"Harry Krause" wrote in message
. ..
Jim wrote:
"Harry Krause" wrote in message
. ..
JimH wrote:
1997 43.L Chevy 350 6 cylinder. Freshwater. Manifolds and risers are
original.

Tuned up just weeks ago with only 4.2 hours on the engine following the
tune-up.

Thermostat was replaced in spring.


I wonder if your tune-up guys pooched something and didn't tell you.
Not likely. More likely a scenario like this: Plastic bag gets sucked up
against water intake. Water is restricted or cut off completely. Engine
overheats and water pump fries. Engine shuts down or is shut down and
plastic bag slips away. After inspecting the water pump, mechanic
suggests that the owner ran the engine without water. Owner suggests to
mechanic that he should have seen that the water pump was on it's last
legs when he inspected it. (Write your own ending to this story)
Jim


Well, I keep reading about "impeller failure," but I dunno about that. Jim
boats on a freshwater lake. Bags, yes, but sand, sandbars, and the usual
crud one finds in coastal waters? Probably not.

Could have been a loose belt; but Jim would have found that.
Could have been a plugged manifold or riser but overheating would not have
been sudden. Also manifolds and risers run in fresh water tend to last a lot
longer.

What do you think might have been pooched and cause a failure 4 hobbs hours
later?
Jim