Where to check next - 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 07-22-2012, 03:21 PM
Powerstroke.org Rookie
 

Join Date: May 2012
Posts: 25
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Where to check next

Here's what I have going on with my 97 F-250 4x4 with the 7.3 auto tranny. Its also stock as far as I know. About 218000 miles

The truck runs fine when cold. The truck starts ok when cold. It does blow white smoke and has a top fuel idle when is first starts. I can wait it or rev it up and it idles fine. Power is good when cold.

Once it warms up its a different story. It shakes, at idle when in gear, when backing up you can see the bed shaking. It can barely get out of its own way until the turbo spools up and the turbo lag is much more noticeable and seems longer. Also its a PITA to start when hot. Most times I have to put my foot down while cranking to get it to start and it takes a lot of cranking. It tries to start but just a little sputter.

I took it to a shop to get it checked out. They seem to "need" to get the injectors out first thing (because it costs $1500 I'm sure) but I think there can be other things checked first.

So far I have replace the glow plug relay, the shop said I had high resistance on the old one. I have changed the valve cover gaskets and harnesses including the pig tails and replaced the glow plugs. I have done two oil changes to "flush out" the bad oil as the shop suggested. And the fuel filter is new.

I don't want to pull the injectors until I have ruled out everything else. Any idea's and help would be great and thank you in advance. I want to get my truck running right before I start making it run better.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 07-22-2012, 08:20 PM
Compression Ignition Addict
 

Join Date: Oct 2011
Location: Tehachapi, CA
Posts: 1,800
Thanks: 0
Thanked 40 Times in 40 Posts
Feedback Score: 0 reviews
I would probably run it (when warm) with the valvecovers off and look for oil leakage around the base of the injectors. You may be getting High Pressure Oil System presuure bleed off from that. You can also check the Injection Pressure Regulator (IPR o-rings and see if they're bad (although if you're going to remove it to check them, you might as well replace them ... only about $30). You might have them check the Engine Oil Temperature (EOT) sensor for accuracy too. Cheers!
Reply With Quote Quick reply to this message
  #3  
Old 07-23-2012, 05:49 AM
Powerstroke.org Rookie
 

Join Date: May 2012
Posts: 25
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by Patrick Feeley View Post
I would probably run it (when warm) with the valvecovers off and look for oil leakage around the base of the injectors. You may be getting High Pressure Oil System presuure bleed off from that. You can also check the Injection Pressure Regulator (IPR o-rings and see if they're bad (although if you're going to remove it to check them, you might as well replace them ... only about $30). You might have them check the Engine Oil Temperature (EOT) sensor for accuracy too. Cheers!
Great info thanks. I have been circling around the IPR for a while but I didn't know about the rebuild, I think for $30 I should just do it anyway. Also the EOT sounds like a good thing to test too. If these things check out fine and the engine still runs rough I guess its time for injector seals. I will take the injectors down for testing too.
Reply With Quote Quick reply to this message
  #4  
Old 07-29-2012, 07:58 PM
Powerstroke.org Rookie
 

Join Date: May 2012
Posts: 25
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Ordered the seal kit for the IPR. I'll let you know what happens when I install it.
Reply With Quote Quick reply to this message
  #5  
Old 08-04-2012, 02:27 PM
Powerstroke.org Rookie
 

Join Date: May 2012
Posts: 25
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
FIXED!!

I rebuild the IPR today.

I got it out and apart and didn't loose anything. The components were all in good shape and felt like they should so I added the new O rings and put it back together.

The idle is so smooooth now. The truck had more pep and even sounds better.

That's why I want to do all the work myself. Took it to a shop and they had me chasing my tail and the FIRST thing they wanted to do was yank the injectors.

Would have been a $30 fix had I started here first. So I bought a lunch and a little rum and now I will wash my truck, and sit outside in the sun and pat myself on the back

Thanks all

Last edited by GreMonte; 08-04-2012 at 02:32 PM.
Reply With Quote Quick reply to this message
  #6  
Old 08-04-2012, 05:34 PM
Powerstroke.org Fanatic
 

Join Date: Dec 2011
Location: Bentonville, AR
Posts: 107
Thanks: 1
Thanked 2 Times in 2 Posts
Feedback Score: 0 reviews
Glad to hear you got it fixed. Nothing like something running like it's supposed to! And, you fixed it yourself.... even better!
Reply With Quote Quick reply to this message
  #7  
Old 08-10-2012, 09:50 PM
Powerstroke.org Rookie
 

Join Date: May 2012
Posts: 25
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
So my victory seems to be short lived. The truck has returned to its old ways. Very hard to start when warm, shakes at intersections( I little less but not much) and that top fuel idle for the first 3 seconds after starting.

So.... what next? Replace IRP completely? Injector seals? HPOP?

I guess I'm done throwing cheap parts at it and now it time for some expensive ones. I really want to do some upgrades like stack exhaust and a chip but not until it runs right.. errrrr
Reply With Quote Quick reply to this message
  #8  
Old 10-06-2012, 06:11 PM
Powerstroke.org Rookie
 

Join Date: May 2012
Posts: 25
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Pulled the injectors and installed new seals (OEM) also built a DIY Napa gold intake.

Still have a rough idle when warm and a really bad idle when first starting when warm. Tach jumping, lights dimming, truck rocking, top fuel idle.

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 07:03 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