the issue i have is just gone from jct 34 m1 to jct 36, about 3 miles from the M1, i got multiple engine fault error messages coming on, and engine became sluggish to respond, have connected it to FiatECUscan which has given P0300 and P0302, multiple misfires and multiple misfires cylinder, 2, the engine has only recently in last week become a little stubborn to start, have checked for possible causes but where is the best place to start, 
