Possible faults of the front suspension (VAZ-2115)

Possible faults of the front suspension, causes and solutions:

Cause of malfunction	Method of elimination
Noise and knocking in the suspension when the car is moving
Suspension struts are faulty	Replace or repair the struts
The bolts that secure the anti-roll bar to the body have come loose. The rubber pads of the struts or bar are worn out	Tighten the bolts, replace worn cushions
The upper support of the suspension strut has become loose on the body	Tighten the upper support mounting nuts
Subsidence, destruction of the rubber element of the support stand	Replace the rubber element of the rack support
Wear of rubber-metal joints of suspension arms, stretchers or stabilizer bar struts	Replace the hinges
Worn ball joint of suspension arm	Replace the ball joint
Settling or breakage of the suspension spring	Replace the spring
Compression buffer destruction	Replace the buffer
Large wheel imbalance	Balance the wheels
Liquid leaking from the rack (rear suspension shock absorber)
Wear or destruction of the rod seal	Replace the seal
Nicks, scuffs on the rod, damage to the chrome coating	Replace worn or damaged piston rod and seal
Shrinkage or damage to the O-ring of the rack housing (shock absorber reservoir)	Replace the ring
Insufficient resistance of the suspension strut (rear suspension shock absorber) during the recoil process
Leaky rebound or bypass valve	Replace damaged parts or repair them
Insufficient fluid due to leakage	Replace damaged parts and fill with fluid
Scoring on the cylinder and piston ring	Replace damaged parts and fluid
Wear or damage to the fluoroplastic layer of the guide bushing	Replace the guide bushing
Recoil valve spring settlement	Replace the spring
Presence of foreign impurities in the liquid	Filter the liquid or replace it
Insufficient resistance of the suspension strut (rear suspension shock absorber) during compression stroke
Compression valve leak	Replace damaged parts or repair them
Insufficient fluid due to leakage	Replace damaged parts and fill with fluid
Wear of the rod or damage to the fluoroplastic layer of the guide bushing	Replace worn parts
Presence of foreign impurities in the liquid	Filter or replace the liquid
Wear, deformation or destruction of compression valve discs	Replace worn or damaged discs
Frequent suspension "breakdowns"
Suspension spring sag	Replace the spring
The stand does not work (rear suspension shock absorber)	Replace or repair the rack (rear suspension shock absorber)
Increased clearance in the ball joint
Wear of the rubbing surfaces of the ball joint parts as a result of contamination caused by leaks or damage to the boot	Replace the ball joint
Vehicle deviation from straight-line motion
Different air pressure in tires	Set the pressure to normal
Wheel alignment angles violation	Adjust the wheel alignment angles
Destruction of the rubber element of one of the suspension strut supports	Replace the rubber element of the rack support
Uneven elasticity of suspension springs	Replace the spring that has lost its elasticity
Significant difference in tire wear	Replace worn tires
Increased imbalance of the front wheels	Balance the wheels
Increased tire tread wear
Too sharp acceleration with wheel slip	Avoid sudden acceleration
Frequent use of brakes with wheel locking	When braking, do not allow the wheels to lock
Wheel alignment angles are violated. Vehicle is overloaded	Adjust the wheel alignment angles. Do not exceed the permissible loads specified in the operating manual
Uneven tire tread wear
Increased cornering speed	Reduce speed when turning
Excessive wear of ball joints of suspension arms and rubber-metal joints	Repair the suspension
Wheel imbalance	Balance the wheels