" JimH" jimhUNDERSCOREosudad@yahooDOTcom wrote in message
. ..

We ended up leaving the boat with our mechanic and spent the day on our
friends boat. After 3 or so hours I got a call from the marina, telling
me they checked out the engine (after letting it cool) and judge it to be
OK, although the impeller needs replacing. They said I could safely move
the boat to my slip if I wanted to until repairs are made.

We got back to the marina later today and I took the boat from the gas
dock to our slip, with the temperature rising to 220F during that short
trip from the gas dock to our slip (5 minutes). The boat also ran very
rough during that short trip

So.......besides replacing the impellor any other suggestions on what I
should ask the marina to do? What is causing the rough engine, especially
after having a tune up only 4 engine hours ago? Is there some internal
damage I may have done?

Single 1997 Volvo Penta 4.3L, Chevy 190 HP.

TIA for your answers.



I would not panic yet. One of my first boats overheated one day as I left
the harbor heading for England.
Temp rose to 260 degrees. I putt-putted back to the slip and JiminFl came
to the rescue. He determined that my old manifolds were shot and replaced
them with new ones of an updated design. The boat ran fine after that.
Different engine, I realize (350 Chevy), but the first step would be to
replace the impellor and see how it goes.
You might get lucky.

Eisboch