Hello I have a 2004 Merc 125 SN-OT645864 that I am having some difficulties getting to run correctly. Got it back from winter storage and took it out and found that the motor will not go over 1500 rpm WOT. It is quite weird as the eng doesn't seem to surge it is just a very steady 1500 rpm. I have confirmed spark of all 4 cyl, (changed out the trigger), compression is 120 psi in all cylinders, and confirmed gas is water free. It does not seem to want to idle and will stall but will continue to run if throttle is advanced. Any thoughts / suggestions would be great before I start taring down the carbs.
Thanks
Robert