Complete impeller failure advise needed

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   Just purchased a 2003 Air Nautique w/ PCM 5.7/ Excalibur 330. 
I swapped out the impeller just to be safe and the old one wa as 98% gone. There was half of 2 blades left. I swapped out the impeller and went to warm up the engine with a flush buddy and noticed I wasn't getting water out of the exhaust. I pulled the thermostat housing and found a fin lodged in it. I've had to order gaskets so I'm just waiting now.

My question, should I be worried about the remaining fins? Should I pull the exhaust risers? Any advise is appreciated.

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03AirNautique Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: April-22-2022 Location: Birmingham Status: Offline Points: 2	Post Options Post Reply Quote 03AirNautique Report Post Thanks(0) Quote Reply Topic: Complete impeller failure advise needed Posted: April-22-2022 at 7:15pm
	Just purchased a 2003 Air Nautique w/ PCM 5.7/ Excalibur 330. I swapped out the impeller just to be safe and the old one wa as 98% gone. There was half of 2 blades left. I swapped out the impeller and went to warm up the engine with a flush buddy and noticed I wasn't getting water out of the exhaust. I pulled the thermostat housing and found a fin lodged in it. I've had to order gaskets so I'm just waiting now. My question, should I be worried about the remaining fins? Should I pull the exhaust risers? Any advise is appreciated.
	2003 Air Nautique- Excalibur 330/5.7 Vortec

MrMcD Members Profile Send Private Message Find Members Posts Add to Buddy List Grand Poobah Joined: January-28-2014 Location: Folsom, CA Status: Offline Points: 3750	Post Options Post Reply Quote MrMcD Report Post Thanks(0) Quote Reply Posted: April-22-2022 at 9:20pm
	First, Sorry, you are not the first to go down this road. Your old impeller pieces are plugging your cooling system. Remove your hoses at the thermostat and at your exhaust manifolds and probe backwards through each hose. You should be able to recover enough parts to put the old impeller back together. Small pieces may flush out but big pieces plug the hoses and inlets and will cause overheat issues. At least you are working on this at home. We have had to fix similar issues out on the lake when we were on a 4 day ski trip. Words of advice, if your impeller is 2 years old, change it before year 3 and you will never have this issue again. Mark

Jonny Quest Members Profile Send Private Message Find Members Posts Add to Buddy List Grand Poobah Joined: August-20-2013 Location: Utah--via Texas Status: Offline Points: 2979	Post Options Post Reply Quote Jonny Quest Report Post Thanks(0) Quote Reply Posted: April-22-2022 at 10:14pm
	I used to change several wear parts every year: impeller, spark plugs, FCC filter, underwear, etc.. I eventually decided to modify my P.M. plan to every 2 years. Tomorrow is swapping parts day at the Quest compound. JQ
	Current 2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum

Complete impeller failure advise needed

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