Water impeller broke apart where do the pieces go?

Check upstream at the water pump inlet hose. When this happened to me, most of the broken vanes were found there.

SkiDim.com may have your thermostat.

Crmaverick wrote: bfootr wrote: Check upstream at the water pump inlet hose. When this happened to me, most of the broken vanes were found there. SkiDim.com may have your thermostat. Is that the hose that feeds into the impeller, from the water intake on the bottom of to boat?

That's the hose he's talking about. If you unhook both ends and flush it, you'll be sure nothing remains

Don't stop with the inlet hose, pull all the hoses on the discharge side too and check/flush them and also the inlets to the exhaust manifolds, the thermostat housing, and the inlet to the circulating water pump.

Most times they don't end up internally in the engine blocking water passages,

KENO wrote: Crmaverick wrote: bfootr wrote: Check upstream at the water pump inlet hose. When this happened to me, most of the broken vanes were found there. SkiDim.com may have your thermostat. Is that the hose that feeds into the impeller, from the water intake on the bottom of to boat? That's the hose he's talking about. If you unhook both ends and flush it, you'll be sure nothing remains Don't stop with the inlet hose, pull all the hoses on the discharge side too and check/flush them and also the inlets to the exhaust manifolds, the thermostat housing, and the inlet to the circulating water pump. Most times they don't end up internally in the engine blocking water passages,

Do you know where I can find a thermostat for this motor ? 84 pcm 454

I'd say bfootr meant the inlet hose to the RWP based on a previous discussion in a recent thread,

If you look at how the pump is built, it should be pretty easy to see that as vanes are coming apart and the pump isn't doing any sucking, the suction is a pretty easy place for pieces to land and get stuck and not found if you don't look there .   

The drawing below might help

Jonny Quest wrote: It is very easy to install the raw water pump upside-down (backward). That would be my first guess. The plagiarized picture below can help: JQ

KENO wrote: I'd say bfootr meant the inlet hose to the RWP based on a previous discussion in a recent thread, If you look at how the pump is built, it should be pretty easy to see that as vanes are coming apart and the pump isn't doing any sucking, the suction is a pretty easy place for pieces to land and get stuck and not found if you don't look there .    The drawing below might help Jonny Quest wrote: It is very easy to install the raw water pump upside-down (backward). That would be my first guess. The plagiarized picture below can help: JQ

I’ll double check that diagram when I get back.

So far I’ve flushed every hose, found one more piece under the trans cooler. I found some in thermostat , I shined a light into the intake to the left and right of thermostat. I can see some bits down there I need to fish out. Does that mean I’m screwed and have pieces clogging up in the heads?

KENO wrote: Crmaverick wrote: So far I’ve flushed every hose, found one more piece under the trans cooler. I found some in thermostat , I shined a light into the intake to the left and right of thermostat. I can see some bits down there I need to fish out. Does that mean I’m screwed and have pieces clogging up in the heads? Probably not A picture would be helpful. Regardless of whether you think you're screwed, I'd put things back together and run it and check temperatures before jumping to any conclusions

Here’s pics of inside intake next to thermostat

https://drive.google.com/file/d/1BDe3HhN6AF8AA2YFwrPBK9ZufrGPjoha/view?usp=drivesdkhttps://drive.google.com/file/d/1BDe3HhN6AF8AA2YFwrPBK9ZufrGPjoha/view?usp=drivesdk


https://drive.google.com/file/d/1sfJq4Y2mR_6XratpoHaB8zAVeezilJlK/view?usp=drivesdk

Got it back up and running, seems to be running cool enough on the hose.

I also drained my oil yesterday and found about a quart of fuel in the oil. My fault for not disconnecting the throttle control when I was rebuilding and testing the control.
Motor was only run 15 min on the hose with fuel in the oil, would that likely damage bearings or ruin the cylinder walls? Oil was pretty watery, I’d like to think I just gave it a nice internal flush/ cleaning haha

Hey Guys - have the same impeller issue so that's for the insight.. In testing my transmission (separate thread) I noticed some smoke at the pump outlet hose...and very little water coming from the exhaust. Shut down immediately but alarmed at the condition of the impeller. Flushed hoses etc to find the pieces and fairly certain I've cleaned the debris, but my question is about the fit of the replacement impeller. Based on my engine (PMC302) with a sherwood pump, I bought the proper impeller from SkiDim... but it fits VERY snug, and "crushes" against the cam, leading me to wonder how tight is too tight?   Does this look okay?

Also - noticed some fluid in the bilge (in addition to a bit of water). It's peanut butter brown... is this oil?   Haven't noticed until today when taking apart the pump.

Here's a few pics... love any insight.   Thanks guys - Eric

looks like we both need to better recognize failing impellers!

Thanks Pete.

And yea, I'm afraid of that for sure. The oil scares me... will reinstall the impeller (thanks for confirm) tomorrow and replace thermostat which I think may be bad... and see what happens. Fun times!

Thanks guys - Eric
.

wipe some dish soap on the new impeller before install. It allows you to spin it into place with very little drag. Makes the install a snap.   The soap will wash out as soon as you start the engine so no risk at all just a lot less work putting the new impeller in.
Soap does not age the rubber. Any oil or grease product can damage the rubber so soap is a good option.

edamario wrote: 1989:     Found most of the pieces in the hose from the fresh water intake to the block. .

Between the trans cooler and RWP?