Ok, so I have suddenly developed a small coolant leak. After a couple of hundred miles, it might have dropped 2cm in the expansion tank. But it has been perfect up until the last month. It has previously had its head gasket done with an uprated one and had its timing belt and waterpump done about 3000 miles ago.
So I put some UV die in a week ago and came to inspect it tonight in the dark.
Any ideas where the leak is coming from? I can't work it out. The hoses to and from the expansion tank are ok, but this is at the base of the rear of the engine. Not far from the timing belt cover by the looks of it. Where should I look?
thanks in advance
Nick