brucer

might be your gas cap not venting..

ale76051

iTrader: (2)

Ok, and just tape it there?

SS RRR

iTrader: (2)

You may not have to. The gauge I bought had just enough to snake out out of the hood and kind of stood up once the hood was closed. You don't have to go fast. Probably best if you got yourself in stop/go situations. Test this both with a full tank and nearly empty (maybe 1/4 full).

ale76051

iTrader: (2)

ok well i have a cowl so it should be easy

95z28onjuice

iTrader: (-2)

i think you should let the car sit for a while and heat up before i just go drive around wasting gas. sounds to me like the longer you wait the better. you might even catch the pressure drop(if that is the problem) without even driving it.

If you do drive the car under load with the gauge fished out the hood, i like to use the wiper arm to hold the hose and i place the gauge sideways facing the driver seat. this will give you a clear view of 40-60 psi range. and if the needle falls down you know your loosing pressure

ale76051

iTrader: (2)

Ok thanks guys for the advice, I'll give it all a try

ale76051

iTrader: (2)

Got a fpg all hooked up on the windshield, now ready for the trip tomorrow. Hopefully this helps find out what it could be