(Noise in engine and check engine lamp) What could cause this?
Hi. I've got a Mazda 3 2007 1,6 diesel. The car is making a weird clicking noise. The
noise get's progressively worse but it isn't consistent at any RPM. I've changed the
particle filter and a vent in the exhaust system. The check engine lamp turned off
after the repair, but it started again 25 hours after the repair. The mechanics said that
the sound is just vibrations, but it's weird that the check engine lamp gets turned on
again, and that the sound didn't exist before the problem with the engine started.
Anyone has any ideas what could cause this?