1999 f350 7.3 starting issue
Thread Starter
|
Trailering
Joined: Mar 2024
Posts: 20
Likes: 10
1999 f350 7.3 starting issue
Hi all, I have a 1999 7.3l super duty. Been a wonderful truck up until the other day.
I was driving home and the engine wouldn’t respond to the gas pedal. It would do it intermittently. The next morning as soon as I started it it would die.
I had just checked all fluids a few days before all were good, i was thinking maybe it wasn’t getting fuel so I relieved the fuel bowl pressure and removed the filter. The fuel was black. I immediately check my oil level and it was 4 quarts low. At this point a decide to pull the injectors and replace my O-rings put fresh oil in it with new O-rings on all injectors but now the issue is it just won’t start it just cranks. I didn’t notice on the first injector there. It was what appeared to be a small plastic gasket or what I’m not sure all the way down by the copper gasket. Somebody told me that that part is needed in order for it to fire but I never heard anything about this and the one that I had was cracked and broke anyway so I don’t know if anybody can help me, please let me know
I was driving home and the engine wouldn’t respond to the gas pedal. It would do it intermittently. The next morning as soon as I started it it would die.
I had just checked all fluids a few days before all were good, i was thinking maybe it wasn’t getting fuel so I relieved the fuel bowl pressure and removed the filter. The fuel was black. I immediately check my oil level and it was 4 quarts low. At this point a decide to pull the injectors and replace my O-rings put fresh oil in it with new O-rings on all injectors but now the issue is it just won’t start it just cranks. I didn’t notice on the first injector there. It was what appeared to be a small plastic gasket or what I’m not sure all the way down by the copper gasket. Somebody told me that that part is needed in order for it to fire but I never heard anything about this and the one that I had was cracked and broke anyway so I don’t know if anybody can help me, please let me know
Lead Driver
Joined: Oct 2005
Posts: 6,129
Likes: 1,919
From: Ponca City, OK
What does "cracks" mean exactly? Do you see oil pressure build on the gauge in the cluster? Did you fill the hpop reservoir with oil before attempting to start the truck? Make sure the reservoir is full then remove the ICP sensor. Do you see a steady trickle of oil coming from the hole? If no wait until you do. That should bleed any trapped air from the pump escape.
Edit: Cranks, just came to me. My bad.
Edit: Cranks, just came to me. My bad.
Lead Driver
Joined: Oct 2005
Posts: 6,129
Likes: 1,919
From: Ponca City, OK
I didn’t notice on the first injector there. It was what appeared to be a small plastic gasket or what I’m not sure all the way down by the copper gasket. Somebody told me that that part is needed in order for it to fire but I never heard anything about this and the one that I had was cracked and broke anyway so I don’t know if anybody can help me, please let me know
Thread Starter
|
Trailering
Joined: Mar 2024
Posts: 20
Likes: 10
You can see small plastic right where the copper washer is.
Thread Starter
|
Trailering
Joined: Mar 2024
Posts: 20
Likes: 10
What does "cracks" mean exactly? Do you see oil pressure build on the gauge in the cluster? Did you fill the hpop reservoir with oil before attempting to start the truck? Make sure the reservoir is full then remove the ICP sensor. Do you see a steady trickle of oil coming from the hole? If no wait until you do. That should bleed any trapped air from the pump escape.
Edit: Cranks, just came to me. My bad.
Edit: Cranks, just came to me. My bad.
If you look at the very end of the injector you'll see a little plastic piece and another little plastic piece sitting on the towel that was only on one injector not on any other ones
Lead Driver
Joined: Oct 2005
Posts: 6,129
Likes: 1,919
From: Ponca City, OK
Yeah, whatever that is it isn't supposed to be there. Whoever told you otherwise, you might let them know so they don't spread anymore bad info around. If all the injector bores are clean now and injectors torqued properly you should be fine. It does take a bit of cranking to get the hpo system filled up and build enough pressure to start the engine. Make sure the reservoir is full and crank the engine until you see the dash gauge build pressure. Usually takes 2-3 rounds of 10 or so seconds of cranking to fire the engine after injector work.
It's a Van Gogh
Joined: Feb 2010
Posts: 7,813
Likes: 1,335
From: Elk Grove, CA
That little plastic gasket on the injector tip is blowing my mind. It would definitely explain oil in the fuel. If it ran at all. Maybe it got picked up after you pulled the injectors? Rolling around in a box?
How long have you had the truck?
How long have you had the truck?
Trending Topics
Lead Driver
Joined: Jul 2017
Posts: 6,855
Likes: 2,332
From: WV
I’m gonna guess it was a injector tip cover. Possibly someone changed an injector and forgot to remove it?
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
Thread Starter
|
Trailering
Joined: Mar 2024
Posts: 20
Likes: 10
My thoughts exactly it's the only thing that would make any sense.
Thread Starter
|
Trailering
Joined: Mar 2024
Posts: 20
Likes: 10
IT STARTED!!! I would like to say thank you to those who responded to my thread. Every post was excellent helpful and easily understood. 3 long nights (4am) a lot of banging my head but after constantly cycling it I sat there numb then I thought why not open the drain to the fuel bowl to see if it was full then I closed it cycled 3 times and it started right up,a bit rough at 1st but smoothed out quickly. I'm now thinking there may have been an air lock involved towards the end.
Once again thank you all!
Once again thank you all!
Laughing Gas
Joined: Jun 2013
Posts: 1,097
Likes: 514
From: Yokosuka Japan
Glad to hear you got it sorted, but to bring my two cents worth and 25+ years of wrenching on EFI gasoline cars, that looks like the injector seal on a typical gasoline motor that goes into the manifold to seal the injector to the intake manifold... they are made out of rubber and sit in that location.
Now why a diesel would have that on it is beyond me. which injector did that come from, and secondly who swapped out the injector on the initial recall to install a long lead injector? did your have that recall? Mine did with the PO/original owner, how much you want to bet some retard in a dealership who does not normally work on diesels put that on 20+ years ago?
Now why a diesel would have that on it is beyond me. which injector did that come from, and secondly who swapped out the injector on the initial recall to install a long lead injector? did your have that recall? Mine did with the PO/original owner, how much you want to bet some retard in a dealership who does not normally work on diesels put that on 20+ years ago?
Thread
Thread Starter
Forum
Replies
Last Post
jay5plusone
1994.5 - 1997 7.3L Power Stroke Diesel
1
Feb 12, 2021 03:52 PM
Patrick Austin
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
15
May 3, 2020 04:53 PM
ryder1541
1999 - 2003 7.3L Power Stroke Diesel
19
Aug 24, 2013 10:09 AM