine is hot or when the temp is hot outside, thats what mine was doing
Krash
New User
Joined: May 2004
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Hey, had a similar problem on my 78 f150. turned out that previous owner had tank off, and he didnt hook all the lines back like they needed to be. gas tank was vapor locking, and it would kill the engine,same symptoms.sometimes could take cap off and hear air suck back in. Hope this helps ya some.
Junior User
Joined: Apr 2004
Posts: 70
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From: Wyanet, Ill.
lookin' at your inline filter is not the way to see if you got fuel. take off the air cleaner, look inside the carb, and push the lever attached to the acellerator cable. look for a stream of fuel out of the jets. if it dies when hot, it's probably electrical prob, most likely the coil.
Freshman User
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fuel problems
Bill I think we both (jpmiller( established that there was no fuel coming into the
carburator. I primed the carb and truck start fine -- so that almost eliminates
electrical.
I have bypass my selecter switch with an electric fuel pump as an adapter
and backup I have not had to use it yet.
Krash
carburator. I primed the carb and truck start fine -- so that almost eliminates
electrical.
I have bypass my selecter switch with an electric fuel pump as an adapter
and backup I have not had to use it yet.
Krash
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