Re: 1988 johnson 60 HP 3 cylinder nocking sound
Need much more information to make a reasonable statement. Exactly what does the "knocking" sound really sound like. Is it a hard loud knock, or a subtle sound..? Does the sound stop as the RPMs are raised, or does the noise drown it out? Does it happen in gear or neutral? So many other questions to ask about the "knock" sound to give any quality suggestions...post more info!