The time of year (Well I have been putting it off for over 6 months now) to De-Coke the Lister CS 6/1 engine.

I am finally going to take the head off and clean all the crud from the valves and ports then pop down to my local auto parts store for a valve seating kit and grind them back up to perfection.

I have already drained the coolant circuit down and isolated the WVO lines ready for the operation but since it is almost hitting Zero (Freezing) through the day here in sunny Yorshire I thought no time like the present to get the chore done.

I will oist some pictures of the operation for interested parties to view.

I believe that running it in 'Stealth Mode' for 6 months has done the engine no favours at all! i.e. under 300 RPM for long periods at a time.

Andy Mahoney