Air in cooling system
I have and issue with my 2006 Jaguar S type 3.0L with air entering the cooling system, resulting is a false coolant level alarm. The coolant level does rise in the reservoir but none is lost and returns to normal level once cool. I have vented the cooling system through the bleed screw several times . There appears to be air entering the cooling system from somewhere. Suspecting a failed head gasket I have carried out a compression test on all cylinders and all within spec. I carried out a cylinder pressure test with air and does not appear to be any leakage. Also there is not a smell of combustion gases from the coolant reservoir.
Would appreciate any comments
