Fuel Leak
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Laughing Gas
Joined: Apr 2011
Posts: 1,002
Likes: 7
From: London, KY
Fuel Leak
Hey guys, been a while since I've been on the IDI forum. I've been doing alot of 6.oh work lately so I've been in that forum. My ole '93 rarely gives me any trouble but today I noticed a wet spot in the driveway underneath the truck. I climbed under and looked and at first I thought it was oil dripping off the bell housing but I checked and it's definitely fuel. I wasn't dressed for a thorough inspection but I did take a quick look at the return lines and they are dry. I couldn't see the main return line that runs back to the tank so I don't know it's condition. What would be the most likely place for me to check that would be leaking fuel and running down the bell housing?
Elder User
Joined: Dec 2005
Posts: 776
Likes: 3
From: Felton, Delaware
There's a fuel return line at the back of the engine for all the injectors and fuel filter, the main line that goes back to the tank, if you IP is leaking it will drip into the valley pan and drain out of the back of the block and down the transmission.
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Laughing Gas
Joined: Apr 2011
Posts: 1,002
Likes: 7
From: London, KY
Thanks guys. It's the return line going down the back of the engine. I'm gonna go ahead and replace all the return lines while I'm at it. I've done plenty of those but I've never replaced that rear line. Where can I get that line at? Is it just 1/4" ID rubber fuel line?
Elder User
Joined: Dec 2005
Posts: 776
Likes: 3
From: Felton, Delaware
i used 5/16" id going back to the line that returns to the tank after the junction elbow thats bolted to the engine. I think there is maybe 6" of rubber line making the bend? I used 3/8" cunnifer tubing when i replaced all of my steel lines. I used 30R14 available at all napas, it's rated for biodiesel even if you don't run it, it's a better hose and only $2 a foot.
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Laughing Gas
Joined: Apr 2011
Posts: 1,002
Likes: 7
From: London, KY
i used 5/16" id going back to the line that returns to the tank after the junction elbow thats bolted to the engine. I think there is maybe 6" of rubber line making the bend? I used 3/8" cunnifer tubing when i replaced all of my steel lines. I used 30R14 available at all napas, it's rated for biodiesel even if you don't run it, it's a better hose and only $2 a foot.
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tkcollin
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
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Oct 31, 2003 10:29 PM
