I have noticed recently a strange grinding noise somewhere from the lower engine compartment when you accelerate from stop. It appears to be RPM related and it sounds like a broken grinder mechanism or something like then. Once the care it set to move it is not there anymore. I did my research and all suggests engine mount problems. So I inspected the car and noticed that the upper torque rod (part 30680474) was in a very bad shape as well as the lower bushing (31277314) on the right site was somewhat worn too. I replaced them both over the weekend and tried the car - same problem; no change in the noise. Then I inspected the left mount (31316875) and it looked good to me. The mount has even a big torx holding the upper part of the rubber to the inside mount section so you can remove them and look all the rubber closely. All seemed to be good. Lastly I checked the right mount (31257674). I did not remove the whole mount, just inspected visually and it seemed to be fine as well.
Now I am wondering what else could cause this kind of noise? Any ideas?
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