Thread: Any Diesel or tractor mechs on here?

Originally Posted by Boar Freak

Thanks.
It is overhead, rocker arms and everything have to come off.
Forgot to mention the return hose between engine and radiator filled up with air too when tested without pump running.

Coolant wont flow with the pump not running and then as the temp rises any air turns locked in anywhere in the system will to steam and blow out the coolant.
If you can get a pressure tester and pressurise the cooling system to see if there's a leak. Can remove the glowplugs and crank over to see if coolant leaking into combustion area.