A
Alan L.
Guest
I have a friend that is very
I have a friend that is very frustrated and I am trying to assist as his bills keep adding up with no solution.It's a 1989 Evinrude 90 hp that typically runs 40 mph at 5200 rpm's.Recently it has been dropping to 4200 while running and sometimes stays there and other times jumps right back to 5200 before doing it again later in the day.It will do this off and on each time he goes out and always down to 4200 area.Compression is excellent and they tried a used powerpack in place of his and there was no change.Plugs also look good.The dealer says the coils are ok and I wondered if a particular coil could act like this when heated up as one possibility.Any suggestions on what else to try or look for would be appreciated.
I have a friend that is very frustrated and I am trying to assist as his bills keep adding up with no solution.It's a 1989 Evinrude 90 hp that typically runs 40 mph at 5200 rpm's.Recently it has been dropping to 4200 while running and sometimes stays there and other times jumps right back to 5200 before doing it again later in the day.It will do this off and on each time he goes out and always down to 4200 area.Compression is excellent and they tried a used powerpack in place of his and there was no change.Plugs also look good.The dealer says the coils are ok and I wondered if a particular coil could act like this when heated up as one possibility.Any suggestions on what else to try or look for would be appreciated.