Posted by Marty [50.68.51.62] on Monday, June 23, 2014 at 12:26:19 :
In Reply to: Re: Home from Hollister but not without a hiccup posted by Nick [99.100.212.49] on Monday, June 23, 2014 at 12:19:10 :
If there's vacuum in the gas tank, you need a new venting gas cap. Many times I've found these trucks where someone's installed a none venting cap & for obvious reasons, that won't work on a truck that doesn't have a vent in the gas tank.
There's probably a way to test an old gas cap. I have a radiator cap pressurizing tool...that would work if you have the right adapter.
Cheapest to just see when it happens again if you have a vacuum in your tank & if so...she's not venting.
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