Скачать или смотреть What Do Bad Spark Plugs Look Like

Spark plugs are small but revealing engine components, and their condition can quickly show whether your engine is healthy or struggling. A good spark plug has a light tan or gray insulator, clean threads, and sharp electrodes, while problems leave distinct marks: carbon fouling looks like dry black soot from too much fuel, oil fouling leaves shiny black deposits from oil leaks, overheating turns the insulator white and blistered, pre-ignition melts or cracks electrodes, ash deposits create crusty chalk from oil or additives, worn electrodes become rounded with wide gaps, and cracked or glazed insulators show fine fractures or shiny patches. These issues cause symptoms ranging from hard starts and misfires to severe engine damage. Beginners can diagnose plugs by checking color, wetness, electrode shape, cracks, and comparing plugs across cylinders. Preventing problems means replacing plugs at the recommended interval, using the correct type and gap, fixing oil and fuel issues, and documenting findings with photos and notes to spot trends over time.

00:00 - Intro: Why Spark Plugs Matter
00:23 - The 'Normal' Look: A Healthy Spark Plug
00:48 - Problem 1: Carbon Fouling (Rich Fuel Mixture)
01:14 - Problem 2: Oil Fouling (Oil Leaks)
01:43 - Problem 3: Overheating
02:18 - Problem 4: Pre-Ignition & Detonation Damage
02:53 - Problem 5: Ash Deposits (from Additives)
03:22 - Problem 6: Worn Electrodes (Normal Wear & Tear)
03:49 - Problem 7: Cracked or Glazed Insulators
04:14 - Quick Diagnostic Guide (Color, Wetness, Shape)
04:53 - Prevention: How to Keep Spark Plugs Healthy
05:27 - Pro Tip: Documenting Your Findings