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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.
2001 f250 lariat 7.3l ONLY 99K MILES
-4" diamondeye turbo back straight pipe
-5" RBP tip
-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