7.3 running rough
Thread Starter
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Elder User
Joined: Jan 2008
Posts: 837
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From: Newark, Delaware
7.3 running rough
Ok so I just got my fuel lines fixed so that solved the leaks. However, my truck is still running really rough like when the line was broken. Could I have f'ed up an injector? Is this a more serious problem with the cylinder? I really need to get this thing fixed so any input you guys can offer is greatly appreciated. Thanks Fellas!
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 16
From: Nutter Fort, WV
Ok you can find injectors for under 300 for the set.
www.mwfi.com
They have new Delphi injectors listed for the 88 for 24 dollars each.
So you are looking at 192 plus shipping and tax.
Before you go that far, are you running any diesel conditioner in your fuel?
A double dose of Diesel Kleen may fix your problem if you are not using a conditioner on a regular basis.
www.mwfi.com
They have new Delphi injectors listed for the 88 for 24 dollars each.
So you are looking at 192 plus shipping and tax.
Before you go that far, are you running any diesel conditioner in your fuel?
A double dose of Diesel Kleen may fix your problem if you are not using a conditioner on a regular basis.
Thread Starter
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Elder User
Joined: Jan 2008
Posts: 837
Likes: 0
From: Newark, Delaware
No, I havent been running any conditioner. I drove it for about 10 minutes today and I started smelling/seeing fuel dripping, so I dont know what the deal is. I need to get it all ironed out asap though. The fuel problems are the only problems I've ever had with the truck.
Laughing Gas
Joined: Aug 2007
Posts: 1,132
Likes: 0
From: Baldwin, ND
Could it be related to the amount of fuel in the tanks. I am sure you know but many times the fuel pickup lines break and cause these trucks to run rough or starve the engine of fuel. Usually happens around 1/3 tank......but since you have leaky lines its probably not this.....but I am trying.
Thad
Thad
Lead Driver
Joined: Jan 2005
Posts: 7,782
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From: Huntington Indiana
Originally Posted by gasgrunt88
No, I havent been running any conditioner. I drove it for about 10 minutes today and I started smelling/seeing fuel dripping, so I dont know what the deal is. I need to get it all ironed out asap though. The fuel problems are the only problems I've ever had with the truck.
Thread Starter
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Elder User
Joined: Jan 2008
Posts: 837
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From: Newark, Delaware
The fuel is leaking from 1 or more of the lines coming off of the injection pump. They keep breaking, apparently because they didnt have the clamps on there. Now I thought I got the leak fixed but it was still running rough, like the cylinder wasn't getting enough fuel. Now I smell fuel again so I'm thinking its another leak and possibly a bad injector now. I just had the injector seals replaced back in the fall. I'd like to fix it myself if at all possible. I dont wanna have to put it back in the shop. As far as I know it is not related to the amount of fuel left in the tanks...
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Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 16
From: Nutter Fort, WV
Are the injection line clamps back on the engine?
You can see where they should be located in this picture.
You can see where they should be located in this picture.
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Junior User
Joined: Dec 2007
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return line
In the picture i see you have your return line going back to your IP. is it possible to bypass that return line like that on a truck with the metal tube going back. I have a 86 f250 6.9 with the banks turbo and it is pretty hard to reach back and change the return lines. one is dangling back and i'm pretty sure it goes back to the gas tank. Is your setup similiar with the return line going to the tank or does your IP capture all the fuel possible?
Junior User
Joined: Dec 2007
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?
After looking at it again i can see you have the tank return . Is there a way to just bypass the tank return plug it and "contain" the system to the 8 cylinders and IP. It seems like it would deliver more fuel?
Senior User
Joined: Jan 2008
Posts: 224
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From: On a farm near Malmo
If the IP does not have a return line to the tank it will build to much housing psi and quite running or blow out the housing gasket. The same will happen if the check valve on the top of the pump is plugged. It regulates the housing psi.