Hello, I'm troubleshooting my gauges after both oil press and water temp pegged high during our last outing. Slowing brought both down (all of a sudden) and speeding made them peg again suddenly (and they wouldn't come down again). We were close to the slip so we didn't run long like this.
This is a new boat for me and my first inboard/diesel, a 1986 Pearson 303.
I just finished re-doing the connections at the gauges. Oil reads 20psi when system is off and 40psi when engine is running. My water temp gauge sits at about 165F when the system is off (battery switch is off as well). When I start the engine the temp pegs low at 100F. I sat there for over 5 min running the engine but the needle never moved. I don't know what to think. I put my hand on top of the heat exchanger afterwards and it wasn't too warm to touch, barely hot. Probably 105F if I had to guess. How long is long enough to see temperature rise? I'm thinking of closing the raw water seacock for testing. Advice?
This is a new boat for me and my first inboard/diesel, a 1986 Pearson 303.
I just finished re-doing the connections at the gauges. Oil reads 20psi when system is off and 40psi when engine is running. My water temp gauge sits at about 165F when the system is off (battery switch is off as well). When I start the engine the temp pegs low at 100F. I sat there for over 5 min running the engine but the needle never moved. I don't know what to think. I put my hand on top of the heat exchanger afterwards and it wasn't too warm to touch, barely hot. Probably 105F if I had to guess. How long is long enough to see temperature rise? I'm thinking of closing the raw water seacock for testing. Advice?