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Not boosting then thumping sound from block

T

Tee

Guest
Hey guys I'm a new S15 owner and I just serviced it 2 weeks ago. Did spark plugs and spaced them. Then I encountered a problem with it not boosting and a weird sound in the engine bay. Sounded like it was coming from the top of the dump pipe. We took the old gasket out and re sealed it. It seems like it's misfiring and making a weird thudding sound, especially when I first take off in first. A mate reckons it could be a problem with the engine mount as well cause you do get a lot of movement in the engine bay.
 
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