AussieRon
New Member
- Jan 12, 2016
- 19
- Boat Info
- Whittley Monterey 2002 model
- Engines
- Mercruiser 4.3 mpi 2002 Alpha stern drive Smartcraft fitted
G'day folks, I have a 2001 Sea Ray 260 Sundancer with a Mercruiser 5.7 and Bravo 3 leg. The engine is over heating when on the plane at around 3000 rpm. At slow speeds at around 6 knots the temp gauge sits on 170 deg and seems ok. So I took the boat out of the water to antifoul it and get the Bravo 3 serviced. The Manifolds and Risers needed replacing so new ones were fitted. The mechanic also replaced the water pump impellor and said the thermostat looked ok. I took it for a test run today and the temp went up to 170 at 6 knots then on the plane at 3000 rpm the temp gauge started rising same as before so I dropped back to 6 knots before the overheat buzzer sounded. So talking to another mechanic he said it could be the Thermostat or a water restriction at the inner transom plate were the raw water comes in to cool the engine. Has anyone had issues with the inner Transom plate water inlet ? Mechanic said engine would need to be removed to fix.
Any other suggestions welcome.
Cheers
Ron.
Any other suggestions welcome.
Cheers
Ron.