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Engine revs up, but only goes Idle speed

1811 Views 6 Replies 4 Participants Last post by  Away Point
Yesterday while coming off the water we were going at full throttle (200hp Merc outboard) and all of a sudden the boat bogged down and only continued at idle speed. When pushing the throttle down, the engine revs up regularly, but the prop only spins at idle speed. It happened out of no where, while we were on plane. Can someone give me some advice as to what happened and what I need to do now?

Anyone mechanical enough to help fix it? or will I be going to a mechanic?
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Any chance you might have hit something? Sounds like maybe a shear pin on the prop?
If the engine seems to run normally and you have both forward and reverse, I'd start there first.
QUOTE(Big Dog @ Jun 27 2009, 09:40 AM) <{POST_SNAPBACK}>Any chance you might have hit something? Sounds like maybe a shear pin on the prop?
If the engine seems to run normally and you have both forward and reverse, I'd start there first.

I don't think that I hit anything. No one on the boat heard or felt anything. It does operate normally in forwards and backwards. I'm gonna go to the marina right now to take a look at it. Hopefully it's not too much $$$$!!
If anyone has any ideas and thinks they can help give me a call 810-602-8904. I'm at a marina off Jefferson, right near Sugarbush. I could repay you with a few fishing trips or some $$ (probably a lot cheaper than what the repair guy at the marina would charge).
It sounds like you spun the hub on the prop. On my I/O the newer props have a replaceable hub. The older ones had a rubber hub.

Flo-Torq Hub Kit

Matt
Thanks guys. Yeah the guy at the repair shop at the marina said that he is almost 100% sure that the prop was spun. He took it off to looked at it and said that it was. He gave me a size 23 for the weekend to use until Monday when he can get a 21 in. I took it out for a quick ride and it does accelerate and plane out. The engine still feels a bit funny (like its slipping), but the guy said that it might do that because of the prop being a different size. I guess I'll just wait till Monday and see if a new prop replacement does the job.

Thanks again....I thought I was looking at a pricey repair job, hopefully this will fix it.

Jess
Cheap fixes are the best, a lot better than a complete lower end. Been there, done that
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QUOTE(Big Dog @ Jun 27 2009, 05:24 PM) <{POST_SNAPBACK}>Cheap fixes are the best, a lot better than a complete lower end. Been there, done that

Amen to that!
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