Vehicle & Technical > Discovery

Air lock !!!!!

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Range Rover Blues:
I had a probelm with my LSE (same heater) that the heater wasn't getting hot, in the end I had to squasht eh top hose to get hot water to run through it, it got hot then and has been fine since.  It might seem that the heater is a sod for airlocking :-k

On the 300TDi I like to fill it with water, run it and get it hot then bleed any air out of the thermostat elbox via the plastic plug.  You might also want to top it up there too rather than the header tank whcih is not the highest point in the cooling system.

Mud-muncher1:

--- Quote from: loony landy on December 31, 2008, 18:19:56 ---Just done the head gasket on my 300tdi and have done 90 odd miles since, the water levels are fine and the heaters were working fine so all seemed well.

Wentout today in it and the heaters came on ok and everything was as it should be but then the temp gauge wentup and down lke a yo yo and the heaters went cold !!!

Got out to check the water etc and the levels were fine ut i had a lot of air gurgling from the system!!

My question is what is the best way to get rid f this air as it seems i have a lot of trapped air in the system.


cheers




tony

--- End quote ---


Hi m8, all the one's that i've done all i did was run the engine on idol and pumped the pipes that connect to the bottom of the radiator for a while and the same with the pipe that connects to the therostat with my hand over the expansion tank to force the air around the engine, then take it for a short drive, After this its normally alright, i know its not the certified way of doing thing, but it works for me :)


Jav

loony landy:
tried everything and im stumped, sat it on the drive for an hour bleeding the air out of it then took it for a drive , no heaters again !!! then the temp raised and as soon as i stopit gurgles away again !!!!!


Maybe it more than an air lock ???

Mud-muncher1:
Can i ask, how did you top up your system?

Also, have you checked the thermostat to see if it's working?

loony landy:
Topped it up through the bleed valve on top of the thermastat housing, have also noticed that the top hose to the rad does not get too hot so im wondering if the thermastat is working itself even though it is a new one, if that does not open then the engine would run hot and the temp would rise i think thats right anyway

tony

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