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Pinpoint Test B: Engine Ticking Noise

WARNING: This page is about a different car, the 2004 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
  1. B1 CHECK FOR TICKING NOISE AT THE FUEL RAIL 
    • Disconnect the first fuel line clip.
    • Is the ticking noise gone? 
    1. Yes  : CHECK for TSB for applicable vehicle. REPAIR as necessary. TEST the system for normal operation.
    2. No  : GO to B2.
  2. B2 CHECK FOR TICKING NOISE AT THE FUEL INJECTOR 
    • Using an EngineEAR, listen at the fuel injectors by placing a probe on each injector. To isolate the faulty injector, disconnect the injector electrical connector and listen for the noise.
    • Is the fuel injector the source of the ticking noise? 
    1. Yes  : INSTALL a new fuel injector. REFER to FUEL CHARGING & CONTROLS - 2.3L for 2.5L engines, FUEL CHARGING & CONTROLS - 3.0L (2V) for 3.0L engines or FUEL CHARGING & CONTROLS - 4.0L SOHC for 4.0L engines. TEST the system for normal operation.
    2. No  : GO to B3.
  3. B3 CHECK THE BELT TENSIONER FOR TICKING NOISE 
    • INSPECT the accessory drive. CHECK for the belt tensioner bottoming at end of travel or not at end of stroke.
    • Using an EngineEAR, listen at the belt tensioner.
    • Is the belt tensioner the source of the noise? 
    1. Yes  : INSTALL a new belt tensioner. TEST the system for normal operation.
    2. No  : GO to B4.
  4. B4 CHECK THE WATER PUMP FOR TICKING NOISE 
    • Using an EngineEAR, listen at the water pump for ticking noise.
    • Is the water pump the source of the noise? 
    1. Yes  : INSTALL a new water pump. REFER to ENGINE COOLING . TEST the system for normal operation.
    2. No  : GO to B5.
  5. B5 CHECK FOR AN OBSTRUCTION OF THE COOLING FAN 
    • Inspect the cooling fan for obstructions.
    • Check the cooling fan and shroud for wear or damage.
    • Was there an obstruction or does the cooling fan show signs of damage? 
    1. Yes  : REPAIR or INSTALL a new cooling fan. REFER to ENGINE COOLING . TEST the system for normal operation.
    2. No  : GO to B6.
  6. B6 CHECK THE OIL PUMP FOR TICKING NOISE 
    • CHECK the oil pump using EngineEARs and probe at the oil filter adapter to verify the oil pump as a source.
    • Is the oil pump the source of the noise? 
    1. Yes  : INSTALL a new oil pump. Refer to the appropriate ENGINE article. TEST the system for normal operation.
    2. No  : GO to B7.
  7. B7 CHECK VALVE LIFTERS OR LASH ADJUSTERS FOR CORRECT OPERATION 
    • Check valve lifter/lash adjuster for correct operation, using EngineEARs.
    • Are the valve lifters/lash adjusters operating correctly? 
    1. Yes  : VERIFY customer concern. CONDUCT a diagnosis of other suspect components.
    2. No  : INSTALL a new valve lifter/lash adjuster(s). TEST the system for normal operation.
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