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  1. S

    Overheating 50 HP 4 stroke

    Alright?. Lets see if you guys can come up with something here we?re missing. 50HP working great. One day starts to overheat at high RPMs Runs like hell?. Alarm goes off. Let it cool and runs great till higher RPM. Okay.. something is screwed up. Lower 2 cylinders running 30-40 higher...
  2. S

    90HP, Merc's 2006, EFI-stalling in low speed

    Morning! Okay, I have 3 of the motors above. One runs PERFECT! The other 2 will stall when you slow down after being on a run. You can slow down fast or slow and it stalls. Seams to stall more after the motor is warm. I have done the following: Used good gas.... no ethanol changed plugs...
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