Changed the oil this morning, fired up normally after, and shut down with nothing out of the ordinary. Two hours later, no start. ICP is only 200psi, DC goes to ~55%.


HPOP is and stays full. Pulled and cleaned IPR thinking it was likely stuck, did not find any debris, and same conditions after reinstall. Tried unplugging ICP, no help. Frustrating.


Have not pulled valve covers yet. Any ideas appreciated.

 

If IPR orings were fine(sounds like they were) then it may be an inj oring.
Man here lately there have been what seems like a lot of inj oring issues.

 

Other info:


No oil leaking in or through ICP sensor.
No oil in the fuel canister.
Found some soot and looks like a hole in the EBP tube.


Pulled codes, P1661, P1280, and P0344. No idea how long they have been there. Cleared codes, cranked once again and got P1111.

 

Yes WTS comes on. No CEL.


Changed CPS. No change, still have only P1111.


200psi and 55% cranking.

 

You have a hpo problem. Time to go fish. Either pull valve covers and look at the basses of the injectors while cranking.or get a plug for the hpo lines and block one side then the other and see which side brings the pressure back up.

 

My WAG is the hpop ate it.. even with some bad injector o-rings, they will usually build enough HPO to start. Mine started and ran with 7 bad internal mid body o-rings leaking oil into the fuel side and 1 bad external middle o-ring pushing oil into the fuel. Ran horrible, but it ran.

 

Plug both hpo lines and it would confirm it^

There was a guy a few weeks ago that had an upper ring go and it would shoot across his shop lol
And not start. !?!? Haha either way its broke

 

Thanks for the input so far. What type and size are the HPO fittings? As in, what do I need for plugs?


I was thinking I'd pull the HPOP drive gear cover and see if it's still bolted tight.


HPOP is my original 15 degree case that Joey put 17 degree guts in maybe 6 or so years ago. It's had a problem once before, but it still ran. After Joey fixed it that time I've had no issues since.


I pushed it into the barn and blew the grit off the top of the motor but haven't started yet.

 

I want to say its -6jic 99% sure anyway

 

The IPR plug was getting soft and the insulation on the wires was getting gooey. I replaced the pigtail end but that didn't help. I did plug my test light into the pigtail and it lights up with key on and got much brighter when cranking, so I'm pretty confident that the IPR is getting the signal. Tomorrow I'll see about putting a mechanical guage setup together.


Dumb question time, if the IPR itself is bad, stuck open, etc., will that leak be small enough that the pump still ought to make plenty of pressure with the lines plugged? In other words, do I need a good IPR in order to assess the pump health or will that be obvious even if the IPR is hosed?

 

If the IPR was stuck open, it should drain the HPOP rez while sitting.

 

I plugged one HPO line and put a guage on the other and barely made enough pressure to move the needle on my mechanical guage, about 200psi again.



So at this point it seems as though the pump has kicked the bucket.


Now, do I send it back to Joey to see if it's fixable, or call it used up and go for an Adrenaline or T500?

My biggest fear is how did it die, and did it send a bunch of debris into my heads and injectors.

 

I would send it to joey. At least you could get feedback on what happened.

 

Yeah, call joey and have him upgrade it to a T500 while he has it.

 

Joey thinks it's an IPR problem. As much as I find it hard to believe an IPR can pass the full pump volume without building more than 200psi, I hate to pull the HPOP and send it out when I don't know for sure, so I gave in and ordered an IPR from Guzzle.