pretty common with a bad gas cap or one that is not tight.
pretty common with a bad gas cap or one that is not tight.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
Not tight accounts for 95+% of them...
But it seems there has been enough time for you to verify that. There is a leak....or a bad FTP sensor.
Come on up and I'll put the smoke to it...