Wow, thanks so much, that's really, really helpful. I am surprised how much carbon there was in that engine, considering I've always read that the BSM engine doesn't suffer as much as most with carbon build-up!
You did a really good job in cleaning that out. How long did it take you in all?
Did the toothbrush have any effect at all on the carbon deposits? I always imagined carbon deposits to be super hard and stuck fast. I've had some reasonable luck using a steam cleaner to get carbon off an exhaust, so I'd like to try it on the backs of the valves.
I don't know if I'm quite brave enough to tackle this myself though... I had to work myself up to installing the umbrella holder in the boot!
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14th September 2016, 09:32 PM
M-A8 
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