how do i test for spark
C Chris1956 Supreme Mariner Joined Mar 25, 2004 Messages 27,146 Sep 2, 2012 #2 Re: 1975 Mercury 850 85 hr no spark how do i test Put a spark plug in a boot, hold it to the block and crank the motor, ign on. You should see a nice blue spark. Was that the question?
Re: 1975 Mercury 850 85 hr no spark how do i test Put a spark plug in a boot, hold it to the block and crank the motor, ign on. You should see a nice blue spark. Was that the question?
