The distributor rotor button and cap are key components of older ignition systems. The rotor spins inside the cap, distributing high-voltage current to each spark plug at the correct time. Over time, the cap and rotor wear out, causing misfires, poor performance, or failure to start. Replacing these parts ensures smooth engine operation and reliable ignition.

What is a distributor rotor button & cap replacement?

This service involves removing the worn distributor cap and rotor button, installing new components, and ensuring proper alignment. The new parts restore accurate spark distribution to the spark plugs.

Why do you need a distributor rotor button & cap replacement?

Worn or corroded distributor parts can interrupt the ignition process, leading to poor combustion. This reduces fuel efficiency, increases emissions, and may cause the car to stall or not start at all. Replacement restores reliable ignition performance.

Common signs you need a distributor rotor button & cap replacement

• Engine misfires or runs rough
• Trouble starting the engine
• Stalling while driving
• Reduced fuel efficiency
• Visible corrosion, cracks, or carbon build-up on the cap or rotor
• Check Engine Light may be on (in some vehicles)

What happens during a distributor rotor button & cap replacement?

A mechanic will:

1. Inspect the distributor cap and rotor for wear and corrosion
2. Disconnect the battery for safety
3. Remove the old rotor button and cap
4. Install new, high-quality replacements
5. Reconnect ignition wires in the correct order
6. Start and test the engine for smooth operation

How much does a distributor rotor button & cap replacement cost?

Replacing the distributor cap and rotor button typically costs $150–$300, depending on the vehicle. If additional ignition components need replacing, costs may be higher.

Is it unsafe to drive with a worn distributor cap or rotor?

Yes. A failing cap or rotor can cause sudden stalling or prevent the car from starting. This can leave you stranded and may cause unsafe driving conditions. Replacement should be done as soon as symptoms appear.