Spark Plug Replacement: Signs, Timing, and Benefits

Spark plugs ignite your air-fuel mixture. As they wear, your engine loses power, burns more fuel, and can misfire.

Signs Your Spark Plugs Need Replacement

• Rough idle or misfires
• Hesitation under acceleration
• Decreased fuel economy
• Hard starts or long cranking
• Check engine light for misfire codes

Typical Replacement Intervals

Most plugs last 60,000–160,000 km depending on material and engine design. We verify the correct interval for your vehicle.

Why Replacing Plugs Matters

Worn plugs strain ignition coils and catalytic converters. Early replacement improves performance and can reduce emissions.

What a Tune-Up Includes

Franco Garage checks plugs, coils, air filters, and fuel trim data to make sure your engine runs efficiently.

Ottawa Spark Plug Service

If you searched for an auto repair shop near you, Franco Garage provides certified tune-ups and spark plug replacement in Ottawa.

FAQ

Do I need new coils when I replace plugs? Not always, but we test coils for weakness.
Can bad plugs damage my engine? They can cause misfires that damage the catalytic converter.
Why does my car feel sluggish? Worn plugs can reduce power and efficiency.

Restore smooth performance. Book a tune-up today.