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Blown piston on a 1990 Johnson 9.9
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<blockquote data-quote="Pappy" data-source="post: 383367" data-attributes="member: 3278"><p>Ya' know, at this point it is 'search for another powerhead' time. </p><p>The crank is not good, remember it is a roller bearing crank. </p><p>Without seeing the piston sides I would say it had water in that cylinder at one point and was left with water in it until cranked. </p><p>Just a guess on my part. </p><p>While off, check the water tube grommets in the adapter that came out with the powerhead and see if they are pushed over, deformed and are blocking water flow. That will tell you more about how the engine had been run as well.</p></blockquote><p></p>
[QUOTE="Pappy, post: 383367, member: 3278"] Ya' know, at this point it is 'search for another powerhead' time. The crank is not good, remember it is a roller bearing crank. Without seeing the piston sides I would say it had water in that cylinder at one point and was left with water in it until cranked. Just a guess on my part. While off, check the water tube grommets in the adapter that came out with the powerhead and see if they are pushed over, deformed and are blocking water flow. That will tell you more about how the engine had been run as well. [/QUOTE]
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Blown piston on a 1990 Johnson 9.9
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