6.0l Fuel Pump Problems

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Jul 17, 2005 | 01:34 PM

jimcockrell

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6.0l Fuel Pump Problems

I own a 2004 6.0l F-250. I love the truck, but about a month ago it guit running. I was accelerating from a dead stop and the engine shut down just as if I shut it off with the key. It had no noises or sputtering before it died. It was towed to the dealership were it has been for the last month. They have told me that the fuel pump locked up. They put on a new fuel pump and the truck ran for a few minutes and quit again. They said that the fuel pump locked up again. This sounds strange and wondering how the fuel pump can lock up. Can any of you Ford guys help me out in figuring out the problem. Thanks!

Last edited by jimcockrell; Jul 17, 2005 at 01:35 PM. Reason: Spelling

Jul 17, 2005 | 01:53 PM

kw5413

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Joined: Apr 2004

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From: Great State of Texas

Wow...this is a new one.

Welcome to FTE.

We have some very talented Ford techs here that hopefully will jump in. It is Sunday afternoon however and they may not appear til tomorrow.

It would be nice if you can supply the engine build date if possible but, even the truck build date would help.

How many miles on the vehicle?

Do you feel confident that you have been purchasing quality fuels?

Do you ever use fuel additives? If so, how often?

Any power programmers or other mods?

Good luck.

Jul 19, 2005 | 04:16 PM

jimcockrell

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I talked with the mechanic today and it is not the fuel pump they are having trouble with it is the high pressure oil pump. They say it is not producing enough pressure to run the injectors. They are going to try again to replace the pump. Is there any pressure regulation on this engine that may be bleeding off to soon resulting in low pressure?

Jul 19, 2005 | 04:30 PM

International Tech

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From: West Columbia, SC

We are seeing issues w/ either the case to head tube o-rings popping or the branch tubes cracking at the high pressure pump. Both of those issues will cause a no start situation and a low ICP reading. There are several tests the tech can run to determine which issue he has. Hope its just the case to head tube o-ring. The branch tube is a PITA and requires disassembly of the rear of the engine to access.

Jul 19, 2005 | 08:58 PM

jimcockrell

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I will pass the information along. Thanks!

Jul 30, 2005 | 06:47 PM

jimcockrell

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I got the truck back running fine. They said they replaced the high pressure oil pump and it started right up. So this would be the third high pressure oil pump on this truck. I am running Amsoil Synthetic in this truck. Do I need to go back to conventional oil?

Aug 2, 2005 | 07:50 PM

Beachbumcook

Got Diesel?

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Quote:

Originally Posted by jimcockrell

Hard to say...

Has your oil level stayed at or near full all the time (especially when it dies)? The fail safe I was told for these motrs is that if you loose oil for any reason the injectors can't fire... and hence no damage to your truck.

Is your truck burning oil some way. Has your injectors allowed for diesel fuel to seep into the oil system and diluted the oil... which will ruin the oil pump and turbo? Did you or they take an oil sample and see if the oil has been diluted with diesel? All of these are possibilities... or it could just be the oil pump.... but you said it is the third one.... which leads me to believe that something else is the cause!!!!

I donot use Amsoil, just make sure that it is diesel rated and carries the CI4 or CI4+ rating which these motors require - no matter how good the oil is or the marketing.

Good luck,

Jeff