The car has lately had a slight rumble at idle and i knew something was amiss,
So today decided to take the dizzy cap off and check the rotor arm too,
What i saw was a lot of build up on the cap black carbon,Which scratches off with my nail.
Is it ok for me to get some wet and dry and remove the carbon or should i just buy a new cap, The cap arm and leads look fairly new.
Gary
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