Well I tried the intake cleaning white spirit method today.
I used RON ECHT's method as shown in this vid
I took pictures with the borescope before and after. It was hard to get the scope in but I did my best, here are the results:
Before
![](https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fgg24%2Fmartziniuk%2F20130126171535.jpg&hash=688f9c8e130dd12dd3a98705f14ed7f8dd0dc97d)
After
![](https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fgg24%2Fmartziniuk%2F20130908131429.jpg&hash=332d078252eb375f96601448bf29dc59b4a2641a)
![](https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fgg24%2Fmartziniuk%2F20130909193622.jpg&hash=afcdebb01a46c40dc1383e74cf10cd17bc6efff0)
Admitadly I only got one valve but there is clearly a reduction in carbon. On the road the car feels no different so far but at idle the is no more puttt noise as it ticks over.
Like Ron I think I will now be doing this periodically as its very easy to do.