Bad compression

Checks by the user

  • Restriction in filter/cleaner or air induction system
  • Valve tip clearances are incorrect

Check by the workshop personnel

  • Valve timing is incorrect
  • Cylinder head gasket leaks
  • Valves are not free
  • Worn cylinder bores
  • Leakage between valves and seats
  • Piston rings are not free or they are worn or broken
  • Valve stems and/or guide are worn
  • Piston height is incorrect
  • Valve spring is broken