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Stuck valve?? Exhaust is pulling backwards

3980 Views 16 Replies 6 Participants Last post by  Chief2Horses
What all makes the exhaust suck backwards.

I have no exhaust leaks. Im figuring a stuck valve, but which side intake/exhaust?

Compression test was bad, but could it be anything else. All cylinders pumped up about the same.
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If you still have the stock H pipe, a misfire will cause the same symptoms as a valve not seating. I just checked my 96 gt and that's what it was doing. I searched last night for other causes and quite a few people had a misfire and when that was fixed it was back to normal.
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