Large Fuel Leak..
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Junior User
Joined: Dec 2006
Posts: 67
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Large Fuel Leak..
ok.. changed the oil and fuel filter like I have done a ton of times.. straight forward everything goes smooth. Start truck-nice and quiet she loves fresh oil, going let it idle a few and then recheck oil level. Walk away and come back in a few minutes and fuel is dripping like crazy.
Shut it down, get the hose and run some water to get fuel to run off, figure its the fuel filter housing, reseat it, start again and double check housing when running no leaks, look under truck and its dripping, figure its water, wait a minute and its obvioulsy diesel, no visible leaks up top and the fuel is dripping down around bell housing on right side, large leak..Fuel filter isnt leaking and the bleed valve is closed, dark out and there is no way I am going underneath with any kind of light source, going to wait till daylight
any ideas?
Shut it down, get the hose and run some water to get fuel to run off, figure its the fuel filter housing, reseat it, start again and double check housing when running no leaks, look under truck and its dripping, figure its water, wait a minute and its obvioulsy diesel, no visible leaks up top and the fuel is dripping down around bell housing on right side, large leak..Fuel filter isnt leaking and the bleed valve is closed, dark out and there is no way I am going underneath with any kind of light source, going to wait till daylight
any ideas?
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
Drain valve o-rings are a common leak, but if it's running down the bell housing I'd check the fuel lines in the valley where they connect to the heads. Check the fuel lines where they go into the fuel bowl too and the return line.
Postmaster
Joined: Jun 2007
Posts: 2,795
Likes: 1
From: Rogue River, OR
You need to get back to basics. Mop & clean the "valley of Death" squeaky clean and dry. That is where you will find your leak. Get a bright flash light and a good quality mirror capable of being snaked into the nooks and crannies of the valley.
Start the motor and then search for the leak. Go slowly and be patient.
Here are some places to check.
1) Very rear of the fuel pump at the weep hole.
2) Banjo bolt at rear of fuel pump.
3) The blue fuel lines from the pump.
4) Bottom of filter housing.
5) the sensors on the drivers side of fuel bowl.
6) Fuel bowl drain valve.
7) All lines & Connections to the fuel bowl.
By this point....you should have located the leak (s).
Let us know how you do.
Rog
Start the motor and then search for the leak. Go slowly and be patient.
Here are some places to check.
1) Very rear of the fuel pump at the weep hole.
2) Banjo bolt at rear of fuel pump.
3) The blue fuel lines from the pump.
4) Bottom of filter housing.
5) the sensors on the drivers side of fuel bowl.
6) Fuel bowl drain valve.
7) All lines & Connections to the fuel bowl.
By this point....you should have located the leak (s).
Let us know how you do.
Rog
Postmaster
Joined: Jun 2007
Posts: 2,795
Likes: 1
From: Rogue River, OR
"Simple Green" works well. DO NOT wash your engine when it is HOT. Warm or cold. NEVER use pressure water and avoid water around any and all electrical connections.
The reason that the fuel is draining out the back on the passenger side is that the valley drain hole is located there.
Good luck and happy hunting. Ya just gotta believe that you are smarter than a fuel leak.
Rog
The reason that the fuel is draining out the back on the passenger side is that the valley drain hole is located there.
Good luck and happy hunting. Ya just gotta believe that you are smarter than a fuel leak.
Rog
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Junior User
Joined: Dec 2006
Posts: 67
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"Simple Green" works well. DO NOT wash your engine when it is HOT. Warm or cold. NEVER use pressure water and avoid water around any and all electrical connections.
The reason that the fuel is draining out the back on the passenger side is that the valley drain hole is located there.
Good luck and happy hunting. Ya just gotta believe that you are smarter than a fuel leak.
Rog
The reason that the fuel is draining out the back on the passenger side is that the valley drain hole is located there.
Good luck and happy hunting. Ya just gotta believe that you are smarter than a fuel leak.
Rog
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FOREIGN GURU
Joined: Jul 2006
Posts: 7,655
Likes: 7
From: Celaya, Gto. MX
X2 on that. According with the symptoms you described in the first post, I bet that the o-ring with a base and a bevel is malpositionated or the cap is a little loose. Check it out.
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Junior User
Joined: Dec 2006
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sorry, I have been getting home late last few nights, the fuel filter cap o-ring is not leaking
by the time I start the truck and come around the valley is full and I cant see leak.. but its been in dark by myself, I am going to be digging into friday during day
I dont mind going ahead and replacing more stuff than I need as the truck is 14 years old and just about to break 200K...
I would like to just go ahead and order any seal that the fuel filter housing may have (besides the cap o-ring -)
thanks for the replies
by the time I start the truck and come around the valley is full and I cant see leak.. but its been in dark by myself, I am going to be digging into friday during day
I dont mind going ahead and replacing more stuff than I need as the truck is 14 years old and just about to break 200K...
I would like to just go ahead and order any seal that the fuel filter housing may have (besides the cap o-ring -)
thanks for the replies