"My 1979 9.9 has been acting u
"My 1979 9.9 has been acting up for a long time and I've never figured it out; maybe someone can help?
It runs roughly at different times but there is one particular scenario that is always the same: If I accelerate normally it will run smoothly right up to WOT and then begin to run roughly. However, if I then back it off a bit and kind of creep back up to WOT it will often be fine. Sometimes it will begin to run roughly again and I can repeat the process of backing off a bit then creeping back up to WOT. It has new plugs, a carb kit, etc. and it all seems fine. I've fiddled with the synchronization without much luck. I'm guessing I might have a coil problem but that's just a guess, and I don't know how to eliminate that possibilty. Any ideas? Thanks!"
"My 1979 9.9 has been acting up for a long time and I've never figured it out; maybe someone can help?
It runs roughly at different times but there is one particular scenario that is always the same: If I accelerate normally it will run smoothly right up to WOT and then begin to run roughly. However, if I then back it off a bit and kind of creep back up to WOT it will often be fine. Sometimes it will begin to run roughly again and I can repeat the process of backing off a bit then creeping back up to WOT. It has new plugs, a carb kit, etc. and it all seems fine. I've fiddled with the synchronization without much luck. I'm guessing I might have a coil problem but that's just a guess, and I don't know how to eliminate that possibilty. Any ideas? Thanks!"