Just wondering if anyone has had any trouble with or had to replace a cdi unit.
I have a 2 stroke 90hp Yamaha and had the 100hour service done today.
The mech wasnt happy with the motor at idle. Sometimes, not always, the motor seems to running on 2 cylinders at cold start.
So we went for a run off Wello this arvo. Cold start was fine and idled perfect.
Got to the end of the beacons, 2minutes run, and the mech says, turn it off and restart. Restart, runs, stops after 3 seconds. Did this 5 times untill the mech took the cover off , took the lever off the cdi and manually advanced something.
Fired up and kept on running,,, and didnt do it again. After a lot of starts.
Also, if you take 1 of the plug leads off at idle, the revs increase.
The cdi unit apparently controls everything to do with the motor.
Maybe one of the sensors is stuffed.
Has anyone had any of the above problems or had to replace the cdi unit .