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Bucking and surging at WOT throttle after gas fill up. Bad gas, watered down gas?

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Old 12-27-2006, 12:22 PM
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Default Bucking and surging at WOT throttle after gas fill up. Bad gas, watered down gas?

I had to make a stop for gas at a unfamiliar gas station today (Sunoco) and filled up. At first WOT throttle was normal, but after about 15 miles it bucked pretty hard at WOT, tried it again and same thing but alittle less violent. The more load put on the engine the more in surges/bucks.

Could this be bad gas? Car is running same amount of boost so I dont think a leak.

Maybe I filled with a lower octane? But I doubt that very much.

Any insight is appreciated, car runs fun at low boost and normal driving. Thanks.
Old 12-27-2006, 12:35 PM
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sounds like a misfire? Maybe put some dry gas in or octane boost?
Old 12-27-2006, 12:58 PM
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Ditto re: the misfires. Happened to me a few weeks ago. Changed plugs = all good!
Old 12-27-2006, 01:10 PM
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Default When's the last time you changed your fuel filter?

Could be clogged from contaminated gas.
Old 12-27-2006, 02:01 PM
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Sounds like your EGT sensor could be bad.
Old 12-27-2006, 11:32 PM
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Default Boost leak.

Bad EGT feels like hitting a wall when let your foot off the accelerator.
Old 12-28-2006, 07:34 AM
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2nd.
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