How it’s done:
Steps for replacing spark plugs
- Scan the car for codes.
- Clean all surface areas around the spark plugs.
- Remove spark plugs.
- Inspect threads in engine head (where plugs are installed).
- Perform compression test if needed.
- Inspect ignition wires.
- Apply anti-seize to the threads of the spark plugs.
- Install new spark plugs.
- If needed replace any gaskets removed.
During routine maintenance and checkups, your ignition system should always be inspected. Any time that a component of the ignition system is replaced, it’s a good idea to consider replacing the spark plugs as well. If you don’t preemptively change your spark plugs your engine will let you know by misfiring or running poorly, so schedule an inspection as soon as you notice that your engine is not performing properly.
What common problems indicate you may need to replace the Spark Plugs?
- Check Engine light is on.
- Engine misfires.
- Poor fuel economy.
- Vibration coming from the engine.