Almost overheating

[delbouy]

Hi I have recently changed my head gasket but on flushing and re filling the cooling
system I have encountered a problem, the problem is I have filled and bled the system but although the bongo doesn't overheat it runs a little hotter than it used to but the bottom hose and the radiator stay cold. I put this down to the thermostat so I changed it but I still have the same problem, and as my radiator is only 12 months old I don't think it is that.
So has anyone any ideas as I am running out of ideas and hair!!!!!!!!!!!!!

[kev2477]

have you bleed it properly could be airlocked

[mister munkey]

What caused the gasket failure in the first place & has that been dealt with? If so the most likely cause of running hot with new stat & rad is insufficient bleeding. If thats the case, it could lead to another head problem.

Do both heaters blow hot?

How convinced are you the initial bleed was adequate?

[scanner]

How are you measuring that it is running hotter?

[lpgimports]

is water circulating?

If not then.

A hose is blocked
Rad is blocked
Thermostat is not opening
There is a huge airlock somewhere
could be the water pump impeller is slipping on the shaft saw that before.

Paul

[bigdaddycain]

Was you absolutely certain that it was just the gasket that needed replacing? The head was removed and pressure tested?

[321Away]

Stats dont always open easily, sometimes you have to hold revs at 2-3000 or take it for a short run, have header tank cap off and bleed pipe stop out and hold revs hig for a couple of minutes, usually clears most problems. Is the system pressurising after you've had it running?
Julian