Testing HPOP

Reply Subscribe

Thread Tools

Search this Thread

Jan 15, 2018 | 05:06 PM

Racecar_Dave

Thread Starter

Trailering

Joined: Dec 2017

Posts: 17

Likes: 0

Testing HPOP

I have an internal oil leak and ive re oringed my injectors and changed my oil. i only get 200 psi at the icp after the truck has warmed up. i was wanting to know how i can check to see if my HPOP is causing the problem

Jan 15, 2018 | 05:41 PM

Dan V

Lead Driver

Joined: Jun 2013

Posts: 5,647

Likes: 891

From: north of Minneapolis, MN

You should pose that question in the Diesel forum.

Jan 15, 2018 | 06:06 PM

Racecar_Dave

Thread Starter

Trailering

Joined: Dec 2017

Posts: 17

Likes: 0

Quote:

Originally Posted by Dan V

You should pose that question in the Diesel forum.

It says i am in the diesel forum

Jan 15, 2018 | 09:13 PM

Evan_P

Logistics Pro

Joined: Mar 2012

Posts: 3,507

Likes: 121

From: Oregon

What year and engine?

Jan 16, 2018 | 12:51 AM

azking_Ranch

Tuned

Joined: Aug 2010

Posts: 387

Likes: 0

From: Limestone County

I don't think the 6.7 has an HPOP (High Pressure Oil Pump) older diesel do.

Jan 16, 2018 | 07:35 AM

Tom

Super Moderator

Joined: Aug 2003

Posts: 25,479

Likes: 738

From: Isanti, MN

The OP's profile shows that he's working on an '01, so I'm moving this one to the 7.3L forum.

Jan 16, 2018 | 08:28 AM

Chevota_72

Tuned

Joined: Mar 2016

Posts: 354

Likes: 0

If you are indeed working on a 7.3 you can deadhead the pump with gauges in each line but first you need to make sure you have a good working IPR and associated wiring for the IPR. My bet would be on an injector, injector o-ring or IPR issue. Does the truck start and run until it gets hot? Have you pressured up the HPO rails with air to check for injector related issues?

Trending Topics

This is prolly a 1 page thread at most

110.1k

6.0M
Reliability of new 7.3L engine and idling

33

1.7k
It's time for a new accelerator pedal

23

526
Musical Gears with an E4OD

24

410
P0478 code no power

19

427

Jan 16, 2018 | 10:12 AM

Racecar_Dave

Thread Starter

Trailering

Joined: Dec 2017

Posts: 17

Likes: 0

Quote:

Originally Posted by Chevota_72

what size gauge threads into the pumps lines? 1/4"?

on the IPR note my ipr runs at 8-12% duty at idle and 50%, maxing out at 64%, when the truck wont build enough pressure for the injectors. I have not replaced the IPR or its pigtail but my understanding was that is was working normally.

I have found a broken o ring and have re oringed all 8 injectors and the truck idled much better but wouldnt restart once hot.

the truck sees 1500psi at the icp when cold and will run until it shuts off. truck will not restart until oil temperature has cooled to around 100* Im running motorcraft 15w40

i have not pressureized the oil rails, what is the procedure and what should i be looking for?