Gas tank issue
#1
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Car: 1992 Z28
Engine: 305
Transmission: 5 speed
Axle/Gears: 3.42
Gas tank issue
I dont know where to put this so I'll try here. This has happend to me twice. One time I know I was a idiot and filled it up, the nozzle clicked and I filled it more. I came home, parked in the garage and two hours later I had a puddle of gas on the floor. Lesson learned. Today, I filled the car, let it click off and stopped. I rotated the cap untill I got three clicks and off I went. Went out to the garage and I smelt gas. I looked under the car and nothing on the floor but saw where gas had leaked onto the side of the tank. I pulled it out, sprayed some cleaner up there and washed it off. No more smell.
I was wondering what this could be? I dont have a vented cap and when I took the cap off I got the whoooooosh of air pressure. I was told that was a good thing. I've removed the cap a few times and did not get that whooooosh sound and did'nt have the gas smell after adding gas. I put in 7 gallons of gas on this particular stop. I'm wondering if I have too much pressure.
I was wondering what this could be? I dont have a vented cap and when I took the cap off I got the whoooooosh of air pressure. I was told that was a good thing. I've removed the cap a few times and did not get that whooooosh sound and did'nt have the gas smell after adding gas. I put in 7 gallons of gas on this particular stop. I'm wondering if I have too much pressure.
#2
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Car: 91 firebird Formula 350
Engine: 350 TPI
Transmission: N/A, working on a t5 swap
Axle/Gears: 3.73 posi
Re: Gas tank issue
That leak makes me wonder if you have the infamous problem with your gas tank filler neck getting a crack or pinholes. Lucky for you, if you do, there actually is a chance that you can go get your tank replaced by gm for free. look up the recall on the filler neck. I don't have links so I'm hoping someone else will chime in here to help with more specifics
#3
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Car: 1992 Z28
Engine: 305
Transmission: 5 speed
Axle/Gears: 3.42
Re: Gas tank issue
I wondered the same thing but if I had a crack or pinhole then it would'nt hold pressure when I opened the cap. Then again is has to be open somewhere to get the leaking.
#4
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Car: 91 firebird Formula 350
Engine: 350 TPI
Transmission: N/A, working on a t5 swap
Axle/Gears: 3.73 posi
Re: Gas tank issue
have you looked at the filler neck to see if there is anything noticeable? just grab one of those extendable mirrors and a flashlight and check all around where the filler meets the tank
#5
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Car: 91 firebird Formula 350
Engine: 350 TPI
Transmission: N/A, working on a t5 swap
Axle/Gears: 3.73 posi
Re: Gas tank issue
And there can definitely still be pressure even with a crack. For example, if the hole is small enough, and possibly your charcoal canister is clogged or something like that. Anything is possible.
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