Just a quick question:
Is there any explanation why my heater might be leaking coolant when I undo the screws to drop it down to floor level? Obviously doing this also tilts it forward at an angle. Quite a substantial amount drips into the footwells. The leak is NOT at the hose clamps.
I'd have thought the obvious answer is that there's a matrix leak that needs fixing, but the strange thing is, when the heater is screwed back into position and the car engine is turned on - water pump turning and coolant flowing - there is no leak!
I probably really need to dismantle it to find out but my hands are full at the moment with various other repairs.
Thanks in advance.
