Motor Turns over but doesnt start. - Ford Powerstroke Diesel Forum
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 29 Old 03-09-2010, 07:09 PM Thread Starter
Powerstroke.org Fanatic
 
Fireman Crawler's Avatar
 
Join Date: Oct 2009
Location: Ga
Posts: 118
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Motor Turns over but doesnt start.

I bought an 01 7.3 F-250 Crewcab 4x4. Motor has 195,000 on it. The previous owner told me that it quit coming home from work and would not crank. He had it towed to his house and let it sit for about a year. I contacted the delearship to get some info on it. They told me that they told him to quit driving it because it had bad compression on cylinders 4, 6, and 8. Well he didnt.

I have checked the oil and it looks good. Checked the fuel filter looks great. It will turn over all day long but never get fire. I have checked the fuses and they are great also.

I guess my question is what could cause these three cylinders to have poor compression and shouldnt it still run but just be like crap?
Fireman Crawler is offline  
post #2 of 29 Old 03-10-2010, 06:11 AM
Compression Ignition Addict
 
Join Date: Dec 2009
Location: Montgomery, TX
Posts: 539
Thanks: 0
Thanked 1 Time in 1 Post
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Yes - it will run on just four cylinders - something that happens frequently when the under valve cover harness gets loose on one side. You need a few things to start. Properly timed fuel delivery, sufficient RPM to fire the injectors, and heat (generated from compression / glow plug system)

Does your wait to start light come on? Are you getting any smoke from the tailpipe when it cranks?

This motor uses the high pressure oil pump (HPOP) to generate the force to activate the injectors. The HPOP uses a signal from the Injection control pressure (ICP) sensor on the front of the driver's side head to determine pressure, which is controlled by the Injection pressure regulator (IPR) - any of these going bad will cause a no start. Read here for more:

http://www.forddoctorsdts.com/public...3HPOPGuide.pdf

The cam position sensor (CPS) frequently goes bad in these trucks. Most people carry a spare. They are about 25 bucks and would be a cheap first try at getting it to start.

Check your glow plug system as well. The tests are free. Read here:

Hard/No Start? Check here first. - Diesel Forum - TheDieselStop.com


I think the best investment you can make at this point would be to purchase a good scanner - AutoEnginuity with the Ford Package - which will monitor all the parameters needed to start and run. It could save you hundreds of dollars as opposed to just guessing and throwing parts at it.

While you are waiting for that to come, I would plug the truck in for a few hours(the cord is on the driver's side of where your front license plate is) and try to start it jumped with good cables to a strong batteried vehicle. You have to have at least 150 cranking RPM to fire the truck. You won't get that with marginal batteries.
dray8165 is offline  
post #3 of 29 Old 03-10-2010, 12:54 PM Thread Starter
Powerstroke.org Fanatic
 
Fireman Crawler's Avatar
 
Join Date: Oct 2009
Location: Ga
Posts: 118
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
The wait to start light does come on. It will stay on a couple of seconds and then turn off. It will not crank what so ever and doesnt smoke when turning over.
Fireman Crawler is offline  
post #4 of 29 Old 03-10-2010, 12:55 PM Thread Starter
Powerstroke.org Fanatic
 
Fireman Crawler's Avatar
 
Join Date: Oct 2009
Location: Ga
Posts: 118
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
I will check the suggestions you recommended on Saturday. Hopefully this can be something simple.
Fireman Crawler is offline  
post #5 of 29 Old 03-10-2010, 02:46 PM
Compression Ignition Addict
 
Join Date: Dec 2009
Location: Montgomery, TX
Posts: 539
Thanks: 0
Thanked 1 Time in 1 Post
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
No smoke means its not getting fuel. It should puff out white smoke. In addition to everything I suggested, do the obvious thing of making sure there is fuel in the filter assembly.
dray8165 is offline  
post #6 of 29 Old 03-10-2010, 03:42 PM Thread Starter
Powerstroke.org Fanatic
 
Fireman Crawler's Avatar
 
Join Date: Oct 2009
Location: Ga
Posts: 118
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
There is fuel in it. I checked it before I tried to start it. That's why I thought it may not be firing.
Fireman Crawler is offline  
post #7 of 29 Old 03-13-2010, 09:37 AM Thread Starter
Powerstroke.org Fanatic
 
Fireman Crawler's Avatar
 
Join Date: Oct 2009
Location: Ga
Posts: 118
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Ok I did the Glow Plug Relay Test. It is reading 11.5 volts. Bouncing between 11 and 12. This appears to be good.
Fireman Crawler is offline  
post #8 of 29 Old 03-13-2010, 11:24 AM Thread Starter
Powerstroke.org Fanatic
 
Fireman Crawler's Avatar
 
Join Date: Oct 2009
Location: Ga
Posts: 118
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Also what is this? It comes on for about a minute when I cut the key on. It sounds like a mini air compressor. It will shut off then come back on for about 30 seconds, then shutting off again.

Fireman Crawler is offline  
post #9 of 29 Old 03-13-2010, 11:44 AM
Premium Member


 
dalton1's Avatar
 
Join Date: Sep 2008
Location: North Berwick
Posts: 1,829
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Quote:
Originally Posted by Fireman Crawler View Post
Also what is this? It comes on for about a minute when I cut the key on. It sounds like a mini air compressor. It will shut off then come back on for about 30 seconds, then shutting off again.
vacuum pump

03 F-250 Lariat Crew Cab SB 6.0L Auto 4x4
5" exhaust, AFE intake, Blue spring mod, EGR Delete, 58v FICM, Warren 175/75 injectors, Powermax Turbo,
ARP Head Studs, Coolant filter, Innovative tunes


Pine Tree Powerstroke Association Director
pm me for chapter info


dalton1 is offline  
post #10 of 29 Old 03-13-2010, 12:14 PM Thread Starter
Powerstroke.org Fanatic
 
Fireman Crawler's Avatar
 
Join Date: Oct 2009
Location: Ga
Posts: 118
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Checked the glow plugs they are all in range.
Fireman Crawler is offline  
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:
OR

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
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



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

 
For the best viewing experience please update your browser to Google Chrome