help please, I have a 50hp Merc. 4 cyl. that only the top 2 plugs are firing. What could cause this?
K kevans Recruit Joined Mar 21, 2010 Messages 2 Mar 21, 2010 #1 help please, I have a 50hp Merc. 4 cyl. that only the top 2 plugs are firing. What could cause this?
achris More fish than mountain goat Joined May 19, 2004 Messages 27,468 Mar 21, 2010 #2 Re: only 2 plugs getting fire Either a faulty trigger (most likely), a faulty switchbox or 2 faulty coils (less likely). Read THIS thread for troubleshooting methods. Chris..........
Re: only 2 plugs getting fire Either a faulty trigger (most likely), a faulty switchbox or 2 faulty coils (less likely). Read THIS thread for troubleshooting methods. Chris..........
