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Old 01-27-2011, 08:03 AM
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leaking fuel

just replaced the lift pump about a month ago but my trucks still leaking fuel
it looks like its somewhere on the back of the engine but im not sure its driping on the front of the tranny
any ideas??
thanks
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Old 02-01-2011, 05:56 PM
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There are 2 fuel lines that run to the back of the head. One line per head. I have a mystery fule leak on mine also. I have asked if anyone else has had these fuel lines leak on their trucks and have not got a reply. Check yout banjo nut and make sure you got it tight also check around your fuel filter housing because that motor is tipped a little bit and will drain towards the back. Is there any fuel in your valley?
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Old 02-02-2011, 08:33 AM
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its not by the fuel filter. wheres they valley? kinda new to diesels
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Old 02-02-2011, 10:26 AM
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valley is just the gap between the heads, makes a valley that drains everything to the back of the motor and then down through the bell housing, how far towards the front of the motor is it leaking? there are rubber hoses in there that do tend to crack...
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Old 02-02-2011, 02:57 PM
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ok ill have to check there and i think its more towards the back of the engine because its its driping on the tranny
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Old 02-02-2011, 07:23 PM
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everything from on top of the motor that hits the valley will drain into the bell housing, so if you look how far forward your leak is it'll help you locate the leak
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Old 02-03-2011, 02:33 PM
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yup fuel in the valey
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Old 02-03-2011, 02:37 PM
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look here: Replacement O-rings for Ford Diesel Engines

and here: Replacement O-rings for Ford Diesel Engines

i would replace all the orings and hoses,. but thats just me.
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Old 02-08-2011, 02:24 PM
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I have a 95 F250 7.3 and my leak was from the water fuel sensor located on the backside of the fuel filter housing. I replaced all of may fuel hoses to the fuel pump. I replaced the sensor and it stopped for a few years and started back up again. Mechanic told me this was common on those types of trucks.
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Old 02-08-2011, 02:54 PM
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Was there fuel in the valley when it was leaking out of there?
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