On Jun 3, 2:33*pm, J wrote:
I have a 2000 four winns 230 hrizon, and i am having an issue with it
over heating. I hooked it up to a manual temp gauge and it is running
around 230. I have checked everything i can think to check. we pulled
the impeller off the fresh water pump that pulls the lake water into
the engine and this rubber gear is in perfect shape. We pulled the
pump off the front of the engine and everything appears to be ok
there. We pulled off each individual cooling hose and checked for
blockage and there was nothing to be seen. Can someone please give me
some suggestions as to where I can look next to fix this over heating
problem. I even ran water backwartds out of the outdrive to check for
blockage and there appeared to be none.
THanks in advance
Justin

Justin, not sure what engine or outdrive you have, but ....

if the engine has overheated then there is a possability that you may
have compromised a head gasket. It may seem to run fine but still ....


There are a lot of things to consider. Does the engine start easy or
does it crank and "hit hard" on comression? if so that could be that
the engine distributor is out of time, but that would be doubteful.

This isnt' an indacator, without running a compression test, but did
you find any water in the oil? and if you have the main engine water
pump off or a main radiator hose pulled loose, does it smell like
engine exhaust inside the block or hoses? Those can be some indicators
as well.


If you run a compression test on the engine, and you find abnormally
low compression on a cylinder or two (especialy on the same bank, that
is if it is a v-6 or 8) I'd be suspect of a faulty headgasket.


I take it your engine is fresh water cooled only and the water doesn't
run though a heat exchanger?