Vehicle & Technical > Discovery

300tdi Head gasket ??

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Range Rover Blues:
Got to agree with TAck on that, do the job once and leave well alone.  the combination of ali/iron engine and compoisite gasket/stretch bolts has "fit and forget" written all over it.

Air lock, yeap it happens.  Probably the heater matrix.  I like to fill them with water at the thermostat housing elbow, get them hot then drain any air bubbles back form the same point.

There is a narrow pipe that's supposed to force air form the thermostat into the header tank whenthe pressure cap opens, but given the thermostat is above the header tank I don't have much faith in it when there's lots of air in the system.

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