i have recently brought a escort gti and have a few problems with it.the first problem is that it is loseing water but the oil has not gone milky white.ive had the cam belt,water pump and the thermostat changed.ive done a compression test and all 4 cylinders are holding 170lbs.the second problem is that when the car is ticking over it sounds like its missing.its had new plugs and leads. any ideas would be very grateful as i am starting to pull my hair out.