92 F350 7.3 Starting problems - Diesel Forum - TheDieselStop.com
Ford Diesel Forum / Powerstroke Forum
Ford Diesel Forum / Powerstroke Forum
Go Back   Diesel Forum - TheDieselStop.com > Ford Diesels > 7.3L IDI Diesels (Not Power Strokes)

7.3L IDI Diesels (Not Power Strokes) Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

TheDieselstop.com is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 05-24-2013, 07:46 PM   #1 (permalink)
Junior Member
 
Join Date: May 2013
Posts: 4
My Photos: (0)
Feedback Score: 0 reviews
92 F350 7.3 Starting problems

My daughter has a 92 f-350 with the 7.3 in it. The fuel lines and the seal on top of the injectors were old and leaking so we replaced them. We also replaced one of the injectors. Since then it is having trouble starting. It was taking a long time to start and would run rough for a little bit till it caught up. After that we found a fuel leak in the hard line going to the fuel filter. We replaced that and it would start great most of the time but every now and then it would start and then die after 2 or 3 seconds then wouldn't start up again. we would have to let it sit for 30 minutes or so and then it would start again. We went in and replaced the fuel filter and it did great for about two days then did it again where it will start then die and not start again for 30 minutes. I am not sure where to go from here and not sure why the problem started after we replaced the fuel lines. If anyone has any suggestions I would greatly appreciate it.
johncherry is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 05-24-2013, 07:56 PM   #2 (permalink)
Senior Member
 
chuckster57's Avatar
 
Join Date: Apr 2008
Location: Central Valley, Ca.
Posts: 15,489
My Photos: (7)
Feedback Score: 1 reviews
Welcome to the Diesel Stop

When it does start back up, does it blow any smoke and if so what color?

Next time it dies, take the fuel filter off and see how full it is, that may give us somewhere to start.
__________________
1994 F-350 7.3 IDI Turbo, crew cab, E4OD,4:10 L/S, LB, Dually Photos
ATS Turbo upgrades: 3" DP with 3" exhaust Magnaflow XL muffler: Pictures Here
2012 Copper Canyon 273 FWRET w/2 slides, Air Lift 5000 bags
Pillar pod: Autometer C2 Series gauges: pyro,trans, boost, water, oil pressure
Hypermax Cowl induction, K&N air filter, flex-a-lite 26K trans cooler with fan,Tekonsha prodigy
Train Horns: Pictures here

PM please not visitor message
chuckster57 is offline   Reply With Quote Quick reply to this message
Old 05-24-2013, 08:23 PM   #3 (permalink)
Junior Member
 
Join Date: May 2013
Posts: 4
My Photos: (0)
Feedback Score: 0 reviews
she said it normally doesn't but the last time it did blow a little gray smoke but it cleared up quick.
johncherry is offline   Reply With Quote Quick reply to this message
Old 05-24-2013, 08:40 PM   #4 (permalink)
Senior Member
 
chuckster57's Avatar
 
Join Date: Apr 2008
Location: Central Valley, Ca.
Posts: 15,489
My Photos: (7)
Feedback Score: 1 reviews
How about the filter? Full of fuel?


Sent from AutoGuide.com App
__________________
1994 F-350 7.3 IDI Turbo, crew cab, E4OD,4:10 L/S, LB, Dually Photos
ATS Turbo upgrades: 3" DP with 3" exhaust Magnaflow XL muffler: Pictures Here
2012 Copper Canyon 273 FWRET w/2 slides, Air Lift 5000 bags
Pillar pod: Autometer C2 Series gauges: pyro,trans, boost, water, oil pressure
Hypermax Cowl induction, K&N air filter, flex-a-lite 26K trans cooler with fan,Tekonsha prodigy
Train Horns: Pictures here

PM please not visitor message
chuckster57 is offline   Reply With Quote Quick reply to this message
Old 05-24-2013, 09:00 PM   #5 (permalink)
Junior Member
 
Join Date: May 2013
Posts: 4
My Photos: (0)
Feedback Score: 0 reviews
Haven't checked it yet I will have her run it tomorrow and see if it does it again. Also before she starts it I will check the level.
johncherry is offline   Reply With Quote Quick reply to this message
Old 05-24-2013, 09:04 PM   #6 (permalink)
Senior Member
 
chuckster57's Avatar
 
Join Date: Apr 2008
Location: Central Valley, Ca.
Posts: 15,489
My Photos: (7)
Feedback Score: 1 reviews
Okay. I'll be in the driveway doing intake manifold gaskets on a Chevy V6 vortec, so I may not reply for a while.


Sent from AutoGuide.com App
__________________
1994 F-350 7.3 IDI Turbo, crew cab, E4OD,4:10 L/S, LB, Dually Photos
ATS Turbo upgrades: 3" DP with 3" exhaust Magnaflow XL muffler: Pictures Here
2012 Copper Canyon 273 FWRET w/2 slides, Air Lift 5000 bags
Pillar pod: Autometer C2 Series gauges: pyro,trans, boost, water, oil pressure
Hypermax Cowl induction, K&N air filter, flex-a-lite 26K trans cooler with fan,Tekonsha prodigy
Train Horns: Pictures here

PM please not visitor message
chuckster57 is offline   Reply With Quote Quick reply to this message
Old 05-24-2013, 10:27 PM   #7 (permalink)
Senior Member
 
Join Date: Sep 2010
Location: Springfield, MO
Posts: 260
My Photos: (2)
Feedback Score: 0 reviews
Quote:
Originally Posted by chuckster57 View Post
Okay. I'll be in the driveway doing intake manifold gaskets on a Chevy V6 vortec, so I may not reply for a while.
Be sure to flush that Dex-cool crap anti-freeze if not already done.


Would anything but a full filter indicate some kind of visable fuel line leak or drain back problem? Could it drain back (not internally into engine) thru an otherwise functioning lift pump?
__________________
1993 F-250 Ext cab 7.3 IDI NA, E4OD, 4.10...box stock for now. 222k miles. running W80/85 for fuel 95% of the time, 6000+mi as of 7/7/2014
1990 F-350 crew cab 7.3L IDI Banks Sidewinder turbo, E4OD 182,xxx, My First Diesel now gone.
35+ years of Auto repair experience on anything and everything but a diesel, till 2009.
If you want it done right, do it yourself
jga2z is offline   Reply With Quote Quick reply to this message
Old 05-24-2013, 10:39 PM   #8 (permalink)
Senior Member
 
chuckster57's Avatar
 
Join Date: Apr 2008
Location: Central Valley, Ca.
Posts: 15,489
My Photos: (7)
Feedback Score: 1 reviews
It's been leaking long enough that it only has straight water in the cooling system.

If the filter is running dry, it could be a bad lift pump, or other issues in the delivery system. Dual tanks? The tank selector valves have been known to hang mid switch, restricting the flow. Fuel drain back may be the issue.

You said you changed all the caps and O rings, a cap may not be seated right, an O ring may be deformed or nicked, a cap may be deformed. Gravity will pull fuel through the return system, drawing air into the system, making for start/die, hard start.


Sent from AutoGuide.com App
__________________
1994 F-350 7.3 IDI Turbo, crew cab, E4OD,4:10 L/S, LB, Dually Photos
ATS Turbo upgrades: 3" DP with 3" exhaust Magnaflow XL muffler: Pictures Here
2012 Copper Canyon 273 FWRET w/2 slides, Air Lift 5000 bags
Pillar pod: Autometer C2 Series gauges: pyro,trans, boost, water, oil pressure
Hypermax Cowl induction, K&N air filter, flex-a-lite 26K trans cooler with fan,Tekonsha prodigy
Train Horns: Pictures here

PM please not visitor message
chuckster57 is offline   Reply With Quote Quick reply to this message
Old 05-27-2013, 12:07 PM   #9 (permalink)
Junior Member
 
Join Date: May 2013
Posts: 4
My Photos: (0)
Feedback Score: 0 reviews
checked the fuel filter

It has been sitting for three days. I pulled the fuel filter today and it was half full of diesel. Also when I pulled the filter off and there was a gurgling sound. I put the filter back on and it started then died. We sat there for a second and pumped the pedal while trying to start it and it finally caught and started again. We are about to drive it to the store and back and I will let it sit again then pull the filter to see what happens after it sits this time.
johncherry is offline   Reply With Quote Quick reply to this message
Old 05-27-2013, 03:47 PM   #10 (permalink)
Senior Member
 
chuckster57's Avatar
 
Join Date: Apr 2008
Location: Central Valley, Ca.
Posts: 15,489
My Photos: (7)
Feedback Score: 1 reviews
Pumping the pedal while cranking does nothing but give your ankle a workout. No accelerator pump, so you don't get that shot of fuel. If you heard a gurgling, and the filter was 1/2 empty, then I would bet you have a return system leak.


Sent from AutoGuide.com App
__________________
1994 F-350 7.3 IDI Turbo, crew cab, E4OD,4:10 L/S, LB, Dually Photos
ATS Turbo upgrades: 3" DP with 3" exhaust Magnaflow XL muffler: Pictures Here
2012 Copper Canyon 273 FWRET w/2 slides, Air Lift 5000 bags
Pillar pod: Autometer C2 Series gauges: pyro,trans, boost, water, oil pressure
Hypermax Cowl induction, K&N air filter, flex-a-lite 26K trans cooler with fan,Tekonsha prodigy
Train Horns: Pictures here

PM please not visitor message
chuckster57 is offline   Reply With Quote Quick reply to this message
Old 05-28-2013, 09:01 AM   #11 (permalink)
Junior Member
 
Join Date: Jun 2004
Posts: 3
My Photos: (0)
Feedback Score: 0 reviews
My 93 IDI is having similar problems. Last time it was the lift pump. It starts, while cranking cold, if you pump the throttle enough. It blows a lot of black smoke for a few seconds then it's happy.

After it gets hot, like an hours pull, it is almost impossible to restart. I have noticed that bleeding the schrader valve on top of the fuel filter seems to help. It seems to pump out some air before diesel begins to flow through the open valve. But not as much as if the fuel filter was completely drained. Is there a check valve in the lift pump... Or maybe a pin hole in it?

I'm trying to isolate the problem before I randomly throw money at the problem.
I have a fuel pressure tester. Is there a test for isolating the problem using that?

Thanks,
Dave
dlocke is offline   Reply With Quote Quick reply to this message
Old 05-28-2013, 09:06 AM   #12 (permalink)
Junior Member
 
Join Date: Jun 2004
Posts: 3
My Photos: (0)
Feedback Score: 0 reviews
Oh, and only 171k on "Moby Dick"...

Last edited by dlocke; 05-28-2013 at 09:34 AM.
dlocke is offline   Reply With Quote Quick reply to this message
Old 05-28-2013, 09:21 AM   #13 (permalink)
Senior Member
 
chuckster57's Avatar
 
Join Date: Apr 2008
Location: Central Valley, Ca.
Posts: 15,489
My Photos: (7)
Feedback Score: 1 reviews
Quote:
Originally Posted by dlocke View Post
My 93 IDI is having similar problems. Last time it was the lift pump. It starts, while cranking cold, if you pump the throttle enough. It blows a lot of black smoke for a few seconds then it's happy.

After it gets hot, like an hours pull, it is almost impossible to restart. I have noticed that bleeding the schrader valve on top of the fuel filter seems to help. It seems to pump out some air before diesel begins to flow through the open valve. But not as much as if the fuel filter was completely drained. Is there a check valve in the lift pump... Or maybe a pin hole in it?

I'm trying to isolate the problem before I randomly throw money at the problem.
I have a fuel pressure tester. Is there a test for isolating the problem using that?

Thanks,
Dave
Try pouring some tepid water over the IP and see if it starts easier. If so then a new/rebuilt IP is in your future.


Sent from AutoGuide.com App
__________________
1994 F-350 7.3 IDI Turbo, crew cab, E4OD,4:10 L/S, LB, Dually Photos
ATS Turbo upgrades: 3" DP with 3" exhaust Magnaflow XL muffler: Pictures Here
2012 Copper Canyon 273 FWRET w/2 slides, Air Lift 5000 bags
Pillar pod: Autometer C2 Series gauges: pyro,trans, boost, water, oil pressure
Hypermax Cowl induction, K&N air filter, flex-a-lite 26K trans cooler with fan,Tekonsha prodigy
Train Horns: Pictures here

PM please not visitor message
chuckster57 is offline   Reply With Quote Quick reply to this message
Old 05-28-2013, 12:09 PM   #14 (permalink)
Junior Member
 
Join Date: Jun 2004
Posts: 3
My Photos: (0)
Feedback Score: 0 reviews
Quote:
Originally Posted by chuckster57 View Post
Try pouring some tepid water over the IP and see if it starts easier. If so then a new/rebuilt IP is in your future.


Sent from AutoGuide.com App
The injector pump or the deal where the throttle linkage connects... Or are they the same?
dlocke is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

  Diesel Forum - TheDieselStop.com > Ford Diesels > 7.3L IDI Diesels (Not Power Strokes)

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Diesel Forum - TheDieselStop.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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



Wheel & Tire Center

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 02:58 PM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.