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Old 10-10-2015, 12:31 AM   #27
Zach079xxx
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Join Date: Apr 2015
Location: Shenandoah Valley, Virginia
Posts: 332
Re: 3rd gear bogging

Now that you say that, about the gas cap... The man I bought the truck from painted the entire truck and while doing so painted the gas cap, when I would have a full tank of gas it would leak out the back side like pyshically inside the wheel well, but coming from the cap. I bought a new acdelco cap and when I get gas at a gas station, I'll loosen the cap and psshhhhhhh for 4-5 seconds the pressure is released. Dang.... If it weren't after midnight I'd go run it with the cap off and see if that changes it. It's so weird thigh because I've had the gas cap for months & the truck ran amazing after the rebuild then surprise the unknown happens. Hey thanks guys, I appreciate all the help. Going to update tomorrow

Should I have a vented cap?
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85' GMC Sierra Classic
Built 350; Weiand intake, Holley 600, Thumpr Cam
Built 350 turbo with shift kit & 2500 Stall
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