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2002-2006 Toyota Camry: Ignition System Tune Up

Time: 30min-1hr

Difficulty - Easy-Moderate

Cost - $20-120 (plug type, ignition boots)

Interval: 100k


Good spark plugs help ensure an efficient fuel burn which contributes to fuel economy and performance. Worn-out spark plugs increase electrical resistance and strain on ignition components such as the coils and ignition boots. They also cause poor combustion, wasting fuel and reducing horsepower. 


The interval for replacing platinum or iridium spark plugs can range from 60,000-150,000 miles depending on driving conditions and vehicle health.  Planning to replace spark plugs around 100,000 miles is a nice round number that falls in the middle of that range.


Spark plugs are replaced by removing the ignition coil and then the plug from the top of the cylinder head. A magnetic socket (or socket with a rubber boot) can make removal and installation easier. The new spark plug is then properly gapped and reinstalled to the specified torque.

Platinum and Iridium plugs typically come pre-gapped for optimal spark, but it's a good idea to check the gap with a feeler gauge in case there are any outliers from shipping.

Watch the video below to see how the spark plugs were replaced on a 2002-2006 era Toyota Camry with the 4-cylinder engine.

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Blow Gun

Adjustable rate air nozzle

Magnetic Spark Plug Socket

5/8" swivel spark plug socket and extension.

Dielectric Grease

Seal, insulates, and protects electrical connections.

Air Gun

Air blow gun

Impact Driver Socket Adapters

1/4", 3/8", and 1/2" Socket Adapters for 1/4" Impact Driver

3/8" Speed Handle

3/8" drive speed handle. Retain sense of feel while inserting nuts & bolts with speed.

Anti-Seize Lubricant

Easier assembly/disassembly. Helps to prevent galling, corrosion, and seizing

Tune Up Kit

Ignition coil and spark plug set

Toyota Air Filter

Bosch Engine Air Filter - Camry, Highlander, Sienna, Solara

Makita Drill & Driver Combo

Brushless 1/4" Impact and 1/2" Drill Combo (5.0Ah)

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