I have a yamaha 40VETO 2 stroke (approx 2000 model) 200 hrs, full service history. This week, motor seemed to be missing occasionally with cough. Full throttle only managed 4500 revs, usually 5500. Maintaining FULL THROTTLE, revs slowly reduced to 3000 and losing power. At 3000 it coughed a few times, fluctuated up & down between 3000-4000 revs. Then after 10 minutes of this, it kicked in back up to 5500 normal full revs! Any ideas why? This is the 2nd trip this has happened. Could this be the CDI unit (electrical).
Previous day, motor would stop when in neutral position, and when restart would run 2-3 seconds then snuff out numerous times. Fuel and spark checked and no issues.
Any thoughts/suggestions?? Thanks in advance
Previous day, motor would stop when in neutral position, and when restart would run 2-3 seconds then snuff out numerous times. Fuel and spark checked and no issues.
Any thoughts/suggestions?? Thanks in advance
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