Heater Valve

I have replaced the heater valve with a new one but that is also leaking. My supplier tells me that the system must be pressurising and causing the valve to leak. How do I check if the system is pressurising. Regards Richard

It is pressurising…..because that's how the cooling system is designed. It shouldn't leak even when under pressure.

They are known for leaking - look at other recent threads here.

Take it back to the shop and get a refund/replacement.

Thanks Paul,   I removed the expansion tank cap and still leaking when running.
regards Richard.

They are terrible these repro valves…I have a thread going with regards to the ongoing issue with this.  I have now manged to get a OEM VW part (which took weeks) and will be fitting it oer xmas .  Every reproduction part I have bought for this has leaked and I have to date had 3.

FYI ringo

http://www.vwgolfmk1.org.uk/modules.php?name=Forums&file=viewtopic&t=107668

Thanks for info, I just tracked down an original V W heater valve , Will see how that will go.

Regards ringo99