76 9.9 Evinrude.
Wield problem...going out plane the boat Okay, fish a bit on the way back felt like 2/3 of the power and can't plane anymore.
if unload some weight from boat tried again, it goes back to the same top speed.
brand new impeller and NGK 7BHS plugs. compression 112/114. Tested spark looks like top cylinder got less spark (jumps shorter compare to the one lower) and the top cylinder runs 200~300 rpm less than the lower cylinder.
checked 76 is the last model uses points and condenser. could this be something to do with the aged condenser/points so that the top cylinder misfire from time to time?? is it normal that one cylinder runs less RPM then the other?
Wield problem...going out plane the boat Okay, fish a bit on the way back felt like 2/3 of the power and can't plane anymore.
if unload some weight from boat tried again, it goes back to the same top speed.
brand new impeller and NGK 7BHS plugs. compression 112/114. Tested spark looks like top cylinder got less spark (jumps shorter compare to the one lower) and the top cylinder runs 200~300 rpm less than the lower cylinder.
checked 76 is the last model uses points and condenser. could this be something to do with the aged condenser/points so that the top cylinder misfire from time to time?? is it normal that one cylinder runs less RPM then the other?