Keep your Harley-Davidson Road King running at peak performance with our Engine Tune-Up & Spark Plug Replacement Service. Over time, engine components can lose efficiency due to wear, carbon buildup, and ignition issues — resulting in reduced power, rough idle, and poor fuel economy.

This service is designed to restore engine efficiency, improve throttle response, and ensure reliable ignition, making your ride smoother and more responsive.

What’s Included in the Service

Spark Plug Replacement

• Replace spark plugs (2–4 depending on model year)
• Install high-quality, manufacturer-recommended plugs
• Set proper gap and torque specifications

Ensures strong and consistent ignition.

Engine Tune-Up

• Inspect and adjust idle speed
• Optimize air-fuel mixture (for carbureted models)
• Check throttle response and engine performance
• Inspect ignition timing and system performance

Restores smooth engine operation and efficiency.

Air Intake Check

• Inspect and clean air filter (if applicable)
• Ensure proper airflow to the engine

Improves combustion and fuel efficiency.

General Engine Inspection

• Check for unusual noises or vibrations
• Inspect for oil leaks or worn components
• Evaluate overall engine condition

Helps detect early signs of engine issues.

Performance Testing

• Start and warm up the motorcycle
• Evaluate idle quality and throttle response
• Perform test ride if necessary

Confirms improved performance after service.

Benefits of Engine Tune-Up & Spark Plug Replacement

• Improved engine performance and acceleration
• Smoother idle and throttle response
• Better fuel efficiency
• Easier starting and reliable ignition
• Reduced engine hesitation and misfires

Service Charges

Engine Tune-Up & Spark Plug Replacement: $150.00 – $400.00

• Pricing varies based on model, condition, and parts required

When Should You Get a Tune-Up?

This service is recommended if you notice:

• Rough idle or engine misfires
• Reduced power or sluggish acceleration
• Difficulty starting the motorcycle
• Increased fuel consumption
• Motorcycle hasn’t been tuned in a long time

Schedule Your Harley-Davidson Road King Engine Tune-Up Today

Experience smoother performance, stronger power, and better reliability on every ride.

Peak Power. Reliable Ignition. Harley-Davidson Road King Care by Motorhelmets.