Maintenance / 2004 Automatic 4-speed · 4 cyl · 1.7 L · EPA 25/34 mpg city/highway

Spark plugs

Use the engine-specific plug type. Check the service schedule and inspect ignition faults before replacing parts.

IntervalReplace spark plugs at 110,000 mi under normal and severe schedules. Confirm the correct plug for the engine before purchase.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

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.
Schedule applicability: Use the severe schedule when driving mainly on trips under 5 miles (under 10 miles in freezing weather), above 90°F/32°C, in extensive idling or stop-and-go use, with a roof rack or on mountain roads, or on muddy, dusty or de-iced roads. Occasional severe use follows the normal schedule. U.S. schedules only.

Source

FuelEconomy.gov model-year bulk vehicle records

Source ↗

Official bulk configuration, engine, transmission, drivetrain, fuel-economy, volume, and emissions records; the official record API is the bounded fallback.

United States, complete imported model years 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026Cylinders: FuelEconomy.gov vehicle record 19582, cylinders

2004 Honda Civic Sedan Owner’s Manual

Source ↗

Official coherent Civic Sedan PDF; cover and body identify Civic. Common facts and fixed normal/severe schedules were visually compared with the Civic Coupe manual.

United States 2004 Civic Sedan gasoline 1.7 L; excludes Hybrid and GX. Cross-body application is limited to separately reviewed invariant facts and schedules.2004 Civic Sedan Owner's Manual, printed139-140 / PDF142-143; concordant 2004 Civic Coupe Owner's Manual reproduction, printed145-148 / PDF148-151. Body/year verified on each PDF pages 1-3.