Cavalier, Calibra, Vectra, Signum, Sintra & Insign
Ok, got a rather odd one here!
I've just recently taken ownership of a Vectra c with the z22yh Ecotec engine. It was going about 5 miles before overheating, so I did a few checks. What I'm noticing is that the top radiator hose gets really hot and pressurises, whilst the bottom hose...