Mild rough start and slight lope at idle - Ford Powerstroke Diesel Forum
Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 10-01-2013, 09:55 AM
Chapter Director

 

Join Date: Aug 2012
Location: Davenport, IA
Posts: 2,890
Thanks: 4
Thanked 42 Times in 35 Posts
Feedback Score: 5 reviews
Mild rough start and slight lope at idle

Ever since i got my OBS its had a slight rough start and somewhat has a small lope at idle at all temps cold or warm engine no matter what. Well i did an e-fuel conversion and i thought that would have solved it but it didnt.

So next i replaced the GPR and still has a lope. Next would be testing GPs but considering it does it at any temp and whether or not if the motor is hot or cold im gonna almost say without a doubt its not but as soon as i get ahold of a multimeter ill test for sure

So next im thinking its my oil system but after talking with Kris he thinks my numbers are good

Heres my HPOP numbers at WOT(look at max value not current)


Heres my IPR duty cycle at interstate merging speed(again look at min and max values)


My HPOP is stock and truck is not tuned just a 6637. I have no problem at all with power its just at idle it has a slight lope, just enough to shake the truck more than it should. Also now that its a bit chillier in the mornings it seems like its a bit harder starting and it puffs a little white which could just be condensation but not sure.

I understand its an older truck but still dont think its quite right.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 10-03-2013, 07:15 PM
Chapter Director

 

Join Date: Aug 2012
Location: Davenport, IA
Posts: 2,890
Thanks: 4
Thanked 42 Times in 35 Posts
Feedback Score: 5 reviews
Bump guys any ideas?
Reply With Quote Quick reply to this message
  #3  
Old 10-03-2013, 07:39 PM
Compression Ignition Addict
 

Join Date: Oct 2011
Location: Chico, California
Posts: 3,493
Thanks: 17
Thanked 100 Times in 95 Posts
Feedback Score: 0 reviews
my truck feels the same when i run the crappy ford recall cps.
try getting a new cps and that might fix your rough idle.

one other thing that caused worse idle for me was a worn out fpr.

the brass poppet and orings in the fuel pressure relief were extremely worn out.

oh and lastly clean the ipr screen. that might help! the obs have a screen on the ipr that is often clogged.
Reply With Quote Quick reply to this message
  #4  
Old 10-03-2013, 07:43 PM
Chapter Director

 

Join Date: Aug 2012
Location: Davenport, IA
Posts: 2,890
Thanks: 4
Thanked 42 Times in 35 Posts
Feedback Score: 5 reviews
Quote:
Originally Posted by blue99stroker View Post
my truck feels the same when i run the crappy ford recall cps.
try getting a new cps and that might fix your rough idle.

one other thing that caused worse idle for me was a worn out fpr.

the brass poppet and orings in the fuel pressure relief were extremely worn out.

oh and lastly clean the ipr screen. that might help! the obs have a screen on the ipr that is often clogged.
I just got the upgraded dark blue one and i dont think it did anything.

I did and e-fuel conversion so no more stock fpr

Ipr is kinda the last thing i can honestly think it is how hard is it to get out ive never messed with it
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 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:
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 -8. The time now is 11:18 AM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

vB.Sponsors