Gas Leak

hey my 85 300zx leaks gas out the gas cap everytime i fill it up all the way and let it sit for a little bit. Any ideas i figured check my fuel filter and my pump but other than that i'm not sure and does that happen on a lot of them? cause i've noticed a lot of z's are rusting in that fender where the gas cap is.. any help will be appriciated

Get a new gas cap.

yet it also feels like theirs a lack of flow with the gas when accelerating

I'd say get a new gas cap, too. Checking the fuel filter isn't a bad idea either.

Hey antiburn...where'd you get the Z31 model? That's bad ass.

if the z31 gas cap is like the z32 gas cap, then it is pressurized. so like llz and antiburn said, i would try a new gas cap. and also i would replace the fuel filter, it is just a $10 replacement.