My WesterbekeGenerator has developed a slow leak. Pictured is the spot it is leaking from. It is dripping about one drop every 5-8 seconds. It only leaks when the engine is running.
Anyone know what that is or how I might go about fixing it? The little ring around the sensor (or whatever that is with the wires coming out of it) seems to be tight. Is there a little gasket in there maybe? any help would be appreciated.
Thatís either an oil pressure switch or a sender. Itís just screwed into the block with an NPT thread.
Unplug one of the wires and start the engine. If the oil pressure gauge is t working itís the oil pressure sender. If the engine wonít stay running without holding the glow plugs switch (preheat) itís the switch.
It looks like the oil pressure switch. You probably need to replace it altogether. If it's like the one that went on my volvo aux then it's leaking right through the switch - between the brass band and the ceramic core.
Yes +1 what Lodesman said. If it isn't coming out of the thread you need to replace it.
Don't need to buy Westerbekes over-priced replacement if you are on a budget e.g my '96 toyota car is running a Yanmar oil pressure sender I got off a junked block. But might not be worth the bother to you.