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Old 05-27-2008, 10:39 PM
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Cool De-Winterization Problems...


I am a complete newby here, and hoping that some of you experts can give me a clue!

I have a 1996 Mastercraft Maristar 225 with the LT-1 Corvette engine. It was winterized last fall, and de-winterized this spring, and now when cranked, it makes an unfamiliar noise that almost sounds like somewhat of a sucking noise. I am wondering if anyone has an idea of what this might be...

I keep hearing that it could be the impeller - where is the impeller in this boat, and where do you hook up the garden hose to run it on a hose out of the lake?

Any help and tips would be much appreciated THANKS!!
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Old 05-28-2008, 09:59 AM
east tx skier's Avatar
east tx skier east tx skier is offline
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Join Date: Jul 2004
Boat: 1998 Ski Nautique
Location: End of my rope.
Posts: 26,185
If it is an impeller problem, I'd suggest running it off a bucket fed by a hose rather than just stuffing the hose in the raw water line. That will let you see first hand if your impeller is drawing water efficiently.

To run your boat on a bucket, get a 5 gallon bucket and set it on the port side of the motorbox. Remove the raw water hose from the thru hull fitting (aft of the engine) and stick it in the bucket. Fill the bucket about 3/4 full and crank the engine. If you can't get your rw hose off the thru hull fitting, you can get some flexible pvc hose (1.25" ID) and attach one end to the hull side of the transmission cooler (lower port side of the engine along rw hose---little black cylinder with tapered ends) and drop the other end of the hose in the bucket. I had a pretty stubborn thru hull fitting, so the latter method was the one I always used. Make sure you put a hose clamp on that pvc hose so it doesn't leak.

I have no idea what the sucking noise is.
Previous: 1993 Prostar 205

Red 1998 Ski Nautique, PCM GT40, 310 hp, , Acme 4 blade, Perfect Pass SG/Zbox.


Be kind. Have fun.
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de-winterization, mastercraft lt-1, noise

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