Possible fault causes
- Dynamic driving style when oil level is near minimum (oil foaming)
- Engine oil pressure Too high or too low
- Injection valve
Faulty or Borderline
(opens too late / not long enough / not enough or leaks)
- Bar ignition module Faulty
- Intake distributor leaks
- Compression too low
(e.g. Cylinder lining damaged, Valve-seat ring Faulty ...)
- Valve lifter Faulty
(Intake valve has not switched to the other lift or has not switched quickly enough)