1994.5 - 1997 7.3L Power Stroke Diesel  

7.3 wont start

Thread Tools
 
Search this Thread
 
  #1  
Old 09-16-2013, 04:37 PM
bobbyt89's Avatar
bobbyt89
bobbyt89 is offline
Senior User
Thread Starter
Join Date: Oct 2009
Posts: 109
Likes: 0
Received 1 Like on 1 Post
7.3 wont start

so my trucks been down for over a year now and i'm determined to fix it now.
i had my truck at my dads sitting for 6 to 8 months decided i was going to drive it went out there started it up and it idled for like 15 mins and died i tried to restart it and nothing.
i replaced the cam position sensor still nothing
took it to ford they said it was the idm
brought it home swapped the idm and nothing
put a post up on here and someone said to check oil pressure i did and got nothing
replaced the lpop
i still cant get any sort or oil pressure any ideas/ help would be great thanks
 
  #2  
Old 09-16-2013, 04:49 PM
madpogue's Avatar
madpogue
madpogue is offline
Lead Driver
Join Date: Oct 2003
Location: Madison, WI
Posts: 8,472
Received 14 Likes on 14 Posts
"Nothing" doesn't tell us much.

* Is it cranking?
* Does the WTS light come on?
* Does the tach move while cranking (if it's cranking)?
* Any white smoke (if it's cranking)?
 
  #3  
Old 09-16-2013, 07:53 PM
bobbyt89's Avatar
bobbyt89
bobbyt89 is offline
Senior User
Thread Starter
Join Date: Oct 2009
Posts: 109
Likes: 0
Received 1 Like on 1 Post
no white smoke ever
cranks like crazy brand new starter and group 31s
wait to start light comes on and shuts off as should

all things lead to oil pressure issue i have a gauge taped into rite above the oil filter and theres no pressure
 
  #4  
Old 09-16-2013, 08:08 PM
Hussler's Avatar
Hussler
Hussler is offline
Postmaster

Join Date: Sep 2007
Location: Medford Oregon
Posts: 4,195
Likes: 0
Received 4 Likes on 3 Posts
What year?
 
  #5  
Old 09-16-2013, 08:16 PM
bobbyt89's Avatar
bobbyt89
bobbyt89 is offline
Senior User
Thread Starter
Join Date: Oct 2009
Posts: 109
Likes: 0
Received 1 Like on 1 Post
its a 1996
 
  #6  
Old 09-16-2013, 09:00 PM
Hussler's Avatar
Hussler
Hussler is offline
Postmaster

Join Date: Sep 2007
Location: Medford Oregon
Posts: 4,195
Likes: 0
Received 4 Likes on 3 Posts
Is the HPOP <!--[if gte mso 9]><xml> <o:OfficeDocumentSettings> <o:AllowPNG/> </o:OfficeDocumentSettings> </xml><![endif]-->Reservoir full or empty?
Dos the oil pressure register on the dash gauge while cranking?
 
  #7  
Old 09-16-2013, 09:10 PM
bobbyt89's Avatar
bobbyt89
bobbyt89 is offline
Senior User
Thread Starter
Join Date: Oct 2009
Posts: 109
Likes: 0
Received 1 Like on 1 Post
empty as far as i know when i pulled it off before it was 1/4 ful maybe nothing on the dash but the dash never worked
 
  #8  
Old 09-16-2013, 09:13 PM
bobbyt89's Avatar
bobbyt89
bobbyt89 is offline
Senior User
Thread Starter
Join Date: Oct 2009
Posts: 109
Likes: 0
Received 1 Like on 1 Post
oil pressure never registured at idle
 
  #9  
Old 09-16-2013, 10:25 PM
lindstromjd's Avatar
lindstromjd
lindstromjd is offline
Elder User
Join Date: Sep 2013
Location: West Des Moines, IA
Posts: 594
Likes: 0
Received 1 Like on 1 Post
Originally Posted by bobbyt89
empty as far as i know when i pulled it off before it was 1/4 ful maybe nothing on the dash but the dash never worked
If you have no oil in your HPOP, you can crank all day long and all you'll do is burn up your starter and batteries.

Take the plug out of the driver's side on the top of the HPOP reservoir, and use a small funnel and fill it up to within 1/2" of the top with new oil. Crank the engine a few times. Repeat as necessary. The LPOP will prime once the engine starts. And the engine can't run without LPOP pressure to feed the HPOP, so you won't be doing any damage to it.
 
  #10  
Old 09-16-2013, 10:27 PM
lindstromjd's Avatar
lindstromjd
lindstromjd is offline
Elder User
Join Date: Sep 2013
Location: West Des Moines, IA
Posts: 594
Likes: 0
Received 1 Like on 1 Post
And the dash oil pressure "gauge" isn't worth a crap for anything. It's just a switch; it opens up at around 8 psi, and whatever it shows after that is just wherever the gauge decides to sit. It's a glorified idiot light.
 
  #11  
Old 09-17-2013, 11:11 AM
bobbyt89's Avatar
bobbyt89
bobbyt89 is offline
Senior User
Thread Starter
Join Date: Oct 2009
Posts: 109
Likes: 0
Received 1 Like on 1 Post
I filled 5 or 6 times and same thing
 
  #12  
Old 09-17-2013, 12:31 PM
lindstromjd's Avatar
lindstromjd
lindstromjd is offline
Elder User
Join Date: Sep 2013
Location: West Des Moines, IA
Posts: 594
Likes: 0
Received 1 Like on 1 Post
Originally Posted by bobbyt89
I filled 5 or 6 times and same thing
It keeps draining out? That means your LPOP isn't primed.
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Hardlanding
1994.5 - 1997 7.3L Power Stroke Diesel
5
04-13-2017 09:10 AM
dumptruck denny
1994.5 - 1997 7.3L Power Stroke Diesel
60
02-14-2015 06:53 AM
SpeedyBolt
1994.5 - 1997 7.3L Power Stroke Diesel
3
02-06-2015 10:11 PM
roodet1
1994.5 - 1997 7.3L Power Stroke Diesel
9
01-06-2010 10:02 AM
cappyd892
1999 - 2003 7.3L Power Stroke Diesel
26
06-28-2009 10:09 PM



Quick Reply: 7.3 wont start



All times are GMT -5. The time now is 12:07 PM.