How old are your manifolds/risers? Either a clogged riser or manifold on
that bank, or the water pump isn't pumping enough volume to reach both
risers.Hot riser= no coolant flow. You need to find out before running
it again. See:
http://www.seanet.com/~jasonrnorth/mceo1.html
For an in depth look at what happens when a manifold fails.
JR


Matt wrote:
Hi,

I have a 94' Chaparral w/a 5.7L Mercruiser 350MAG. Looking for some
advice on pinpointing a problem. Here's the story:

Last year everything was running fine. Beginning of this season i had
the outdrive/impeller serviced. After dropping it in the water i
noticed that one Riser gets extremely hot. This is def not the norm.
The temp is constant at 160 (thermostat setting). I took off the entire
thermostat housing (everything was fine), replaced the thermostat, took
off the Riser (everything fine), checked the exhaust flaps (everything
fine), and all hoses looked good. I can't figure out what could be the
problem. My two thoughts, either something happened over the course of
the winter, but what? or when the marina serviced the outdrive something
got screwed up. but if it was an water intake problem wouldn't both
risers get really hot?

Any help troubleshooting is greatly appreciated.

Thanks!!



--
--------------------------------------------------------------
Home Page: http://www.seanet.com/~jasonrnorth