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Ian21401 · Jul 13th, 2019, 11:37

OP mentioned that the valve on the driver’s side of the bulkhead is leaking but doesn’t think that that is where all the water is leaking away to. I presume that she means the heater valve. If it’s only losing the amount of coolant in the expansion tank I suggest that that is where the coolant is escaping from. Stephen Edwin has mentioned checking the heater hoses at the back of the engine block. One of those is connected to the heater valve. Before doing anything else I would check those hoses. If they appear OK try isolating the heater valve by joining the hoses to isolate the heater. I did this once a long time ago to keep the car useable until I sourced and fitted a replacement heater valve. If this identifies the problem and the heater hoses are rather old, I would consider renewing them if replacements can be sourced. They are short but bent through certain angles to fit. Other threads on this forum indicate that the heater hoses and heater valve for certain models are very difficult to obtain now.
Best of luck.

Jul 13th, 2019, 11:37	#14
Ian21401 Premier Member Last Online: Feb 11th, 2023 20:32 Join Date: May 2010 Location: Blyth, Northumberland	Re original post. OP mentioned that the valve on the driver’s side of the bulkhead is leaking but doesn’t think that that is where all the water is leaking away to. I presume that she means the heater valve. If it’s only losing the amount of coolant in the expansion tank I suggest that that is where the coolant is escaping from. Stephen Edwin has mentioned checking the heater hoses at the back of the engine block. One of those is connected to the heater valve. Before doing anything else I would check those hoses. If they appear OK try isolating the heater valve by joining the hoses to isolate the heater. I did this once a long time ago to keep the car useable until I sourced and fitted a replacement heater valve. If this identifies the problem and the heater hoses are rather old, I would consider renewing them if replacements can be sourced. They are short but bent through certain angles to fit. Other threads on this forum indicate that the heater hoses and heater valve for certain models are very difficult to obtain now. Best of luck.