PLEASE help. we cant figure out simple leak - Ford Powerstroke Diesel Forum
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post #1 of 6 Old 09-09-2013, 09:06 PM Thread Starter
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PLEASE help. we cant figure out simple leak

Hey guys, alright I have an 01 with 100k miles. The other day I changed the fuel filter (2 Fridays ago) the previous owner put one of those Napa filters in where the cap is attached to the filter. So I bought a motorcraft filter and ford cap from the dealer. So after I finished i checked for leaks and everything was fine, even drove 50 miles that night with no issues. So next day I went to the truck pulls about 2 hours away and the hole way there I smelt diesel fuel. Turned the a/c on and it nearly made my eyes water. So pulled over and realized it was pissing fuel everywhere, popped the hood, and the motor was even smoking from the fuel everywhere. So I took fuel bowl cap off and re tightened and it eventually stops. So fast forward to following Tuesday it started pissing again just not nearly as bad, again took cap off re tightened and adjusted seal and it still was leaking, though not as bad as any other time.

SHORT VERSION: FUEL LEAKING from fuel bowl area. question is what could it be? I DONT think its anything to do with the drain valve as its damp around the edges of the cap. Everywhere I park it leaves a wet spot, and I can smell diesel fumes here and there not nearly as bad as the first time it leaked bit they are slightly noticable. The first time it leaked it left a HUGE PUDDLE.


I even had my friend who works at ford try putting it on to see if I was maybe doing it incorrectly but still didn't help. Everyone involved is confused.


ANY HELP will be greatly appreciated. Sorry for long post, second paragraph is the summary.

Thanks,

Mike

2001 f250 lariat 7.3l ONLY 99K MILES
-4" diamondeye turbo back straight pipe
-5" RBP tip
-intake
-120hp edge evolution CTS
-westin bull bar
-07' front end conversion
-12' rear end conversion/bed and tail gate
-04' 18" chrome wheels
-PLATINUM SERIES gauge cluster
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post #2 of 6 Old 09-09-2013, 10:50 PM
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Did you put the O-ring on upside down?
Did you over tighten?
Start the truck and verify its leaking out the cap.
These filters are a PITA and usually take me two or three times before I get it top stop leaking. I usually will dab a little grease on the O-ring so it won't roll.
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post #3 of 6 Old 09-09-2013, 11:13 PM Thread Starter
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Quote:
Originally Posted by hucorey View Post
Did you put the O-ring on upside down?
Did you over tighten?
Start the truck and verify its leaking out the cap.
These filters are a PITA and usually take me two or three times before I get it top stop leaking. I usually will dab a little grease on the O-ring so it won't roll.
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Hey thanks for quick reply. I am sure I got the o ring in right, as its the triangular side up. I actually tried 2 different o rings to. I dont think the cap is over tightened either.The thing is, it won't start leaking right away, so I can't start it and pop the hood and look. I wish I could as it would make it a little easier. Hah I actually have to drive for a decent amount of time before it starts to leak, and when it does it looks wet around the bottom part of the cap.

Any other ideas??

Thanks again
Mike

2001 f250 lariat 7.3l ONLY 99K MILES
-4" diamondeye turbo back straight pipe
-5" RBP tip
-intake
-120hp edge evolution CTS
-westin bull bar
-07' front end conversion
-12' rear end conversion/bed and tail gate
-04' 18" chrome wheels
-PLATINUM SERIES gauge cluster
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post #4 of 6 Old 09-10-2013, 12:39 AM
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Get a new cap, and o ring, or put the old one on with a new o ring.

I had the same problem once, no matter what I did I could get the one cap to stop leaking.

I got a different one from the parts store and tossed it on
(-30C outside in a car wash bay because that's when the leak went critical) but it has been good ever since. And come to think of it, it's about time for the yearly change.

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post #5 of 6 Old 09-10-2013, 09:13 PM Thread Starter
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Quote:
Originally Posted by schlutzer View Post
Get a new cap, and o ring,or put the old one on with a new o ring

I had the same problem once, no matter what I did I could get the one cap to stop leaking.

I got a different one from the parts store and tossed it on
(-30C outside in a car wash bay because that's when the leak went critical) but it has been good ever since. And come to think of it, it's about time for the yearly change.
that was the first thing i did, i tried a different o ring thinking the original one was faulty. i believe im going to have to try and get a new cap. do you guys think ford will give me a hard time about replacing this one with a new one? i paid 62$ from ford for this one, which seems ridiculous to me.

i am just hoping its something as simple as it being a bad cap, because very few people have hard of this.


thanks for the help.
any other advice is welcome.

thanks
guys

mike

2001 f250 lariat 7.3l ONLY 99K MILES
-4" diamondeye turbo back straight pipe
-5" RBP tip
-intake
-120hp edge evolution CTS
-westin bull bar
-07' front end conversion
-12' rear end conversion/bed and tail gate
-04' 18" chrome wheels
-PLATINUM SERIES gauge cluster
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post #6 of 6 Old 09-10-2013, 10:10 PM
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i get mine from Fleetfilter.com. Their WIX brand with incorporated caps. Knock on wood, but NEVER had a problem. Do you have a fuel pressure gauge? Maybe the FPR spring/plunger is bad, causing high psi, ???

99.5 x-cab 7.3l, 6spd, 161k miles.....
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