HPOP leak? - power/mileage loss + more noise - Ford Powerstroke Diesel Forum
Please Visit our Site Sponsors
Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
LinkBack Thread Tools Display Modes
Old 12-21-2007, 09:58 AM
Powerstroke.org Rookie

Join Date: Sep 2007
Location: Coweta. OK
Posts: 22
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
HPOP leak? - power/mileage loss + more noise

Have read numerous posts on the HPOP leaks and I'm trying to determine why there seems to be some loss in power, decreased fuel mileage and helluva clattering racket from the engine at certain RPM load ranges. It's an '01 F250 7.3 with 130K miles and starts and runs perfect (other than a perceptible loss in power, economy and increased engine knocking/clattering noise). Its stone stock at this point and I have not tried to pull any codes - may take to dealer for that.


Since some of the possible HPOP leak symptoms similar to mine were mentioned in other posts, is there a definitive way to tell if the HPOP is leaking internally, i.e. by reading the oil pressure to the injectors and comparing to specified parameters? I have no external engine leaks at all and don't really want to do the o-ring change if it is not the cause of the reported symptoms.

Hope someone can provide some straight forward guidance here.

Reply With Quote Quick reply to this message
Sponsored Links
Old 12-21-2007, 10:28 AM

Join Date: Oct 2006
Location: Iva, SC
Posts: 5,877
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Have the codes checked and a cylinder contribution test done. The HPOP oil pressure can also be checked.
Reply With Quote Quick reply to this message
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -8. The time now is 09:58 PM.

Powered by vBulletin® Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.