Having misfire codes. During the past two years I've changed the wires plugs n coils two times and cylinder #1 three times and did it two weeks ago. Now today I get misfire on cylinder #1 and #6 wth! I changed the plugs and still runs rough. What can be causing the misfires. I love old Betsy help lol.

 

assuming you have spark with the new plugs and coils, got to check fuel and compression next