TriLakes boater
Cadet
- Joined
- Mar 26, 2019
- Messages
- 6
I have a 1999 deck boat with a GM 4.3 liter motor and Volvo Penta outdrive. Lately, my water temp has been higher than normal. Last year it would peg around 175, but this year it is a little higher and has come close to 250 before going back down. My immediate thought is replace the thermostat as it sounds like it is sticking. It seems to be worse if the boat is idling in the water. There is no grease indicating a water pump failing.