bloody thing!

My scooby decided to over heat today

the top hose is getting hot, but the radiator isnt, nor is the bottom hose.

the heaters get hot

I suspect a blocked radiator or air lock, but has anyone got any suggestions?

Thanks!!!

 

Thermostat. It sits in the bottom hose on the water pump,if it's seized closed,you'll not get the water round the rad when it heats up.The top hose heat will be traking back from the engine.

 

Thanks, i'll see if i can find the thermostat, but its a maze around there!!!

 

All fixed.

One of the small return pipes was blocked so there was nothing getting back to the header tank.

 

Which pipe was it, one of the pair at the waterpump or another

 

The from the header tank to the radiator. it was blocked at the header tank end.