Hi all,
Well, after 5 years my boss has finally seen the light and has given me a company car. So the GS300 has to go :(
Because I've had the company car on permanent loan for the last 2 or 3 months the GS has been sitting on the drive not being driven, which has resulted in a couple of issues. Firstly a flat battery - no problem there, just fit a new one - but more worrying is a fault that has developed in the cooling system.
When I start it the water in the header tank bubbles ferociously as if it is overheating, although this is from a cold start. It then runs for maybe 5 or 10 minutes before cutting out, again, as if it has overheated. My neighbour took a brief look (he has a GS300 too) and speculated that it was pressurisation possibly caused by a blown head gasket. I don't think this is it as I had it to a mechanic about 500 miles ago when I sprung the rad and he categorically said the head gasket was fine.
So, any ideas? Could it be as simple as a stuck thermostat (another theory that has been mooted)? Or could the LPG be involved? Or...?
Thanks in advance.