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Hello Ive got a 1990 120 looper that I rebuilt and it has a little cough at idle. Just a bit of history I originally broke a seal ring and totaled the power head. I found one on Ebay and put in some new seal rings and one new piston and all new piston rings. Took it out for a run and it ran...
Im looking for any ideas to why a seal ring on my crank came apart which wiped out my block. after tear down I found the only problem was the seal ring on the crank. I rebuilt this engine 8 years ago and will try to attach a link to that thread from 8 years ago to give a little history...
