50000 MI or 80000 KM

Inspect
    Fuel Tank
    Fuel Supply Line
      Check all fuel and vapor lines and replace as necessary.
    Fuel Delivery and Air Induction
      Inspect carb or throttle body mounting. Tighten if necessary.
Replace
    Fuel Filter
    Fuel Filler Cap
    EGR Valve
      Also clean sub-EGR valve.