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    1987 2.5L Mercruiser inboard/outboard

    Hm okay, I'll definitely look into the fuel. I filled it up at a gas station with octane 87, I heard it's okay to run mercruiser engines on that fuel but it's bad to let it sit. I live in Ontario, Canada and basically everywhere here the fuel has up to 10% ethanol. Do you think fuel stabilizer...
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    1987 2.5L Mercruiser inboard/outboard

    The thing is I filled the boat up with fresh gas yesterday, I ran through half a tank of it. The engine wasn't running rough or anything it idled and accelerated like usual. I do have a brand new fuel/water separator that i have installed about a week ago, I've removed it yesterday to see signs...
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    1987 2.5L Mercruiser inboard/outboard

    Hi everyone, new here. Also a new boat owner. So I took out my boat, it has a 1987 Mercruiser 4 cylinder inboard engine. I took it out yesterday and drove it for about 45 minutes straight no stopping, was on plane cruising at around 2500ish RPM. I then started to feel and hear my engine slowly...
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