no acceleration and loss of power on low fuel?

[cjw0120]

just recently bought an 04 6.0 with 160k miles on it. whenever im running with about an 1/8 of a tank the truck has no acceleration, no increase in rpm's followed by loss of power and then it falls on its face and dies. hard to start after the issue too. once i restart it it runs fine for a while then it happens again. pulled the codes and had to replace my egr valve. also getting 2 glow plug codes which i have to replace but i cant seem to figure it out.

[jesilvas]

You're sucking in air. I bet your fuel pickup tube/foot/assemble is cracked.

[mazsecond]

Sounds like a fuel pressure issue, a very common problem with the 6.0 especially with low fuel. You should defiantly do the "blue spring" mod. Also called the Fuel Pressure Regulator upgrade. You can find many posts on here about how to do it. Be very careful that you don't keep running the truck so low on fuel because you will start grenadeing injectors, your FICM and apparently your glow plugs are suffering from the hard starts after the truck shuts off.

Also don't ever run the truck out of fuel because you will for sure kill off a few injectors, that goes for pretty much any diesel. Also consider using a fuel additive/cetane booster, they help considerably.


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[mazsecond]

Originally Posted by jesilvas

You're sucking in air. I bet your fuel pickup tube/foot/assemble is cracked.

Also a possibility but I would check fuel pressure before anything. And the FPR upgrade is a must either way. Let us know what you find.


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[cjw0120]

i have been looking into the blue spring mod recently and i think im deffinetlly gonna do that. my mechanic checked fuel pressure and it checked out fine. is it an easy diy project or is it more in depth? thanks for the help by the way some guys on here have been giving me grief about starting new threads and asking for help???

[mazsecond]

No problem man. Some guys on here you will find to be a little ****y but most of us are pretty cool and try our best to help you out. The blue spring is a fairly easy job. Just have to remove the intake and cold side CAC tube, makes it so much easier to swap in the new spring.

If its not FP than it could very well be a fuel pickup issue as stated above. Guess you'll have to drop the tank to find out


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[jesilvas]

The reason for starting new threads is because when you post your own issue in someone else's thread, it's kinda rude.
Now, if you do it with some input to their issue, or have the same issue, it's not as bad. But when it's off kilter to the conversation, it doesn't make sense to even do it.

Does the truck have issues with 1/2 tank or more of fuel?

You could just pull the bed.
Look in Jarrod B's 6.0 mod thread. He had this issue and replaced his pickup foot and bypass thing.

[cjw0120]

thanks i think ill be doing the blue spring this week and see if tat helps and no issue on half tank or more just on about an 1/8 of a tank