I recently noticed that when I take a sharp bend (almost a U-turn) around 30–40 kph, I hear a sharp "knock…knock…knock…" noise from the outer front wheel area (that only happens for the left side wheel). It is a front-wheel-drive car.
It only happens in such a sharp bend. So I went to the mechanic, and they tested; however, we were not able to reproduce the issue. So they just guessed that it is the CV causing the noise, but they said that I can still drive until I start to hear more noise even when driving straight.
Today I just lifted the troubled wheel and drove on 2nd gear. I can see that the CV axle is not rotating smoothly. Please check the video I attached (watch and listen carefully around 00:10–00:14). I can hear some "knock…knock…" sound from the gear box area as well.
What would be the reason for the CV axle not rotating smoothly? Is it normal? Can this be related with the knocking sound I hear when turning?
Note: Suspension / steering rack / lower arms have all been replaced with brand new parts recently. I also did a wheel alignment and balancing recently. Lug nuts are properly tighten as well. Also, wheels are not touching the body when turning.