Pinging Noise

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kisuke47

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Joined
Apr 1, 2012
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Hi have a 1990 8hp evinrude two stroke it runs fine when at idle very smooth but if I rev it up there is a type of pinging noise like if I rev it up halfway there is no pinging but when I rev it up closer to full throttle you can hear it could it be out of timing or maybe something wrong with a piston? or maybe old fuel also I was running while in neutral.
 
Are you talking about pinging under load while underway or just revving the engine running in neutral? Pretty sure you should never exceed 1,700RPM if not underway.
 
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