Davehasaskoda

Thanks for the reply, Dont think it's the radiator. My mechanic only changed the water pump with the new cylinder head and cambelt etc...so he claims that it can't be that (probably because he would have to do it under warranty if he did. I had a thought that it could be the heater matrix too, bt im unsure. I will see if this can be by-passed and check for further coolant loss.

Right where do I start...my cars a Octavia 1.9tdi 115k miles. I need help to find why my car is losing coolant. It loses about a litre overnight, and can't even drive 40 miles without the warning lights flashing on. Its been in the garage they pressure tested it and replaced the tank and cap. Problem still not fixed, then bypassed the egr cooler and still leaks so guess its not that either. History the car had a new cylinder head, valves, water pump, etc after a cambelt failure only 6 months ago. The car was fine for months until I had fuelling problems which after spending a lot of money at Skoda dealer and local garage turns out to be fuel pump thats'on its way out.' Which I haven't replaced yet. The coolant problem only started after it went be fixed for fuel problems! I know this is a lot to read but please if anyone has any helpful information or previous experience with similar problem.