Diesel Bombers - 2001 losing power with small load

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Jrebyank

02-11-2015 09:13 PM

2001 losing power with small load

I'm new to the forum and new to cummins. My truck just feels weak. I was pulling about 7500lbs the other day and was not impressed. Almost couldn't pull 40 mph up a medium incline. My truck is 4x4 w 355 gears with an auto. Also working that hard I figured to be black smoking pretty bad but none. I do have a triple dog programmer set at 25% 3 1/2 straight exhaust.

Jrebyank

02-15-2015 07:57 AM

Checked fuel pressure yesterday. 5 psi at idle drops to nearly 11/2 at wot. Lift pump time huh?

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