Impeller change issue

[pyro225]

Hi all just dropped the box and changed the impeller on my new to me mariner 55 - I went to take the old one out and there were no blades at all, it was getting dark so I shook the box upside down but couldn't find any shredded blades - could this be a problem it's back together now as needed to do when light

 

[Mi duckdown]

That is a BIG problem. Need to find where all those vanes went.

 

[roscoe]

Likely went into the powerhead one at a time, until there was no more water flow to carry them.

 

[pyro225]

Thanks hey roscoe if that's the case is that bad news? Won't it mash them up and carry on? Where do they usually go?

 

[GA_Boater]

I pulled impeller blades out of the pump intake below the impeller once. If the new impeller sucks stronger, those chunks could take all the blades off the new impeller.

I think you will be dropping the lower to check the water tube and to do some reverse flushing.

 

[pyro225]

Is that where they normall end up? In the pre impeller water intake? Where else?
Bit paranoid now but on a Merc 50 last year did the same thing and was missing all the vanes- I foundall but one or two of them and assumed it would be ok I've been on it a few short times now probably done about 12 miles no real issues - how long until you'd expect a problem if there were to be one likely?

 

[GA_Boater]

Is that where they normall end up? In the pre impeller water intake? Where else?
Bit paranoid now but on a Merc 50 last year did the same thing and was missing all the vanes- I foundall but one or two of them and assumed it would be ok I've been on it a few short times now probably done about 12 miles no real issues - how long until you'd expect a problem if there were to be one likely?

Anywhere in the cooling system. Try to find all the pieces.

 

[pyro225]

Sondp they ever just disintegrate or work there way out?

Treatme as an idiot - I can clean carbs do impellers and gear oil that's about it - so on a Merc 50 and mariner 55 what constitutes the cooling system ? And how do I get to it all - sorry for stupid questions!

 

[quicktach]

You must get rid of the bits and pieces of impeller. If you are not handy with this, take it to a shop. Probing and pressure flushing are needed and should be done by a mechanic who's familiar with the engine.