The 2010 Acura TSX has four spark plugs, one for each of its four cylinders in the 2.4-liter inline-4 engine.
Understanding how many spark plugs the car uses helps with maintenance planning, replacement intervals, and diagnosing performance issues. Below we explain the engine layout, why there are four plugs, and how to care for them.
Engine layout and spark plug count
The TSX's 2.4-liter inline-4 engine uses four spark plugs in total—one per cylinder. The ignition system commonly employs coil-on-plug ignition, with each coil directly atop a spark plug for efficient combustion.
Maintenance considerations
To keep the engine running smoothly, it's helpful to know when and how to replace spark plugs, and what signs indicate wear.
- Number of spark plugs: 4
- Typical replacement interval: 60,000–100,000 miles, depending on plug type (iridium or platinum) and driving conditions
- Common wear signs: rough idle, misfires, reduced fuel economy, difficulty starting, or check engine light
- Recommended plug types: iridium or platinum, usually OEM equivalents from brands like NGK or Denso
After replacing spark plugs, ensure proper torque and gap settings per the owner's manual or a trusted service guide.
Choosing the right spark plugs
Consult the owner's manual or a dealer for the exact part numbers suitable for the 2.4L engine in the 2010 TSX. Using off-spec plugs can affect ignition timing and engine performance.
Summary
In short, the 2010 Acura TSX uses four spark plugs—one for each of its four cylinders. Regularly replacing them with the recommended type keeps the engine efficient and reliable.