i have a 96 f250 with a 93 cummins swapped in and when I give it full throttle and hits full boost it bogs down. any ideas of what it could be?

 

Do u have a tach? If u do what are your RPMs at when it does this? I would guess maybe your maxed out on RPMs and the governor is defueling it maybe someone else might have some other ideas.

 

no tach. it jus recently started doing it. so im not for sure on what could be causing it. it runs good until I give it full throttle then when it gets to about 15 psi it starts bogging like maybe its getting to much fuel. im so lost

 

Does the engine "sputter" or does the engine get throaty?

 

yea it sputters but when I let off it runs fine

 

You need to put a fuel pressure gauge on it, see what you're getting at WOT. Sounds like a lift pump to me.

 

ok ill look into that. is it difficult to change the lift pump? im new to the cummins motor so not sure on a lot things yet.

 

Sounds like a dirty fuel filter or low fuel pressure at WOT!Thats my .02 cents

 

ok thanks for all the input. ill check my filter then ill let ya know if its better

 

Ok sounds good!