Question about 2002 Honda S2000

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Rough idle with check engine light

Rough idle with a check engine light that keeps going on and off. compression low on one of the cylinders but that was after my valve adjusment. the difference from the other cylinders is around 40. so whats wrong with it? could it be my injectors? i also just changed my spark plugs. i have no loss in power too. the car is a honda s2000 year 07 with 80000 miles

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  • Steeler Ed May 11, 2010

    Please post the code that the check engine light is generating.

    If you had a valve adjustment and now there's low compression in a cylinder, I'd say the valve is not seating properly. If it was an injector, you'd notice a drop in power and MPG.

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  • 68 Answers

Usually a rough idle on a Honda is a result of the idle speed being too low. What is your RPM suring idle now. Try to increase it using the screw on the idle air control by only a quarter turn at a time. Hope this helps.

Posted on May 09, 2009

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