Turn the engine off and allow it to cool. Never work on a Toyota Tacoma engine while it is still warm. Locate the spark plug cover on the engine. On some Toyota Tacoma engines, the cover is across the top of the engine. On others, it is along the side. Remove the cover to reveal the ignition coils and spark plugs wires. The spark plug wires are plugged directly into the engine and the ignition coils are in the tip of the spark plug wire.
The Toyota company suggests that all spark plugs be replaced between 60,000 and 100,000 miles, depending on the use of the vehicle. Toyota Tacoma trucks used for large amounts of towing need their spark plugs to be replaced every 60,000 miles.
Things You'll Need
- Spark plug socket
- Socket wrench and extension
- Anti-seize compound
- New spark plug
- Tension tester
Remove the coil and wire from the spark plug. Twist and pull the plug out of the engine. Remove the spark plug from the cylinder well with a socket extender and socket wrench. Turn the wrench to the left to unscrew the spark plug from the engine.
Discard the old spark plug and apply a coat of anti-seize compound to the threads of the new spark plug.
Insert the new spark plug into the socket. Use the socket and extension to screw the spark plug into place.
Test the spark plug's tension with the tension testing tool. The spark plug tension may range between 11 and 15 foot pounds, depending on the size of the spark plug. The correct tension is indicated on the spark plug's packaging.
Return the ignition coils and spark plug wires to the engine and turn it to lock the plug in place. Repeat the entire the process with the remaining spark plugs.
Replace the spark plug cover when all of the spark plugs are replaced.
Tips & Warnings
- Do not remove more than one spark plug at a time. If the wrong spark plug wire is replaced, it will damage the engine.
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