Victoria Car & Vehicle Maintenance Exhaust Systems & Mufflers - Vehicle Pollution Prevention



Here are some things that may be wrong with your exhaust system, with their corresponding symptoms:

If smoke is coming out of the exhaust, it may mean:

  • The fuel system is malfunctioning.
  • The engine control computer system is malfunctioning.
  • The engine may need major work due to worn piston rings or valves.

If an exhaust analyzer shows high carbon monoxide content, it may mean:

  • The air filter is dirty.
  • The PCV (positive crankcase ventilation) system is clogged.
  • The cold start system is malfunctioning.
  • The fuel system is operating too rich.
  • The ignition timing is incorrectly adjusted.
  • The thermostatic air control is malfunctioning.
  • The air injection system is malfunctioning.

If an exhaust analyzer show high hydrocarbon content it may mean:

  • Fouled spark plugs.
  • Faulty spark plug wires.
  • Faulty ignition cap or rotor.
  • Incorrect ignition timing
  • The fuel system is too rich.
  • There's a vacuum leak.

For most cars, with modern computer-controlled sensors, accurate diagnosis is a "must" to save time, fuel and, of course, our environment.

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