Well, theories invited. My 014 LT has developed a slight misfire....only when hot after about 25 miles on the road and on a steady throttle only....revving it is fine...occasional backfire too.
My first option is a failing ignition coil....or plug or HT leads....but being efi it gets complicated.
Could be any of the sensors, perhaps crank position sensor or a leak in the map hoses.
Or possibly a tight exhaust valve.
Any more options to keep me from boredom?
Tempted to buy new coils but at £100 each?
Bah!