A knocking noise from the left front wheel could indicate several issues, such as a worn-out CV joint, loose or damaged suspension components, or a failing wheel bearing. It may also result from debris lodged in the brake system or issues with the brake pads. It's important to have a qualified mechanic inspect the vehicle to diagnose and address the problem promptly, as ignoring it could lead to further damage or safety concerns.
Worn front axle and/or front end component.
needs new wheel bearings
Tie rod
Worn left front wheel bearing.
a dog
Could be a bad CV joint or bad wheel bearing C.V. Joints need replacing
i have a grinding noise on the front left wheel. i have taken the calipa off and i have one brake pad that is shot. could it be that or can it still be the bearing. how can i find out.
Assuming this is an older car a knocking noise on turning could mean one of the drive shafts is worn. Other things to check - are the bolts tight on the front wheels, if a very high mileage it could be worn wheel bearings.
Turning right loads the left front wheel of the vehicle, so if you hear the knock when you turn right the bad CV joint is on the left, and vice versa.
Wheel bearing
A knocking/clicking noise when making a turn is a sign of a torn CV boot. In this case it's the driver side boot that is torn.
A grinding noise in the wheel will either be caused by worn brake pads, or a defective wheel bearing. Remove the left front wheel and inspect brake pads. If the brake pads are OK, you will need to remove the caliber and inspect the wheel bearing.