Re: 1976 Mercury 65hp 650 thunderbolt ingnition problems please help
Since the trigger made it worse start w/a known good trigger. Ohm the stator and check it carefully for minute cracks indicating possible heat related fractures.
I switched the trigger system out and now i have #1 cylinder only firing, 2 and 3 wont fire.
Use the CDI Troubleshooting Guide to confirm defective parts. http://www.cdielectronics.com/Support.aspx
Fix minor things (replace wear items for preventative maintenance.) that cause major problems before they break.