Assalamualikum Everyone! I had an issue regarding engine heat up and its's a long story so kindly read and advise accordingly.
I went to Islamabad on 30th June from Lahore via Motorway. Car performed perfect. Mileage was 10 km/l. Stayed there for 3 days and came back on 3rd July. Checked everything before leaving, oils, water levels etc. Speed was 130 -140 throughout the journey till Sial Rest Area, the first stop I had. Right after leaving Sial, the temperature gauge started going up. I stopped the car (Turned off the engine, my mistake), refilled water in radiator, started driving again. after a kilometer or so, the gauge went up again. I did that mistake again and turned off the engine. Checked water level again and it was down. Then I noticed that the pipe coming from reserve water bottle was removed. I put it in its place, tightened it and started refilling water. but every time I poured water it came out as its boiling. Called FWO mobile workshop. The mechanic came and after checking it thoroughly, he said the head gasket is blown, you have to tow the car or you'll cease your engine. My father insisted that do something so we can keep driving at 70 - 80 without turning the AC on and reach home. He made the fan direct, removed thermostat valve and told us to go and refill water at every stop. I started driving again, checked water at next 3 stops but it was fine. The heat gauge stayed below normal i.e it want up just a quarter. I increased my speed to 100, everything went fine. I turned my AC on, still everything was fine and I came back. Next day, I took it to my local mechanic, a very trust worthy guy. He said there's a possibility that head gasket is blown but we have to open the head to check that. I came back that day. It was the last day he poured some water in it even the water was full. It's been 20 days, car is being driven daily, without thermostat valve, direct fan, with AC, water level is exactly the same.
Kindly advise me that should I go for the head gasket change? Or just put the thermostat valve back in place and keep going.
Thanking you in advance.