sounds like time to look for a motor. i would guess you hurt the rings, pistons and bearings in the motor. a compression test will tell but i would say you lost the motor due to oil injection, that's another reason not to run it. if it's in the gas and pre mixed you know as long as you have gas you have oil.
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1978 V20 Cuddy w/ 225 Johnson. And Several other boat's
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