A weak CP3? - Chevy and GMC Duramax Diesel Forum
Aftermarket Mods. Discuss what Mods are right for you.

DuramaxForum.com is the premier Chevy and GMC Duramax Diesel Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 10-25-2011, 12:40 PM   eBay Motors  #1 (permalink)
Junior Member
 
Join Date: Feb 2010
Location: Wisconsin
Posts: 31
A weak CP3?

Hey all, last week my truck took extra long to crank and start (no abnormal conditions) so me and a buddie did some data logging with efi live and found out I've got a low rail pressure issue, we have it programmed to make about 23'500 psi and Im only getting about 14'500 psi under full throttle, I have never swapped a CP3, any opinions would be appreciated, haven't done too much looking into it yet because my truck still drives, runs fine, just a loss of power at wot, any other ways to test and know for sure its the pump and not just a regulator, I read something somewhere a long time ago about a test gm does that you can do with efi live ramping up rail pressure to some magic 165 number or something (i dont remember exactly) to see if it holds or the pump is working properly. Let me know what you think.
__________________
2001 GMC 2500HD, 02 motor, 5 inch custom exhaust, custom intake, DiabloSport Predator, EFI live, 33' Fierce MT's, Glow shift gauges, touchscreen head unit with tv tuner, Spare wheels with studded tires (for fun on the ice).
18yroldDuramaxkid is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply


Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Chevy and GMC Duramax 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:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

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 -7. The time now is 04:25 PM.



Powered by vBulletin® Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Friendly URLs by vBSEO 3.6.1