Carbon Cleaning Valved

[bobski1]

Currently have the intake off and the valves are quite heavy with carbon, currently looking for a mobile person to come and walnut blast of carbon clean but failing that wouldn't mind doing it myself but just wondering what people have used to do so, is it a case of coating in brake cleaner and going at it with a plastic brush?

[ssray]

Nitromores (even the modern stuff) will help with the carbon