06/30/2026
Smooth starts, clean idle, crisp throttle — that all starts with healthy spark.
Spark plugs wear, foul, or open up over time. If your Harley is hard starting, popping on decel, missing under load, or just feels a little lazy, plugs and ignition checks are a simple place to start before chasing bigger problems.
Need a tune-up, service, or diagnostics? Message Scoville Cycle Service.
When was the last time your plugs were changed?