I have an MX83 Grande which I susupect has a blown head gasket.
It occasionally overheats sitting at the traffic lights. I replaced the radiator cap and its been OK for 12 months. Its started doing it again. There is no sign of water in the oil but if you take the radiator cap off and run the engine when its cold there a lot of froth in the top of the radiator. Could this be exhaust gas in the water? The head is also getting tappet noise now when it gets hot. I'm tempted to full the head off to have a look but what a big job and the price of the gaskets is a bit crippling.
Can anyone recommend a conclusive test to determine if its a blown head gasket? Has anyone tried the ACL gasket sets, they are a lot cheaper than genuine?