No start, dead IPR maybe.......

[strokin_early_99]

I have a no start situation. IRP at 65% and ICP at 150-160psi while cranking. I have pulled the injectors and replaced the O rings so they are good. I am thinking it is an IPR issue. I have pulled the stealth pumps and blocked off the front IPR so it will not have to be removed again to diagnose a dead IPR. The shaft is fine, not broken. The pumps turn smoothly without any weird feelings or noises.



Is there such a way to bench test an IPR?



Is putting new O rings on an IPR the same as getting a new IPR?



Is there anything I can do to take the IPR apart and clean it?



If I throw an new IPR on the sucker and it will not start, what else could it be?





Thanks,

Howard



(Multiple listed)

[sldghamr]

have you replaced your Cam position sensor (CPS)? there is a recall at the Ford dealer on that part.

[Action Rick]

Have you tried starting it with the ICP connector unplugged ?..

IPR O ring is a cheap test ,,a new one will have new orings on it

Cleaning the IPR here

Ignore the pic of the pipe wrench on the threads ,,it goes on the small barrel...

[Marty]

Howard, I'll try to find my phone... lost it in my drunken madness lol


you can "check" the IPR, but usually it's a lot better off to replace it.

I knew if your truck wouldn't start it seemed odd to only be an injector O ring.

[strokin_early_99]

CPS was swapped with a known good one in my tool box just for kicks and giggles to no avail.

A new IPR will be here today.

Rick, Thanks for the link, that is cool. I will tear down my other two to see if I can find anything in them.

[strokin_early_99]

It was the IPR. The truck is running.......




































On 7 cylinders.......................
Cylinder #1 is dead. It will not hold compression and there is enough crank case pressure to blow the filler cap out of my hand. DAMN!!!!!