Twice recently I've found oil in the fuel line for my 2003 Merc 125. This seems to occur after the engine hasn't run for 48 hours or longer. As near as I can tell it's flowing through one or more of the carbs. I suspect that the check valve in the top of the oil reservoir has failed and that as fuel drains back into the tank over time it is siphoning oil back through the system.
Also, to top things off, there is an engine alarm going off. There is oil in the reservoir, the water pump is working well, and the engine block is not hot to the touch. I strongly suspect the oil level sensor failed. It's done this once before.
Two questions:
Any other ideas about oil in the fuel line?
Can the oil level sensor and check valve be replaced on the reservoir or does the entire reservoir assembly need to be replaced?
Thanks folks.
Also, to top things off, there is an engine alarm going off. There is oil in the reservoir, the water pump is working well, and the engine block is not hot to the touch. I strongly suspect the oil level sensor failed. It's done this once before.
Two questions:
Any other ideas about oil in the fuel line?
Can the oil level sensor and check valve be replaced on the reservoir or does the entire reservoir assembly need to be replaced?
Thanks folks.