Who said anything about removing the intake manifold? If you re-read the reply,
the words before "manifold" are "water distribution".

Wildest Dream wrote:

http://216.37.204.206/Actionsports/O...pe=13&A=11&B=6 hear
is a parts diagram the thermostate is #56 $15.99 . the only ring I see
below it is an o-ring looks to me as if it pops up or screws out. My book
don't go into any real detail, all it tells u is to drain the system, (Seloc
8-15 in the 1985 to 1995 OMC Cobra & King Cobra stern drive manual). I don't
see how taking the intake manifold off will help much just to turn it upside
down and hope it falls out, seams like alot of work to me. Of course I never
replaced one in a boat but I would still try to pry it out insted of going
through all that trouble. If its in a well then try some c-clip plyers, if
not just pry it up with a screw driver. it may be garbage when u get it out
but a new one that looks to just drop in @ only $16 is insurance enough for
me. But then again it isn't my boat. Good luck.

"Jim" wrote in message
om...
I took my '88 4.3L out for a cruise today before storing it and had
overheating problems. So I brought it home and hooked it up to the
flusher. If I pull the inlet hose on the thermostat housing there is
water when it's running. So I pulled the thermostat housing expecting
to find a thermostat in the intake manifold, but there isn't one
there. Rather there seems to be one built into the housing that can't
be changed? I must be missing something, right?