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2008 mercury optimax 150hp alarm.

Layinlow

New member
Hello,
So I bought this boat afew days ago a 2006 crestliner 2485lsi with a 2008 mercury optimax 150hp. When I went to look at it he had it on muffs and it fired right up. Seemed fine I bought it and went to the river 2.5 hours away from the seller. Boats starts up and idles fine. When easing into the throttle to get on plan about 3000rpms a continuous beeping alarm goes off and puts it into guardian mode. If I back to neutral alarm goes off sometimes. Other times I have to turn the key off, and back on. Water is coming out of the tell tale. Sometimes if i got to full throttle it will go to 5200 rpms with no alarm until i slow down the alarm goes off. I filled oil tank and under cowl resovior. Oil does seep out when losing the cap. Checked gas tank for water by filling a quart jar. Took it to a shop and they thought my prop was wrong and changed it from a 12 to a 15 thinking it was over revving. That only changed max rpms from 5200 to 4700. Any help would be appreciated

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