Impeller Replacement?

[wakejunky]

I must say one thing about the locataion of the 03' impellors, that is they are a b*tch to change out. The problem is that they are super tight within the housing and the thing just doesn't want to come out. And if you have a v-drive it makes for on the water changes even more difficult, the impellor is down below the muffler. At least in the 04' they went to serpentine belt and relocated the pump on the top of the engine. Then at least you stand a chance of actually getting it out.

Chris

[skinautique]

I will agree they are tough but you can get to them. You have to be really flexible (your body that is)!

[ozarkcountry]

pump impeller for '89 ski nautique 2001

Can anyone tell me the part number for this water pump impeller? Is it something I can purchase at any marine dealers or is it something that must be special ordered?

[Red57Bird]

I must say one thing about the locataion of the 03' impellors, that is they are a b*tch to change out. The problem is that they are super tight within the housing and the thing just doesn't want to come out. And if you have a v-drive it makes for on the water changes even more difficult, the impellor is down below the muffler. At least in the 04' they went to serpentine belt and relocated the pump on the top of the engine. Then at least you stand a chance of actually getting it out.

Chris

Chris - one trick I picked up from another thread was to use two paint can openers to pull the old impeller out. I also use some boot lube as well to help coax it out. First time I replaced it was a chore, but now it isn't so bad. Only thing is that I don't like having to take the pump out of the boat each time.

[east tx skier]

We have pretty silty water around here. I change mine every spring without fail. I have seen people that boat on the same body of water lose his while making a run at a two year impeller change. I regularly used his boat as well. His temp ran right around 160 until it didn't. It climbed fast and, fortunately, the high temp was noticed before any damage was done. We then spent the better part of the afternoon backflushing and pulling little bits of impeller out of the nooks and crannies of the engine. I would have rather him paid $20--$30 so that we could have gone skiing instead or done anything else for that matter.

I change mine in the spring. If I were going to try to make it two years, I would take it out at winterization and store it in a ziploc bag. When you leave them in over the winter, they become pretty well formed to the irregular shape of the pump housing during the long layup and lose a bit of efficiency as water movers as a result.

Again, this is just what I do. The cheap insurance answer is the short one. And I don't miss one bit of the drop in the barrel I have spent on impellers while I have owned inboards. Knock on wood. I have never had one go bad on me and have never backflushed my cooling system when I should have been skiing.

YMMV

[gping43]

is it true that a bad impeller can lead to a louder engine? Took my impeller out today, it looks great. No wear, no signs of damage, but what the heck do I know. Could it still be "bad" without being visibly damaged?

[rhendle]

Looking for a little guidance on the impeller replacement process. I have an 05 sv-211 PCM Excaliber 330 with a surp belt. I've located the pump but am curious if i have to pull the alternator with the pump or is there another way? Can the impeller be replaced while leaving the pump in place? Thanks!

[gdenkman]

If you have ever had that feeling that you were really glad you did something, then you know how I feel. I just hit the 500 hour mark went through the standard maintenance items which included the impeller. The impeller had been changed each season or ever 100 hours, whichever came first, by the PO. This was my first impeller change experience, and based on the condition of this impeller, there is a reason the change schedule is every 100 hours or once per year.

[gdenkman]

I'll try this again.

[Pjoachim]

On my 2001 ski I changed the impeller every season or roughly 150hours. I saw the same thing every year. Cheap maintenance item to protect your engine in my opinion.

[ers906]

Curious why the temp over 160 means that is when you inspect the impeller. Since it is responsible for drawing water into the system, by the time the temperature hits much over 160 then you are already in need of a new one. I would rather deal with potential problems on land, then deal with a certain problem on the water. I change my impeller each season (but that is approx 250-300 hours of engine hours). I also keep a spare on board and have learned to be very flexible when u need to be.

[crobi2]

That impeller looks like it ran dry for a little while at some point. I once saw an outboard impeller that looked like that after the intake got clogged and it ran dry for a few minutes.

The bearings on my 10 year old Sherwood went bad and it was sucking air up the shaft, ran hot and went into limp mode. When I got the impeller out, it still looked perfect i guess because it was still pulling enough water for lubrication, but not quite enough for engine cooling.

EDIT: grammar

[jkallen21]

Where is it located? My dealer did mine last winter but I want to do it myself. 2006 SANTE.

Thanks

[AirTool]

Where is it located? My dealer did mine last winter but I want to do it myself. 2006 SANTE.

Read this entire thread and then PM me.
http://www.planetnautique.com/vb3/sh...-PCM-Excalibur

[solson324]

Thanks everybody on this thread! I just bought a 1990 Ski Nautique this past weekend, and this thread helped me diagnose the impeller as faulty. Boat starts easy and idles great, but would heat up to about 180 F really fast. Would then slowly climb to about 200 while idling. As soon as I get moving the temp would start to drop to around 160. This thread convinced me to order a new impeller, and last night I took apart the old one. Safe to say I found the culprit.

My question now, besides checking lines, should I open up the risers to check for chunks? I checked all lines on the vacuum side of the RWP and they didnt have much, but the line directly on the other side had quite a bit. Thanks in advance.