What is the spark plug gap on a 2005 Acura TL?
The spark plug gap for a 2005 Acura TL with its 3.2-liter V6 is 0.043 inches (about 1.1 mm). This is the standard gap used by the factory and most replacement plugs for optimal ignition performance and fuel efficiency.
Why the gap matters and what to expect
Understanding the correct gap helps ensure smooth starting, steady idle, and efficient combustion. While many aftermarket plugs ship pre-gapped, manufacturers and service manuals still call for verification and, if needed, adjustment to the specified 0.043 inches to maintain engine performance.
Standard gap specification
Key points about the official specification and practical notes for owners:
- Gap to set: 0.043 inches (1.1 mm).
- Many OEM and aftermarket plugs ship close to this gap; always verify with a gap gauge before installation.
- Avoid bending the center or ground electrode excessively when adjusting the gap to prevent damage or misfire risk.
Keeping the correct gap helps ensure reliable starts, smooth running, and optimal emissions. After handling plugs, re-check the gap to confirm it remains within tolerance.
How to check or adjust the gap
Before working on the ignition system, ensure the engine is cool and you have the proper tools (spark plug gap gauge, ratchet and spark plug socket, and the correct plugs for your TL).
- Remove the old spark plugs and inspect the seats for any debris or damage.
- Measure the gap with a spark plug gauge and adjust to 0.043 inches (1.1 mm) if needed.
- When adjusting, gently bend the ground electrode only; avoid touching the center electrode.
- Recheck the gap after any adjustment, then install the plugs to the recommended torque as specified in the service manual.
After installation, start the engine and monitor for any misfires or rough idle. If problems occur, recheck the gaps and consider consulting a technician.
Notes on plug brands and compatibility
Different plug brands (OEM, NGK, Denso, etc.) may have slightly different pre-gap values. Always verify the exact gap for the specific plug you are using and adjust to 0.043 inches (1.1 mm) if it falls outside tolerance.
Summary: For a 2005 Acura TL, the recommended spark plug gap is 0.043 inches (1.1 mm). Use a gap gauge to verify, re-check after installation, and follow the torque specifications in the owner's manual or service guide. If in doubt, consult a qualified technician or reference the plug manufacturer’s guidance for your chosen model.
What is the spark plug Gap on a 3.5 L V6?
Engine Specifications - 3.5L Duratec
| Engine | 3.5L V6 |
|---|---|
| Firing order | 1-4-2-5-3-6 |
| Ignition system | Coil on plug |
| Spark plug gap | 0.049 - 0.053 in (1.25 mm - 1.35 mm) |
| Compression ratio | 10.8:1 |
What is the spark plug Gap on a 2.5 L?
0.049–0.053 in
What is the spark plug Gap on a 2006 Acura TL?
0.044"
Notes: Iridium IX spark plug. Gap 0.044".
What is the spark plug Gap on a 3.7 L V6 Jeep?
Denso Set of 6 U-Groove Design Spark Plugs Gap 0.044 For Dodge Jeep 3.7L V6.
