BMW Control Arm
The ignition system of an IC engine is home to various subsystems like the fuel system, the cooling system, the camshafts, the turbochargers and the gears. Together they all ensure a proper functioning and smooth running of an engine. To induce a spark in the ignition system various components are needed such as the spark plug, the ignition coil and the distributor. Of all these vital components, it is the distributor which allots high voltage to the spark plugs, wires and the cylinder (firing order) by breaching the current into the ignition coil.
BMW distributor cap is a component of an ignition system which hides the distributor and its rotor (rotating arm). The motion of a rotor can be initiated or depressed by a spring loaded carbon button which is placed in the middle of a distributor cap. Basically the distributor cap is mounted over the distributor shaft to achieve a smooth diffusion of the electrical charge from the ignition coil to the spark plugs and finally to the spark plugs wire. Apart from this, these distributor caps also help in fading the emission level of your sedan and in actualizing active fuel management.
The BMW distributor cap is flawlessly designed to gain a quick ignition. These BMW distributor caps are constructed from plastic and copper materials. The number of cylinders in an engine is accountable to the number of distribution points in a cap. Now-a-days BMW engines are either fitted with a Distributor-less Ignition System or a Direct Ignition System or a Coil-on-Plug System.
Few manifestations which indicate you towards a dire BMW distributor cap are a potholed rotor, misplaced spark plugs, inconsistency in the engine temperature, carbon cracking, etc. The BMW distributor cap may get affected due to highly fluctuating voltages in a damp condition, and are therefore recommended to replace after every two years or 15,000 miles service.
Immediately after winning over the four-stroke IC engine, car manufacturers all across the globe turned to pay their due attention and sincere concern towards the suspension system. The suspension system of any sedan is differentiated as dependent suspension, independent suspension and semi-dependent suspension which are further sub-grouped as front suspension and rear suspension. Out of various reliable and durable suspension sub-components, BMW Control is the one which connects the wheel flange to the chassis of your BMW.
BMW Control arm is also known as an A-arm or a wishbone due to its bar shaped triangular sub-frame like an alphabet A. BMW control arms are mounted with the front suspension besides the McPherson struts. BMW A-arm is a system of linkages which is a virtually flat sub-frame with three strong points (two at the foot, attached to the frame; one at the apex, attached to the spindle) and is meant to pivot at two ends: The wide end is pivoted on a bushing and the tapered one on a ball joint.
While riding over a bumpy road if you hear a clunking thud then it is your damaged or oblong shaped BMW control arm bushings at one or both sides of your sedan. A loose or tattered ball-joint may cause axial or radial play of the wheels and that is why your sedan quivers.