Maintenance / 1998 Civic CNG · Automatic 4-speed · 4 cyl · 1.6 L
Spark plugs
Use the GX-specific platinum-tipped plug and the primary manual removal/installation procedure. Inspect threads and tip for corrosion; do not clean with a wire brush and reuse.
IntervalReplace every 7 years or 105,000 miles (168,000 km), whichever comes first; replace sooner if corrosion is found. Inspect at the Civic GX supplement schedule intervals.Verified
01 / Requirements
Configuration-specific service and fitment facts
These sourced values are shared by the specification sheet and the maintenance guides for this exact configuration.
- Cylinders
- 4 Verified
- Spark plug specification
- NGK PFR7N-D; special platinum-tipped design for Civic GX. Verified
- Spark plug gap
- 0.031 in VerifiedFactory tolerance: +0/-0.1 mm (0.03 in +0/-0.004 in). Inspect for corrosion; do not wire-brush and reuse.
- Installation
- Work on a cooled engine using the specified tightening procedure. Do not adjust a fine-wire plug gap unless its manufacturer explicitly permits it.
- Tightening torque
- 15 N·m (11 lbf·ft), using the primary manual removal and installation procedure.