Not always, sometimes it comes un-glued and slips, sometimes the blades
curl, sometimes it breaks up just a little. In these cases it might pump but
not enough.

You could have a water pressure problem at your sillcock. Running it in the
lake will let you know if that was the case. Some of these guys have a
pressure equalizing ball assembly that makes sure each riser and or manifold
gets the same water flow.

When you get an overheat like this, the adapter in the upper gearcase that
holds the copper waterpump tube likes to melt down. You need to check this
when you are serviceing the water pump.

"oelf92" wrote in message
...
Also when the impeller goes does it go completely??? I plan on dropping
it in the lake today to test it.... any suggestions???


"Jim" wrote in message
ink.net...

"oelf92" wrote in message
news
I have a 94' Mercruise 5.7L V8... I haven't run it in about 3 weeks and
when i started it up today on the hose with the muffs, there was steam
coming from the exhaust. (This has never happened before on the hose)
Also the one exhuast elbow was getting warm... I replaced both manifold
and elbows last year, both exhuast flaps, and the impeller was done about
1 year ago.... Can anyone recommend a trouble shooting list....

Thanks!




Sounds like the impeller is shot. Was there any water coming out the
back?