hpop to much pressure????? - Diesel Forum

eddie5394 · 10-28-2009, 06:53 PM

What is the hpop pressure supose to be. Whe I hooked up the scan tool yesterday i noticed that it was at about 1000 psi at idl. when I reved it up it jumped to 4 to 5000 psi. tje ipr was at 11% at idl. I did not have any codes but I noticed that my truck misses above 2100 rpm and blows smoke until about 2600 rpm then clears up. I replaced the plug on the back of the head in thre oil galley but it started leaking again I think that the hpop might be building to much pressure. I am going to clean and install new orings on the ipr next week. dose this sound possible?????

**action4478** · 10-28-2009, 07:17 PM

It sounds like the edge filter is plugged or the HPOP is having problems . You didn't mention the year of the truck

eddie5394 · 10-29-2009, 04:57 AM

1997 f250 completley stock for now. if it was getting plugged would the computer pick it up and try to compensate by poening the ipr more. what pressure should it be running

eddie5394 · 10-29-2009, 04:58 AM

ia thier any way to service the hpop filter

Nit · 10-29-2009, 10:33 AM

Your by-pass valve should be dumping off before 4000psi, put a real gauge on it to confirm , 11% is a good number. It si chipped or do you have a 10k mod etc?

**DIESELSITE** · 10-29-2009, 11:09 AM

Quote:

Originally Posted by eddie5394

What is the hpop pressure supose to be. Whe I hooked up the scan tool yesterday i noticed that it was at about 1000 psi at idl. when I reved it up it jumped to 4 to 5000 psi. tje ipr was at 11% at idl. I did not have any codes but I noticed that my truck misses above 2100 rpm and blows smoke until about 2600 rpm then clears up. I replaced the plug on the back of the head in thre oil galley but it started leaking again I think that the hpop might be building to much pressure. I am going to clean and install new orings on the ipr next week. dose this sound possible?????

I suspect the ICP sensor. There is no way you had 5000 psi. There is a presssure relief in the pump that limits it to about 3800-4000. There is no "filter" to service. The edge filter is not a "filter" like a screen or oil filter. It's a flow diversion device that may catch a large chunk of debris that might clog the IPR quickly, but it's not likely something that would be in the pump anyway. Small debris that you would expect a filter to catch would go right past the edge filter. You can see what they look like here https://www.dieselsite.com/pdffiles/...structions.pdf

Unplug the sensor and see if the misses go away. If so, replace the sensor.

Bob

**action4478** · 10-29-2009, 11:15 AM

My next Question was going to be IPRDC% at those high pressures , I figured the ICP reading was false ...

eddie5394 · 10-30-2009, 12:05 AM

I was just thinking that something was wrong because it keeps blowing the oil galley plug on the pass siide. I thought that the pressure should be running lower than what it is.

**action4478** · 10-30-2009, 08:59 AM

Like Nit said , may want to check it with a gauge to verify the pressure ..