ok just been for a drive and let it warm up first and it sounds little rough as if its only running on 3 cylinders but I could be wrong but if you drive it slow its ok but if your driving at 30 if does feel jerky and rough and if you floor it in 3rd at 30 its very hesitant but then clears and goes ,any ideas as I don't know if its safe to drive as don't wanna do any damage to the engine