bankerjohn
Chief Petty Officer
- Joined
- Mar 21, 2008
- Messages
- 444
Re: johnson 9.9 hp coil obselete ????????
Not to beat a dead horse, but are you 100% sure the coil is bad, and not the power pack, plugs, or plug wires?
You said "once it warms up cuts out" ... have you tried comparing the spark you're getting on both plugs when the motor is cold, to the the spark you're getting with the motor warmed up?
Have you tried using a timing light on each plug wire to determine if the flashes are consistent between plugs? Again, when cold, and when hot?
Not to beat a dead horse, but are you 100% sure the coil is bad, and not the power pack, plugs, or plug wires?
You said "once it warms up cuts out" ... have you tried comparing the spark you're getting on both plugs when the motor is cold, to the the spark you're getting with the motor warmed up?
Have you tried using a timing light on each plug wire to determine if the flashes are consistent between plugs? Again, when cold, and when hot?