02 hard start when warm - 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 05-31-2011, 09:01 PM
Emergency Services

 

Join Date: May 2010
Location: Valley Center, KS
Posts: 1,914
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
02 hard start when warm

Alright so my truck has the basic mods, intake, exhaust, cales tunes, srp1, gauges, etc.

For about the last 7k miles I have been getting a weird issue that my truck is hard to start when its warmed up. It will turn over just fine but doesn't seem to catch for a while.

It has a new icp about 20k ago, no oil in it. Fuel pump is good, got a new one in the truck but this is the second pump I've had on it in two days, same issue. Problem happens with stock tuning and stock hpop as well as with cales tunes and the srp1. I have a new ipr core from diesel site that I put on with the srp1 and the ipr solenoid ohmed out just fine, I put a known good one on from a wrecked truck we have, no change.

Batteries are new as of yesterday morning. I'm stumped...anyone have any ideas?

Video
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 06-01-2011, 04:14 PM
Emergency Services

 

Join Date: May 2010
Location: Valley Center, KS
Posts: 1,914
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Bump.... .
Reply With Quote Quick reply to this message
  #3  
Old 06-01-2011, 04:30 PM
Compression Ignition Addict
 

Join Date: Dec 2007
Posts: 2,859
Thanks: 6
Thanked 1 Time in 1 Post
Feedback Score: 2 reviews
Injctor O ings?
is the reservoir full when you try to start it? I assume it is but thats good to know.

Last edited by melmount; 06-01-2011 at 04:42 PM.
Reply With Quote Quick reply to this message
  #4  
Old 06-01-2011, 04:56 PM
Powerstroke Techie

 

Join Date: May 2011
Location: Frederick MD.
Posts: 1,965
Thanks: 0
Thanked 7 Times in 7 Posts
Feedback Score: 0 reviews
I would agree with injector o-rings. You really need a scan tool to moniter ICP pressures when it's doing this. What can happen is the upper o-ring on the injectors can start to eat away. When you're cranking it the high pressure oil will bleed out thru the o-ring and dump back thru the heads. It's probably a small leak at this time and it just takes awhile cranking for it to build ICP pressure. After it's running the high pressure oil system can overcome this leak for now. The reason it gets worse when warmed up is the oil thins out and pushes out even more.

It will probably get worse and worse though and might even blow out completely causing a no run issue.

Other possibilities would be a biased ICP sensor but I would think you would be having issues cold or warm with that.

Best thing to do is get someone to moniter ICP pressures and verify that's the problem.
Reply With Quote Quick reply to this message
  #5  
Old 06-01-2011, 05:01 PM
Compression Ignition Addict
 

Join Date: Feb 2011
Location: upstate ny
Posts: 2,254
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 7 reviews
Do you have anyway to monitor ICP while cranking? Sounds like either injector o-rings, or a failing hpop.
Reply With Quote Quick reply to this message
  #6  
Old 06-01-2011, 05:47 PM
Emergency Services

 

Join Date: May 2010
Location: Valley Center, KS
Posts: 1,914
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by melmount View Post
Injctor O ings?
is the reservoir full when you try to start it? I assume it is but thats good to know.
Resi is about an inch from the top, just checked it when cold. This was from the sensor hole not the inspection hole, the plug was seized on.
Quote:
Originally Posted by justinmix View Post
I would agree with injector o-rings. You really need a scan tool to moniter ICP pressures when it's doing this. What can happen is the upper o-ring on the injectors can start to eat away. When you're cranking it the high pressure oil will bleed out thru the o-ring and dump back thru the heads. It's probably a small leak at this time and it just takes awhile cranking for it to build ICP pressure. After it's running the high pressure oil system can overcome this leak for now. The reason it gets worse when warmed up is the oil thins out and pushes out even more.

It will probably get worse and worse though and might even blow out completely causing a no run issue.

Other possibilities would be a biased ICP sensor but I would think you would be having issues cold or warm with that.

Best thing to do is get someone to moniter ICP pressures and verify that's the problem.
Ok, I'm getting it on a scanner on Friday, I'll take a video of ICP and IPR and put it on here.
Quote:
Originally Posted by dazdillenger View Post
Do you have anyway to monitor ICP while cranking? Sounds like either injector o-rings, or a failing hpop.
I will have access to a snapon scanner come Friday. I would bet orings since they have 260k+ on them. HPOP is a SRP1 with around 500 miles on 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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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 06:08 PM.


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