faulty ignition timing may be the cause
of misfiring
connect an OBDII code reader and see what
it indicates
Lots of reasons
blocked fuel line
Timing can be the cause..or dirty exhaust..check both..
My car misses, Every time I start it up it misfires, then slowly comes right the further I drive. I replaced my spark plugs, then the car was right again. no more misfiring. but that lasted only one day and its back to misfiring. then coming right after 2 km or so. What could be wrong?