Hi, My engine, 1.8 zetec ford focus, cuts out when i put the clutch down and am rolling to a stop. I have changed the Fuel vacuum hose as that had a hole in and i thought it was that but it still hasnt stopped. I had a look at my distributor cap and the HT leads and one of them has a green powder on it and the spark plugs have a brown sticky glue like substance on them. which of these could it be? it has become really annoying because i cant go for a drive without this happening. Any help would be very much appreciated.