Buy BMW 2.8 Bavaria Ignition Contact Sets

An ignition contact set, also known as breaker points, is a fundamental component in traditional automotive ignition systems. It plays a crucial role in controlling the timing of the spark that ignites the fuel-air mixture in the combustion chamber. The ignition contact set consists of a pair of electrical contacts that open and close in sync with the rotation of the engine's camshaft. As the contacts separate, they interrupt the current flow in the primary ignition circuit, inducing a high-voltage spark from the ignition coil to the spark plugs.

Over time, ignition contact sets can wear out due to mechanical friction and electrical arcing. Common symptoms of a failing ignition contact set include difficulty starting the engine, rough idling, engine misfires, reduced power, and poor fuel economy. The vehicle may also experience stalling or a noticeable decrease in performance during acceleration. These issues occur because worn or pitted contacts disrupt the precise timing needed for efficient combustion.

Regular maintenance of the ignition contact set is essential to keep the engine running smoothly. It's important to inspect the contact points for signs of wear, pitting, or corrosion. Cleaning the contacts gently with a fine abrasive material can remove buildup and improve conductivity. Adjusting the point gap to the manufacturer’s specifications using a feeler gauge ensures proper timing and performance. Lubricating the cam follower with a suitable grease can reduce wear and extend the lifespan of the contact set.

When installing a new ignition contact set, it's crucial to handle the components carefully to avoid contaminating the contact surfaces with oil or dirt. Begin by disconnecting the vehicle's battery to prevent electrical shocks. Remove the distributor cap and rotor to access the old contact set. After removing the old set, install the new one, ensuring that it is seated properly. Adjust the point gap according to the vehicle’s specifications. After installation, it's advisable to check the ignition timing with a timing light to ensure optimal engine performance.

The ignition contact set serves as a mechanical switch that precisely controls the flow of electricity in the ignition system. By opening and closing at exact intervals, it regulates the collapse of the magnetic field in the ignition coil, which generates the high-voltage pulse needed to fire the spark plugs. This process is synchronized with the engine's camshaft to match the firing order and timing required for efficient combustion. The proper functioning of the ignition contact set is essential for engine efficiency, power output, and emissions control.