Anyone know how to test the ignition coils on a 1991 Johnson 60hp? My engine stumbles when running. I have replaced the fuel filter and plugs with no improvement. Any ideas?
My 1991 60hp Johnson has begun to misfire. It started about 3 weeks ago. I have replaced the spark plugs, but no improvement. It starts and idles fine, but when I get up to about 20 or 25mph, the misfiring begins. Any help is greatly appreciated.
