No start when hot. - PowerStrokeNation : Ford Powerstroke Diesel Forum
 3Likes
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 16 (permalink) Old 07-25-2017, 06:34 AM Thread Starter
Freak of Nature
 
Coopons's Avatar
 
Join Date: Dec 2016
Posts: 47
Garage
No start when hot.

Won't start when hot. Changed injector o'rings on all 8 cylinders. About 4 sets were toast. Also changed vcg and harness. Fires right up when cold but won't restart when hot. Let it cool down and she fires back up. Any ideas?
Coopons is offline  
Sponsored Links
Advertisement
 
post #2 of 16 (permalink) Old 07-25-2017, 01:58 PM
PSN Veteran
 
410customs's Avatar
 
Join Date: Aug 2016
Location: Idaho panhandle
Posts: 3,354
Re: No start when hot.

CPS and IPR are suspect as well as weak or leaky high pressure oil system
Any check engine light?
Coopons likes this.

1997 CCFB 7.3, ZF5, 4x4, 4.10, baby swamps, TS6, E99 spyder, RiffRaff pipes, 6.0 FMIC, RSK, 315 toyo at
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

2001 Excursion 7.3, auto, 4x4, 3.73, 6" Suspension lift, 37" Dick Cepeks
2000 E350 7.3, auto 2wd, 3.73, planning a TTB 4x4 conversion
21.9 liter family
410customs is offline  
post #3 of 16 (permalink) Old 07-25-2017, 03:07 PM
PSN Veteran
 
79jasper's Avatar
 
Join Date: Mar 2012
Location: Skiatook Oklahoma
Posts: 3,675
Re: No start when hot.

Cps usually doesn't cause hot start issues, but it is still a electrical component. Lol
My money would be ipr. Notorious for no hot start. Try pouring cool water on the solenoid when it won't start.

Sent from my SAMSUNG-SM-G890A using Tapatalk
Coopons likes this.

1979 chevy c30 dually, sm465, 373's? Converted to 6.2 diesel, pump turned up and advanced a hair.(wrecked)
1994 ford F350 dually 4X4: 7.3 powerstroke, 5 speed. 6637, straight pipe into dual stacks. Cooper discoverer at/3's.
2010 Jetta TDI 40 or so mpg :flippa:
79jasper is offline  
 
post #4 of 16 (permalink) Old 07-25-2017, 03:57 PM Thread Starter
Freak of Nature
 
Coopons's Avatar
 
Join Date: Dec 2016
Posts: 47
Garage
Re: No start when hot.

Quote:
Originally Posted by 410customs View Post
CPS and IPR are suspect as well as weak or leaky high pressure oil system
Any check engine light?
When the problem first happened, i had just driven about 250km, i stopped to top up my fuel. it was a really hot day, no start after filling up. my first thought was cps. Like all good powerstroke owners i had a brand new one in the glove box. replaced it and she fired right back up. I figured the problem was solved. i arrived at my destination another 300km. truck was parked for about a week. Left there and drove about 200km stopped for coffee, no start. let it kool down for 20mins it restarted but it was a struggle to start. lots of cranking. when its running it runs awesome. No CEL.

1996 F350 ccsb
Dana 60 swap
3" DP 4" straight pipe
6637 air filter
Adrenaline HPOP
Explorer overhead console
SD 120v IDM
Super duty Lariat seats
315/75R16
Coopons is offline  
post #5 of 16 (permalink) Old 07-25-2017, 04:00 PM Thread Starter
Freak of Nature
 
Coopons's Avatar
 
Join Date: Dec 2016
Posts: 47
Garage
Re: No start when hot.

Is there any way to check the IPR? I'm not at home so my tools are very limited. Jasper I'll take it for a drive and see if the cool water will work. Very fustrating as this truck has never given me any trouble.

1996 F350 ccsb
Dana 60 swap
3" DP 4" straight pipe
6637 air filter
Adrenaline HPOP
Explorer overhead console
SD 120v IDM
Super duty Lariat seats
315/75R16
Coopons is offline  
post #6 of 16 (permalink) Old 07-25-2017, 04:20 PM Thread Starter
Freak of Nature
 
Coopons's Avatar
 
Join Date: Dec 2016
Posts: 47
Garage
Re: No start when hot.

another quick question. What should my RPM's be when cranking? And i noticed it doesn't build oil pressure on the gauge when its hot.

1996 F350 ccsb
Dana 60 swap
3" DP 4" straight pipe
6637 air filter
Adrenaline HPOP
Explorer overhead console
SD 120v IDM
Super duty Lariat seats
315/75R16
Coopons is offline  
post #7 of 16 (permalink) Old 07-25-2017, 04:53 PM
PSN Veteran
 
79jasper's Avatar
 
Join Date: Mar 2012
Location: Skiatook Oklahoma
Posts: 3,675
Re: No start when hot.

You can check the resistance of the ipr solenoid. Cold vs hot.
I can't remember the exact ohm value for "good."
The oil pressure gauge on these trucks is a joke. It's actually a oil pressure switch. 7psi and it makes the gauge move.

Sent from my SAMSUNG-SM-G890A using Tapatalk
Coopons likes this.

1979 chevy c30 dually, sm465, 373's? Converted to 6.2 diesel, pump turned up and advanced a hair.(wrecked)
1994 ford F350 dually 4X4: 7.3 powerstroke, 5 speed. 6637, straight pipe into dual stacks. Cooper discoverer at/3's.
2010 Jetta TDI 40 or so mpg :flippa:
79jasper is offline  
post #8 of 16 (permalink) Old 07-25-2017, 05:00 PM Thread Starter
Freak of Nature
 
Coopons's Avatar
 
Join Date: Dec 2016
Posts: 47
Garage
Re: No start when hot.

Jasper, just got back from a drive and tried the cool water trick. No dice. I just talked to a friend of mine, he's a heavy duty diesel mechanic, he's going to bring home his computer from work. Hopefully that can narrow it down. Thanks for all the advice. Its just crazy that the truck runs so well.

1996 F350 ccsb
Dana 60 swap
3" DP 4" straight pipe
6637 air filter
Adrenaline HPOP
Explorer overhead console
SD 120v IDM
Super duty Lariat seats
315/75R16
Coopons is offline  
post #9 of 16 (permalink) Old 07-25-2017, 05:25 PM
PSN Veteran
 
79jasper's Avatar
 
Join Date: Mar 2012
Location: Skiatook Oklahoma
Posts: 3,675
Re: No start when hot.

That should help a lot.

Sent from my SAMSUNG-SM-G890A using Tapatalk

1979 chevy c30 dually, sm465, 373's? Converted to 6.2 diesel, pump turned up and advanced a hair.(wrecked)
1994 ford F350 dually 4X4: 7.3 powerstroke, 5 speed. 6637, straight pipe into dual stacks. Cooper discoverer at/3's.
2010 Jetta TDI 40 or so mpg :flippa:
79jasper is offline  
post #10 of 16 (permalink) Old 07-26-2017, 04:31 PM
PSN Veteran
 
Join Date: Aug 2008
Location: Madison, WI
Posts: 5,373
Re: No start when hot.

Quote:
Originally Posted by Coopons View Post
And i noticed it doesn't build oil pressure on the gauge when its hot.
Quote:
Originally Posted by 79jasper View Post
The oil pressure gauge on these trucks is a joke. It's actually a oil pressure switch. 7psi and it makes the gauge move.
True, but it should still register while cranking, cold or hot. If indeed it's not responding at all when hot, that seems to point to the problem. Oil is low, or old/thin, or lube oil pump is not providing sufficient pressure when hot.
madpogue is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the PowerStrokeNation : 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










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