got a 50hp 1970s vro has been changed to premix changed fuel pump all hoses, runs great with earmuffs in driveway but on water pushing boat only just above trolling speed any ideas?
There was no VRO in the 1970's models.----First one were 1985 or so.-----Model # or some pictures of your motor.-----First step in trouble shooting is a compression test , post your numbers.-----Or motor is running on just 1 cylinder !
