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  1. R

    continuous alarm 4.3 Merc

    I have a 2006 Mercruiser 4.3. the motor alarm recently started going off. it starts when +3500 rpm and I'm on plane @ 20-30 mph. goes away when I slow to 2000 or so rpm Temperature (by indicator) goes from 120 @ start to ~ 170F and holds. Oil pressure goes from 40 psi @ idle to 60 @ +3500...
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