Your Harley-Davidson Street Glide runs at its best when the ignition system is firing clean and strong. Worn or fouled spark plugs can cause poor throttle response, misfires, rough idling, and reduced fuel efficiency. At Motorhelmets, our spark plug tune-up service restores smooth performance and reliable starting — whether you ride daily or only on weekends.

This service is designed specifically for Harley touring models like the Street Glide, ensuring your plugs are installed and gapped to factory specifications for optimal performance.

Service Charges: $150.00 – $400.00

Price varies based on model, number of plugs, and required disassembly.

What’s Included:

• Spark Plug Inspection: Check for fouling, wear, and gap accuracy — helps diagnose engine issues
• Spark Plug Replacement: Install high-quality OEM or performance plugs with precise gap settings
• Wire & Coil Check: Inspect plug wires and ignition coils for corrosion, resistance, or wear
• Performance Test: Start-up and throttle response check to confirm smooth combustion
• Optional Tune-Up Add-Ons: Air filter cleaning/replacement or fuel system check available

Signs You Need a Spark Plug Tune-Up:

• Hard starting or no-start condition
• Misfires or engine hesitation
• Rough idle or surging
• Drop in power or acceleration
• Poor fuel mileage
• Excessive exhaust smoke or fuel smell

Why Choose Motorhelmets?

• Harley-Davidson Street Glide specialists
• Proper torque specs and factory gap settings applied
• Premium OEM and performance plugs available
• Trusted by riders across Orange County & Los Angeles
• Convenient Fullerton location

Schedule Your Spark Plug Tune-Up Today

Restore your Street Glide’s performance with a professional spark plug service. Book now and experience the difference on your next ride.