I have a 2009 Maserati granturismo S, with 59000km. My crank pulley makes chirp noises once the engine warms up, only during idling. See these videos:
https://www.youtube.com/watch?v=DyY7f-juS-I
https://www.youtube.com/watch?v=fGRae2fWaug
I sprayed lithium grease on the inside of the pulley. See red arrow in pic.
The chirp then disappeared. See videos:
https://m.youtube.com/watch?v=5NIQxuPf5pk
https://m.youtube.com/watch?v=fnzPNHU6GWc
After a week or so, the chirp is back. Does anyone have any idea what the problem is and how to solve it? Thanks in advance.
https://www.youtube.com/watch?v=DyY7f-juS-I
https://www.youtube.com/watch?v=fGRae2fWaug
I sprayed lithium grease on the inside of the pulley. See red arrow in pic.
The chirp then disappeared. See videos:
https://m.youtube.com/watch?v=5NIQxuPf5pk
https://m.youtube.com/watch?v=fnzPNHU6GWc
After a week or so, the chirp is back. Does anyone have any idea what the problem is and how to solve it? Thanks in advance.