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  1. W

    1999 90Hp Yamaha no spark at center cylinder at idle

    All 3 coils all same resistance low and high voltage. CDI unit same resistance on each black white wire to ground, and yet no spark at idle on center cylinder. Any suggestions would be greatly appreciated. The water leak on earlier post still appears ok. Thanks for looking.
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    Poor decision on a faulty engine or?

    Re: Poor decision on a faulty engine or? I will take the answers to my question last to first. To 99yam40, the block was checked prior to welding with machinists straight edge and .0005 feeler gauge, and it was straight. My wallet may not be as thick as yours so I decided to try this method...
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    Poor decision on a faulty engine or?

    Have a chance to purchase a 4 year old Yammy 90 for $500 Have invested $200 so far to try and recover engine. The problem initially was a crack at the lower right water jacket. I had a shop repair the crack and doing so has caused an uneven deck surface. I have reassembled engine but the surface...
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