Hey guys wonder if anyone has any suggestions?? i have a p reg vr6 and i love it to bits, best car ive ever had. last week or so been running rough, the odd backfire, low revs power loss and lumpy power, thought it might have been coil pack or crank sensor, but then last night the header tank boiled over and coolant pissed out... drove it to get new tyres on today as i had booked the appointment and water temp warning came on, checked coolant and there was none in header, filled up with coolant and let her run a bit, after bleeding and seems to be bubbling in header tank still but temp is fine