Front tank starting problems

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May 21, 2017 | 10:15 PM

now_what

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Front tank starting problems

Hi guys, I have a 1996 Ford F250 7.5 V8 460 and I am having problems starting my truck on the front fuel tank. When I try to start it, it won't start even by pumping the gas peddle. But it starts right up when I have it switched on the back tank. I can start it on the back tank and then switch it over to the front tank and it runs great but it's just starting it when it's on the front tank. Any idea what it could be?
Thanks

May 28, 2017 | 12:54 AM

cbakker

Laughing Gas

Joined: Mar 2011

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From: West Central Southern MN

Have you checked your fuel pressure on the front tank vs the rear?

May 28, 2017 | 03:24 AM

now_what

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Cross-Country

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Thank you for replying, I have not compared the pressure. Once the truck is stared and running I can switch to the front tank and have no problems driving, it's just starting it on the front tank that is the problem. Would not having good pressure effect just starting the truck using the front tank?
Thanks again for the help and reply!

Jun 12, 2017 | 08:36 PM

cbakker

Laughing Gas

Joined: Mar 2011

Posts: 811

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From: West Central Southern MN

Not 100%sure but if the fdm is weak, it may give enough fuel to keep it running but not be able to supply enough volume and pressure.

Jul 22, 2017 | 11:57 PM

now_what

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Update

Ok now the truck stalls when the tank is switched over. I was on the interstate and wanted to switch tanks and as soon as I did the truck lost power and I stepped on the gas and it started to stall like there was no gas getting to the engine so I switched it back and the truck regained power and ran like normal. Any thoughts?

Jul 25, 2017 | 08:30 AM

cbakker

Laughing Gas

Joined: Mar 2011

Posts: 811

Likes: 1

From: West Central Southern MN

I'm gonna guess it is the fuel sender(pump). The fuel sender is part of the fuel delivery module. Guessing is not as reliable as testing the fuel pressure and checking codes to make sure.