1990 Miata Spark Plug Socket Size
Overview
If you own a 1990 Miata and need to change the spark plugs, it’s important to know the correct socket size to use. The spark plug socket size refers to the diameter of the socket that fits over the spark plug, allowing you to remove and install it properly. In this article, we will provide you with the necessary information to determine the spark plug socket size for your 1990 Miata.
Determining the Spark Plug Socket Size
To find out the spark plug socket size for your 1990 Miata, you can refer to the owner’s manual or consult a reliable automotive resource. However, we have compiled a handy chart below that lists the socket size for various Miata models, including the 1990 version:
| Miata Model | Spark Plug Socket Size |
|---|---|
| 1990 Miata | 5/8 inch (16mm) |
| 1991-1997 Miata | 13/16 inch (21mm) |
| 1999-2005 Miata | 5/8 inch (16mm) |
| 2006-2015 Miata | 9/16 inch (14mm) |
Steps to Change Spark Plugs
Now that you know the spark plug socket size for your 1990 Miata, here are the steps to change the spark plugs:
- Make sure the engine is cool before starting.
- Locate the spark plug wires on top of the engine.
- Remove the spark plug wire from the first spark plug by firmly pulling it straight off.
- Attach the spark plug socket to a ratchet or extension.
- Insert the spark plug socket over the spark plug and turn it counterclockwise to loosen and remove the old spark plug.
- Inspect the spark plug for any signs of damage or wear. If necessary, replace it with a new one of the same size and heat range.
- Apply a small amount of anti-seize compound to the threads of the new spark plug.
- Insert the new spark plug into the socket and carefully thread it into the spark plug hole by hand to avoid cross-threading.
- Tighten the spark plug with the socket and ratchet, turning it clockwise until it is snug.
- Reattach the spark plug wire to the spark plug.
- Repeat the above steps for the remaining spark plugs.
Conclusion
Knowing the correct spark plug socket size for your 1990 Miata is essential for a successful spark plug replacement. By following the steps outlined in this article, you can confidently change the spark plugs in your Miata and ensure optimal engine performance. Remember to always consult your owner’s manual or a trusted automotive resource for specific information related to your vehicle. Happy wrenching!