HPOP questions.
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Junior User
Joined: Nov 2003
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From: Beaverlodge, Alberta
HPOP questions.
I'm trying to figure out if my HPOP is weak. My truck starts good when its cold and runs good as long as you don't shut it off. Once the engine is warm the truck won't start. I put a pressure gauge on the cylinder head today and got these readings. When first started and at idle the pressure was at 1200psi. That pressure dropped to about 700psi at a idle warm. When trying to start warm the pressure was at only 200-250psi. Are these numbers right? The warm pressures seam low to me and make me wonder if the HPOP is gone.
Post Fiend
Joined: Apr 2004
Posts: 12,835
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From: Silver Lake Dunes, MI
yes those pressure are low but not cause you HPOP is shot. Its much easier and cheaper than that. More than likely your IPR o-rings are bad. For $40 you can get a new set and replace them in under an hour. also could be injector o-ring or injector issue but 95% its the IPR o-rings
Post Fiend
Joined: Apr 2004
Posts: 12,835
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From: Silver Lake Dunes, MI
IPR O-Ring Kit (for when IPR valve replacement is not required)
(Ford) F6TZ-9C977-AN (F6TZ-9C977-AA?)
(International) 1825806C92 (1825806C91?)
procedure
http://cw-diesel.com/LuxSite/IPRInfo.htm
(Ford) F6TZ-9C977-AN (F6TZ-9C977-AA?)
(International) 1825806C92 (1825806C91?)
procedure
http://cw-diesel.com/LuxSite/IPRInfo.htm
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Junior User
Joined: Nov 2003
Posts: 79
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From: Beaverlodge, Alberta
Finally got some time to work on the truck this week. I pulled the IPR and sure enough the two small o-rings on the end of the IPR were dried out and there were chunks of them missing. I cleaned it up like the link that was posted showed to and put it back together. Truck starts fine now. Thanks for all the help. The best part is with my company's discount at International the o-ring kit came to $20 bucks.
Thanks,
David.
Thanks,
David.
Senior User
Joined: May 2005
Posts: 157
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From: shiloh, kentucky
I too changed my HPOP right after purchasing my truck. Same symtoms, hard start after it was warm. I knew very very little about our powerstroke engines so I carried it to the stealership. They told me the pump was bad, cavitating, causing the oil to foam, which resulted in the hard warm starts. I did not have them change it, did it myself, which did cure the problem. But, the pump came with a new IPR and seals.
Now I am thinking ........... u know
Them Stealership *****ers
Now I am thinking ........... u know
Them Stealership *****ers
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