Plug Gap Inspection

WARNING: This page is about a different car, the 2004 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION:

To avoid possible damage to the tip, do not adjust the plug gap.
To prevent damaging the tip, use wire type plug gap gauge when inspecting the plug gap.

Measure the spark plug gap using wire type plug gap gauge. If it is more than the maximum specification, replace the spark plug.
Standard plug gap 1.15-1.25 mm {0.046-0.049 in}

Maximum plug gap

Leading side: 1.5 mm {0.059 in}

Trailing side: 1.4 mm {0.055 in}