waybomb
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  • We test ran with 93 and 1/2 pint outboard oil and got the power back BUT developed a hi rpm under load knock from either 6 or 8 .Raise the idle slowly up to 5 k and you dont hear it, raise it quickly no load and it clanks.As little as 4 deg makes it disappear no load.customer said it happened powering up . Will have a update as soon as I get it to take apart AGAIN.
    Ed
    tech ? do you run alcohol fuel .got a 5.7 that I built and have 10 hrs on it. First time cust tried to power up after a few hours of break-in reported popping and backfiring. no carbon on the plugs or in the engine, cylinder walls appear to be washed clean of oil.all 8 plugs show as dried clay color,definitely not carbon color.
    Ed
    Got a cell?
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