High Fuel Tank Pressure?

Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's, Olds 98 91-96, Buick Lesabres and Park Avenue 91-96. Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.
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CJCroel
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Year and Trim: 2006 Grand Prix GT
Location: Dallas, TX

High Fuel Tank Pressure?

Post by CJCroel »

Last night I experienced what sounds like my gas tank expanding, making metal "popping" noises. I stopped to fill up and upon unscrewing the gas cap, there was an absurd amount of pressure that was relieved. It hissed for a good 2-3 seconds, which it's never done before.

I just had the fuel pump replaced about 1000 miles ago, and since I have this new job with a company truck to take home, I maybe drive my car 300 miles a month, usually just on the weekends.

Also, my CEL is on, haven't had it scanned yet.

No driveablity issues, everything seems normal.
-Chris
2006 Grand Prix GT
Sport Red Met. - L32 Supercharged, Tint, Leather, Heated/Power Seats, Remote Start/Keyless, Dual Climate Control, 17" wheels, 70k miles. Mods to come.

1997 Bonneville SE *Sold*
Dark Yellow-Green Met. - Tint (35% front, 5% rear) - CAI - Aftermarket Keyless/Remote Start - Disabled DRLs - Belden Wires, TR55 plugs - Cleared Corners - Silverstars - 190,591 miles when sold
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Mechanical Mike
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Re: High Fuel Tank Pressure?

Post by Mechanical Mike »

Are you sure it was pressure & not vacuum?
2006 Chevy Monte Carlo SS
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CJCroel
SSEi Member
SSEi Member
Posts: 159
Joined: Thu May 22, 2008 1:25 am
Year and Trim: 2006 Grand Prix GT
Location: Dallas, TX

Re: High Fuel Tank Pressure?

Post by CJCroel »

pretty sure it was pressure, but i'll double check next time i drive it
-Chris
2006 Grand Prix GT
Sport Red Met. - L32 Supercharged, Tint, Leather, Heated/Power Seats, Remote Start/Keyless, Dual Climate Control, 17" wheels, 70k miles. Mods to come.

1997 Bonneville SE *Sold*
Dark Yellow-Green Met. - Tint (35% front, 5% rear) - CAI - Aftermarket Keyless/Remote Start - Disabled DRLs - Belden Wires, TR55 plugs - Cleared Corners - Silverstars - 190,591 miles when sold
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