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mikesmith2 · 7th March 2012, 14:28

I had a similar issue on a BMW and that turned out to be the expansion tank cap.

As these seem to use the same type of cap it could be that.

7th March 2012, 14:28	#9
mikesmith2 Loves to post None Join Date: Feb 2012 Location: Reading Posts: 466 Thanks: 1 Thanked 15 Times in 15 Posts	I had a similar issue on a BMW and that turned out to be the expansion tank cap. As these seem to use the same type of cap it could be that.