Mercruiser 3.0 engine "popping" noise and loss of power and valves clacking?
R rosie1 Recruit Joined Jun 11, 2013 Messages 3 Feb 28, 2015 #1 Mercruiser 3.0 engine "popping" noise and loss of power and valves clacking?
Bondo Moderator Staff member Joined Apr 17, 2002 Messages 70,525 Feb 28, 2015 #2 Ayuh,.... Welcome Aboard,..... Sounds like detonation from a lean condition or bad timin',...
Fun Times Moderator Staff member Joined May 16, 2009 Messages 8,808 Feb 28, 2015 #3 What year engine is it? Engine serial number handy? What RPM range do you hear all this at? Have you pulled the spark plugs to see if there is any type of damage? Performing a cylinder compression and leak down test might help let you know something too. Has the ignition timing been moved at all recently?
What year engine is it? Engine serial number handy? What RPM range do you hear all this at? Have you pulled the spark plugs to see if there is any type of damage? Performing a cylinder compression and leak down test might help let you know something too. Has the ignition timing been moved at all recently?
