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hi


You are replying to:
mskyhntr
Posted 4/4/2009 6:33 PM (#370219 - in reply to #370160)
Subject: RE: Engine not running right




Posts: 814


Chances are you have a plugged fuel injector or a gummed up carb, that's why its starving for fuel....the motor is looking for maximum fuel flow and isn't getting it. Do you have a 10 micron filter installed? I had this problem with a yammy 4 stroke. I had the filters and injectors cleaned which had crap in them from junk in the fuel. Now I have no problems and change the 10 micron once a year. Another thing to check is the high pressure fuel pump, the yamaha's have a high pressure and a low pressure pump. Check to see if you merc has the same. Your high pressure pump could be acting up if you have one.

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