Diesel fuel leak in valley - Ford Powerstroke Diesel Forum
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Old 10-23-2011, 04:43 PM
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Diesel fuel leak in valley

1994.5, have two 1 inch puddles on ground under both sides of bell housing after parking over night. The valley it has diesel under turbo pedestal.
Pulled out lots diesel soaked crud. Pulled the y-pipe off and ran engine. Did not see anything obviously leaking, not that i could see a whole lot...
Both top fuel hoses under heat shield are blue and look dry, bottom hose from filter bowel to pump soaked & dirty, hose clamp seems tight. Looks like regular hose clamps were used. Shouldn't they be special fuel hose clamps?
If its the pump are the likely leak points visible at idle?
Where is the weep hole?
Bottom of filter bowel & area damp with fuel & dirt as well. Filter lid is dry.
What are the chances of getting lucky finding out the leak is from filter bowel and or hoses?
Thanks
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Old 10-23-2011, 05:41 PM
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You might want to drain the bowl, pull the filter, unscrew the standpipe (7/8" crows-foot wrench, LEFTHAND THREADED!!!), unplug and remove the fuel heater element, and cleanout the bowl looking for pitting and/or holes. The fuel restriction sensor (way at the rear bottom of the bowl on a 94) are known leakers. Check the banjo bolt on the rear of the pump. The weep hole is almost right at the base of the pump where it enters the block. I like to clean everything as good as I can using Brake cleaner and then run it to see the leak. Cheers!
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Old 10-24-2011, 05:34 PM
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Will get the fuel and rest of the crap out of the valley and use brake cleaner to clean things up, then look for leaks.
Is brake cleaner too aggressive for wiring and hoses?
Where is the weep hole; front, back, left or right side of pump?
Thanks
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Old 10-25-2011, 07:40 AM
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the weep hole is on the passenger side of the mechanical fuel pump, hard to tell but i just did mine and it was leaking pretty good too.
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