charlie boswell
Recruit
- Joined
- Oct 25, 2008
- Messages
- 1
I have a 1990 50 hp yamaha jet, 110 psi top 2 cyls 105 on bottom, carbs cleaned, new plugs and gapped, strong spark on all 3 cyls, idles ok, boggy out of the hole, +_ 3000 rpm @ full throttle and jerky. while @ idle pull top 2 plug wires and motor sputters, but when i pull the bottom plug wire, no change in idle, if i put the middle plug wire on the bottom cyl plug while idling, same no change in idle.i put all plug wires back right then i sprayed fuel in the bottom carb while idleing, still little chang actually only bogs slightly. the last thing i can think it may be is the ignition module on the side of the motor, but new one is $500. expensive. can i have this module tested somehow, or does anyone have any other ideas? thanks