Q: Tail pipe sucks in at times, sucks in a dollar bill

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seems like a small miss and sucks in dollar bill at tailpipe

My car has 150000 miles.
My car has a manual transmission.

If you have an engine that is running rough and misfiring and the exhaust is sucking in sometimes then you may have an exhaust valve that is sticking open. You should have a compression test to the motor. The valves may be sticking open causing the cylinder to suck in from the exhaust rather than through the intake manifold. A compression test will isolate the bad valves in the motor.

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