At a constant highway speed on a typical straight road,lead/pull is the amount of effort required at the steering wheel tomaintain the vehicle's straight path.
Important:Vehicles will tend to lead/pull in the direction of the roadslope as part of normal operation.
Lead/pull is usually caused by the following factors:
Road slopeVariability in tire constructionWheel alignment (front cross caster and camber)Unbalanced steering gearElectronic Power Steering (EPS) steering position and torquesensors not calibrated correctly, if equipped.
Tire Dismounting and Mounting (Valve Stem and TPM Installation) Wheels
Torque Steer Description WheelsCrankcase Ventilation System Description Emissions PCV
General DescriptionA crankcase ventilation system is used to consume crankcasevapors in the combustion process instead of venting them toatmosphere. Fresh air from the intake system is supplied to thecrankcase, mixed with blow by gases and then passed through acalibrated orifice into the intake mani ...