1986 100hp Johnson saga
My quest to get this motor running is still on going now waiting for 2 new
powerpacks to come in tomorrow. As directed from the group I did a compression test and all cylinders are equal around 105 to 110 pounds. Next I did a spark gap check with a home made tester. It showed a good spark on all four cylinders and it was a big hit with my boys as they both had to take turns turning over the motor to see it spark. When I indexed the flywheel for the TDC of all four pistons and checked for the proper firing with an induction type timing light the problem was in a double firing power pack. With the timing light on cylinder one I saw cylinder III firing and also switching to cylinder III I also had cylinder III firing. To isolate this from the charging coil and timerbase I swapped powerpacks and the problem followed the bad powerpack! I had just used hash marks II and IIII on the flywheel for the other side and with the double firing it looked like II IIII thinking I had a six cylinder motor for a minute there. Even though the powerpacks cost $100.00 it was much better than the $500.00 it would be to replace the stator and timerbase on this motor. I order two powerpacks so that hopefully I'll have a dependable motor after I install these powerpacks. I'll keep the old good one as a spare. Thanks to the group for all the help Mick |
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