Maintenance Repco Authorised Service Licensed Vehicle Tester EX 11812

Worn or Faulty Spark Plugs

Signs, symptoms and how spark plugs can cause the check engine light to come on.

Star Motorworks Master Technicians
Logbook Servicing & Engine Tune Specialists
2026-04-28
5 min read
Worn or Faulty Spark Plugs

Signs, symptoms and how spark plugs can cause the check engine light to come on.

Overview & Practical Guidance

At Star Motorworks, our licensed vehicle testers and automotive technicians prioritize honest, transparent diagnostics. Whether you operate a late-model European vehicle, a family SUV, or a commercial fleet ute, adhering to manufacturer-compliant servicing schedules ensures peak mechanical efficiency and maximum vehicle safety.

All inspections and mechanical repairs carried out across our Pakenham, Clyde North, and Cranbourne West workshops are executed in accordance with Victorian statutory guidelines, Australian Consumer Law, and the Repco Nationwide 12-Month / 20,000km Warranty.

Common Questions

Standard copper spark plugs should generally be replaced every 30,000 to 45,000km, while long-life platinum and iridium spark plugs last between 80,000 to 120,000km depending on manufacturer specifications.

Book a Service or Inspection at Star Motorworks

Our master mechanics in Pakenham, Clyde North, and Cranbourne West are ready to assist with full logbook servicing, roadworthy certificates, and specialized diagnostics.