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Pinpoint Test G: Engine Ticking, Knocking Or Continuous Rattle

WARNING: This page is about a different car, the 2004 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.

Test Step 

  1. G1 CHECK FOR NOISE AT THE VALVE COVERS AND THE FRONT COVERS (OHC ENGINES) 
    • Carry out the Vehicle Cold Soak Procedure. Refer to VEHICLE COLD SOAK PROCEDURE .
    • Key in START position.
      NOTE: For a short-duration ticking noise, multiple engine starts may be necessary.
    • Using an EngineEAR, listen closely at the valve covers and the front covers (OHC engines) by placing the probe near the surface of the valve cover and then on the surface front cover.
    • Key in OFF position.
    • Is the noise source apparent? 
      1. Yes  : REMOVE the appropriate cover and INSPECT for loose, worn/broken components. REPAIR as necessary. TEST the system for normal operation.
      2. No  : GO to G2.
  2. G2 CHECK FOR NOISE AT THE CYLINDER BLOCK 
    • Key in START position.
    • Using an EngineEAR, listen closely at the cylinder block by placing a probe on or near each freeze plug.
    • Key in OFF position.
    • Is the noise source apparent? 
      1. Yes  : REPAIR or INSTALL new components as necessary.
      2. No  : GO to G3.
  3. G3 CHECK FOR NOISE WHILE DISCONNECTING EACH FUEL INJECTOR ELECTRICAL CONNECTOR, ONE AT A TIME 
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