happy 10/7/2012

2002 Dodge Ram 1500 Base 8Cyl4.7L - Engine

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Check engine light on. Small evap leak. Already change gas cap.

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  CVO 10/7/2012

  P0442 Evaporative Emission Control System Leak Detected (small leak)
  
  This indicates a fuel vapor leak in the EVAP control system. It means a very small leak has been detected. In fact, the leak can be from a hole as small as 0.04" in diameter. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system.
  
  Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.
  
  Causes
  A small leak/hole in a fuel vapor hose/tube
  Other small leak in EVAP system
  Faulty vent o-ring seal
  
  Possible solutions.
  Inspect the EVAP system for cuts/holes in tubes/hoses

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