Need help with Diagnosing Hard Cold Start - Ford Powerstroke Diesel Forum
Please Visit our Site Sponsors is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
LinkBack Thread Tools Display Modes
Old 12-11-2006, 04:27 PM Rookie

Join Date: Dec 2006
Location: Colorado
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Need help with Diagnosing Hard Cold Start

I have a 2001 F250 w/ 7.3 Powerstroke. It's also a California truck, although I live in Colorado now. About 3 months ago, I had a new cam sensor installed by the dealer. About 2 months ago I installed a Quadzilla 4 bank chip (plugs into the computer) with the Commander and a 4 inch exhaust. About 1 month ago, I experienced the 1st cold start problem I've ever had.

When the water temp is below about 45 degrees, it won't fire. We've installed new batteries and a new glow plug module to no avail. Mechanic has checked the glow plug relay and the glow plugs and he says all are fine. If I plug it in, it starts right up. Problem is, I cannot plug it in at work, or when I'm on the road.

I removed the chip, but that did not help either.

All roads lead to the glow plug system, but cannot find anything wrong with it. Ideas? I'm about $550 into this so far with no answers.

Last edited by Jeff Baker; 12-11-2006 at 04:28 PM. Reason: spelling
Reply With Quote Quick reply to this message
Sponsored Links
Old 12-11-2006, 04:37 PM

Join Date: Jan 2006
Location: central coast, california
Posts: 0
Thanks: 0
Thanked 2 Times in 2 Posts
Feedback Score: 0 reviews
if fuel pressure is good....glow plug system is good.......then there are only two other reasons why it wouldnt start in a "real world" situation. There are all kinds of things like a biased ICP thats only biased cold and things like that that are possible....but the only good explanation that is common would be this...

Either your injector o rings are hardened and are not sealing properly cold....

Or your motor is down on compression and the rings dont seal well cold...

I would bet on...just based on my experience...its the injector o rings......But thats a "jugement call" for the tech on the newer 7.3's...there isnt a real good fool proof test for it....
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:
What state or province do you live in?
Security Question
*Required, this field is not shown to others. Enter the last two characters of the word "Powerstroke"
Security Question #2
*Required, this field is not shown to others. "While balancing on a piece of wood, two inches by four inches known as a 2x4, john and his friend sally both spotted a dalmatian inside a truck with sirens, headed to put out a fire. State the animal mentioned in the sentence above."
Please select your insurance company (Optional)


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 08:11 AM.

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.