Modern engines rely on spark plugs built to precise heat ranges and materials — iridium, platinum, or copper — depending on the application. Our technicians use detailed factory data to identify and install the correct spark plug type, gap specification, and torque value for your vehicle.

We remove and inspect each plug for wear patterns that can reveal issues like oil consumption, lean mixture, or ignition faults, helping prevent larger repairs down the road.

Old or worn spark plugs can cause hard starts, misfires, poor fuel economy, or rough idling. Replacing them at proper intervals restores smooth engine operation, balanced combustion, and maximum fuel efficiency.

After installation, we clear adaptive data if required, verify idle quality, and confirm ignition system health — ensuring your engine performs to its full potential.

Service intervals vary depending on the plug material and engine design. Most modern vehicles require replacement every:

30,000–50,000 miles for copper plugs

60,000–100,000 miles for platinum or iridium plugs

We’ll check your manufacturer’s service schedule and make recommendations specific to your make and model — ensuring you stay aligned with factory maintenance standards.

If your engine is running rough or it’s time for scheduled maintenance, schedule spark plug service with The Garage MKG today. Call (231) 246-7735, visit us at 1860 Henry St, Muskegon, MI, or book online anytime.

We’ll replace your spark plugs with manufacturer-specified components, verify proper operation, and document everything clearly in your Complete Vehicle Health Report.