hello

the other night when i came to a stop and took off again it started missing Then had a dead pedal and would keep running for a while after i turned the key off..
felt like out of fuel so i put a new lift pump filter and getting plenty of fuel to the injection pump but none out of the ofv when i turn it over while it is loose
any ideas
thanks
ken

 

First, make sure your fuel shutoff lever is fully in the up position.

 

did that and yes its up

 

Ok, next test will be to have a quart or so of cold water with you, and when it starts messing up, dump the cold water on the P7100 Injection pump and see if it settles down.

They did have some issues with 1994 and 1995 pumps where the barrels weren't right.

It is currently running, right?

 

No not running burnt the starter out tryin to get it primed bought a new one it was bad out of the box taken it out no will try again soon

 

K, in the future, use the black priming button on the lift pump to establish prime, much easier than changing starters ( cheaper too ).

Just a FYI, rebuilds on the starters usually are a crap shoot, I go to NAPA and get their brand new starters, good luck so far.

 

i gave up took it to left coast diesel here in ca see what they say

 

Whats the verdict, Ken2040?

Patdaly, tell us more about the problems with 94 +95 pumps.

Don't want to hijack, just want to keep the discussion going, I am interested in this problem.

 

My info comes from the oldsters here, Infidel principally, I wasn't around when they were more of a problem.

Evidently for the 94 and 95 model years, there were some out of round problems with the P7100 pumps.

I think I have seen it probably 2 or 3 times in my almost decade here.

 

When hot some of the P7100 pistons will warp, not all of them. It is a problem with the OEM units. Putting cold water on the pump brings the temp down and the problem eases up as the pistons cool.

 

No news yet left coast still has it ts been 3 days now simpelest motor in the **** world but a shop cant figure it out ....... I know there is no fuel coming out of the p7100 but i cant get it primed this was a drop in motor i bought ...startin to get to me

 

Dont get frustrated over not being able to figure out a problem on the simplest motor in the world. simple it may be but the p7100 is a bit more complex than the motor itself so if the problem does lie there it may not actually be so easy. and p pumps arent something you throw at a problem. theyre kinda pricey even for the dinosaur they are. You said it kept running after you turned off the key....about how long did it keep running and was it spit n sputtering? from what you describe it sounds like there is a good chance youll be buying a new pump

 

Hello
It kept running for probally 30 sec to a minute there was no throttle responce..... i dont remember if it was spitting and sputtering..dont think it was.
I have it at a shop now there doing test just like i did. I still think its a pump airlock ... its a new motor thats doing this now.. if the core charge wasent 2200i would keep it and tear the old motor down