2000 6.0L runs rough and stumbles

[fxdxharley]

Originally Posted by clinebarger

Im guessing no check engine light? Like posted before the MAF can go bad and not set a light. EGR valve stuck part way open, Vacuum leaks, TPS sensor with a dead spot. If you do have bosch plugs throw them away there junk. Ive always ran NGK V-power plugs there cheap and a good plug never had a problem.

have you checked fuel pressure? Key on engine off 55-62 PSI.

Nope no check light. I've unpluged both the maf and tps and ran it to see if there was a difference none noticed. i do have the bosh platums. How can i check to see if the egr valve is stuck? Never check feul pressure. I hope its good, the pump is only 2 yrs old.