A running motor sends a large amount of electricity through the ignition coils to the rotor, which rotates inside the distributor. The rotor directs the energy in a specific one through the spark plug wires finally to the engine cylinders in the correct ignition order.
The rotor and distributor cap keep the distributor contents separate from the engine and keep the distributor's operating parts clean and tidy, while supporting the incredibly high volts of energy and delivering them to the appropriate spark plugs. The spark plugs use the distributor spark to ignite the fuel mixture, which is what keeps the engine running.
The high voltage goes through this entire distribution system during the operation of your vehicle, but if there is a problem, this voltage will not be distributed to the spark plugs to ensure the engine runs. Usually, a defective rotor and distributor cap will produce some symptoms that will alert the driver that service may be required.
1. Engine failuresEngine misfires can occur for several reasons. Checking the rotor and cap of your distributor to see if they need to be replaced is a way to make sure everything works properly.
2. The car does not startWhen the distributor cap is not closed properly or does not work well, the engine cannot send the spark through the complete circuit required to move the cylinders, which makes the car run.
3. Check that the engine light comes onThe Check Engine light can mean several different things, but when you see this light along with some of the other symptoms listed here, it is time to call a professional to see what your car's computer code is.
4. Excessive or unusual engine noises
Your vehicle may emit very strange noises if the rotor and the distributor cap do not work well, specifically because the cylinders will attempt to fire but will fail. You may hear a tapping, clicking or sizzling sound when the rotor and distributor cap are failing.
Each time you perform routine service on your vehicle, request that the ignition system be checked for defects or problems. If you have any trouble starting your car, get assistance from a qualified Vermin-Club automotive technician.