240Z, 260Z, 280Z Performance / Technical Discussions related to performance motor enhancements, upgrades.

Gas Pumping Out of the Tank Fill Point

Old 09-17-2012, 06:48 AM
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Gas Pumping Out of the Tank Fill Point

"Tank Fill Point" (where you put the gas in) ... Last week I filled my tank and noticed the smell of gas driving down the road. I'm at a stop light and I think the young lady rolling down her window wants to comment on how neat my car is.... Instead, she tells me I have gas leaking out of my gas cap area.

It took a while of repeatedly shutting down and letting the gas settle, starting it up only to still have it pumping gas up and out of the fill point.... finally got in and drove home a few miles hoping I wasn't going to blow up.

It stopped and hasn't happened again, but then I'm afraid to fill it up and have it repeat the problem, so I've been only putting 10gals in at a time.

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Old 09-17-2012, 10:03 AM
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Originally Posted by RonK View Post
What year is the car? Carb or EFI?

Don't over fill it. Since he S30's don't have the normal trip valve to stop the pump, you have to pay attention to how much fuel you need.

Also, there are fuel tank vent lines... check them. And download the FSM from XenonS30
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Old 09-17-2012, 09:51 PM
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It's a 1975 280z fuel injected.... definitely not going to overfill it ever again!
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