Fuel leak
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Laughing Gas
Joined: Feb 2014
Posts: 1,041
Likes: 72
From: Springfield
Fuel leak
It probably started atleast a month back and I’m having a heck of a time tracking it down. Ive got enough of a leak to leave spots everywhere I park and wet the underside of the engine and crossmember. Odd thing is the leak is the front side of the engine, like the flex lines are leaking. Ive hosed it off several times and layed under the front end with the engine running looking for drips or anything to show where my leak is actually coming from and no luck. Anyone have any insight on a fuel leak from that area and even more so how I might be able to stop it? I’d read somewhere about o rings in the flex lines going bad and being able to replace just the rings but couldn’t get a consistent part number for the o rings. I haven’t taken the flex lines loose in over 2 years.
5th Wheeling
Joined: Nov 2012
Posts: 48
Likes: 10
From: Kuna, ID
Check the fuel bowl drain, it comes out on the front of the engine, passenger side. You will see a tube just above the manifold. The o-rings are known to rot out. The truck needs to be running to see it coming out. This just happened to me on my 99 F350.
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Laughing Gas
Joined: Feb 2014
Posts: 1,041
Likes: 72
From: Springfield
I’ve replaced all the factory fuel lines on the engine with the CNC 4 line kit. I don’t believe there’s anymore of the Parker sleeves left. I’m hoping it’s just o rings on the flex lines from frame to engine but I can’t see them leaking
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Hotshot
Joined: Dec 2012
Posts: 11,266
Likes: 1,649
From: Las Cruces New Mexico
Clean the suspect area with brake clean and use some baby powered all over the area to help pin point the leak. Also a picture is worth a thousand words.
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Laughing Gas
Joined: Feb 2014
Posts: 1,041
Likes: 72
From: Springfield
If the weather is decent tomorrow I’ll drag out the pressure washer and some degreaser, not using brake clean since I’m tired of it eating the paint off everything. Not sure how a pic would do much good, it the flex fuel lines that run from the frame to the hard lines on the front of the engine. About all you can see without pulling a lot off the drivers side of the engine is the ends
Hotshot
Joined: Mar 2014
Posts: 10,750
Likes: 1,065
From: Douglassville, PA
I had one where the fuel lines that run from the bottom of the engine to the top, behind the oil cooler, rusted through. Turn the fuel pump on and look for a fine mist in that vicinity. It starts as a fine mist and progresses from there. Those lines are a bear to change.
Lead Driver
Joined: Oct 2005
Posts: 6,129
Likes: 1,919
From: Ponca City, OK
If the weather is decent tomorrow I’ll drag out the pressure washer and some degreaser, not using brake clean since I’m tired of it eating the paint off everything. Not sure how a pic would do much good, it the flex fuel lines that run from the frame to the hard lines on the front of the engine. About all you can see without pulling a lot off the drivers side of the engine is the ends
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Laughing Gas
Joined: Feb 2014
Posts: 1,041
Likes: 72
From: Springfield
Sounds like a plan. I don’t remember those hard lines being bad at all when I went through the engine about 3 years ago but stranger things have happened. Just tired of marking my spot everywhere I go
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