2010 mercury 9.9 4stroke blowin smoke out of exauhst relief port

by Andrew turner
(Ocala, fl)

Last sunday went oot to my local lake early in the morning, 6:30 to be exact, i let my motor warm up like i always do, no smoke, started out from the boat ramp, got it up on plane no problems, then i decided to move spots fired it up an started getting white smoke out of the exauhst relief port sn a metal pinging noise but motor was pissin great, an ran awesome like always, but it would only smoke an make that noise at idle speeds but it would stop when running an like i said it never skipped a beat, started first pull like always, im stumped if anyone could help it would be greatly appreciated!!!, as i spend most of my life out on my boat bassfishing its a 2010 mercury 4stroke 9.9 short shaft on a decked 14ft alumacraft jon boat

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