Main Menu

Ticking noise intermittent

  • 2009
  • Cayman
36 000

Just replaced one O2 sensor and thermostat.  In process of burping the coolant.  Noticed ticking sound now that the engine cover is off.  Not sure if related to the repair?  Seems like it is coming from the fuel injectors, since I listened via a metal rod touched to the fuel pipe.  The ticking starts up after two minutes of starting when at idle.  Rate of ticking seems to keep time with engine but then accelerates even as engine stays idle.  This seems to suggest a pump separate from engine cranking.  It comes and goes.  Is this a problem?  Should it send a fault code or other signal that can be detected with an OBD II reader?


You must log in to view answers associated with technical questions. Join PCA to participate in our community.
No votes yet