danthemancarolina
Contributing Member
5.7 350 merc iv thunderbolt ignition. 1988 I replaced ignition coil and I still have no spark. How would I trouble shoot the ingnition module (they are expensive). trouble is it worked fine the last time I fired it up. Also the rotor looks fine and i have replaced the sensor about a year ago and it hasnt had hardly any run time. I have checked my grounds and all wire connections look fine. I am getting a 24v reading from the coil. Help please