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Old 08-07-2015, 11:37 AM   #1
MercRising
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Fuel Prob.....fuel just stops after 30+ minute drives!

A few times now the truck has just stopped, I'll pull over and look at the fuel filter pre-carb and there's nothing in it! The pump is still audibly running but no gas gets up to the carb. I'll sit there squeezing the rubber sections of line and hoping it's a clog or something I can knock loose but then, after several minutes...the pump will start getting gas up to the carb again and I'm off. It's happened multiple times in one trip if the trip is say 45+ minutes. It always starts back up and I get gas back at some point but crap, I could do without stalling out in traffic!!

This usually happens after 20-30+ minute drives and I'm wondering if the fuel pump is overheating? It's an external electric cheapy the prior owner put on but, it's only a year old.

Any thoughts?

I have a mechanical block pump to install but, haven't had time. Wonder if that would cure my ails??

Cheers y'all!

John
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Old 08-07-2015, 11:41 AM   #2
bigmac73
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Re: Fuel Prob.....fuel just stops after 30+ minute drives!

make sure your tank has a vented cap or remove yours and see if it still shuts down on you,
also there is a sock filter on the fuel pick up tube in the tank it might be rusted and collapsing, I always remove them as a precaution and just run a good inline filter

and yes it could be a crappy pump, I would try the cap first
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Old 08-07-2015, 09:13 PM   #3
ElKotze
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Re: Fuel Prob.....fuel just stops after 30+ minute drives!

Sounds to me like you have the wrong gas cap. You need one that's vented.
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Old 08-07-2015, 10:33 PM   #4
MercRising
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Re: Fuel Prob.....fuel just stops after 30+ minute drives!

I hope it's this simple!
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Old 08-07-2015, 11:45 PM   #5
74baggedbug
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Re: Fuel Prob.....fuel just stops after 30+ minute drives!

Also may be vapor lock.. Make sure none of the fuel lines are close to the manifolds
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Old 08-07-2015, 11:51 PM   #6
MercRising
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Re: Fuel Prob.....fuel just stops after 30+ minute drives!

Quote:
Originally Posted by 74baggedbug View Post
Also may be vapor lock.. Make sure none of the fuel lines are close to the manifolds
This is what my uncle thinks it could be. Or just a crap aftermarket electric pump that overheats after a while.
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