When to Replace Spark Plugs: Mileage and Warning Signs
When to Replace Spark Plugs: Mileage and Warning Signs When to Replace Spark Plugs: Mileage Intervals by Vehicle Type In 15 years as an ASE Master Tech, I…
ignition system maintenance
Spark Plug Problems: How to Identify Bad Plugs
⚡ Quick Answer: Bad spark plugs cause: ❌ Engine misfires (P0300–P0308 codes) ❌ Rough idling (vibrations at stoplights) ❌ Poor fuel economy (reduced MPG) ❌ Hard starting (cranking but not firing) ❌ Check engine light (often flashing) Check for: Electrode wear, carbon buildup, or oil contamination. Replace every: Copper: 30,000 miles Platinum: 60,000 miles Iridium: … Read more