How To Bleed Coolant System Hi, Don Mk2

[miikeeyuk]

Hi, does anybody know how to correctly bleed the coolant system on a MK2 Gal? Mines a 2002 TDi model and ive recently fitted new motor brushes to the aux water pump, but need to bleed the system as the heating in the cabin is intermittent hot and cold and there sounds to be air in the aux pump when its running with the engine off...

[chrispb123456]

Hi

Usually running engine at 1500rpm with filler cap removed until at normal operating temperature is achieved keeping the level between min and max mark, replace cap, take vehicle on a run then recheck level when cold.

Providing you have no other problems with your cooling system all air should be vented

[miikeeyuk]

thanks very much , ill give it a try later.

[dbc]

I've refilled mine loads after various problems.

 

There's no specific bleeding method. Best bet is to fill it super slowly with pauses to let it settle as you go. Plus give the large hose that come off the cylinder head a good few squeezes as you go.

 

You'll hear air a bubbling through.

 

Can't emphasise enough though about doing it slowly!