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SPARK PLUG TROUBLE TRACER CHART • Appearance: Centre and/or ground electrodes are rounded and the gap is excessive • Cause: General wear (spark plug has. condition • Effect: An increased gap will multiply the workload on the ignition system and may cause misfire, poor fuel economy, and damage to other ignition components. • Remedy.
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Low compression. Overly late timing. Too large a plug gap. Wet deposits, may be an indication of: blown head gasket Poor oil control from rings. Valve train problems. An extremely rich condition. Depending on the type of the liquid, present at the firing tip. Also, look for any signs of fouling or excessive heat.
Spark Plug Diagnosis Chart
Which Full Heater Range Spark Plug Hue Chart - Type of Spark Plug Extreme Conditions. 2a. Rich/Fouled Spark Plug. Oil fouled. Graphite Fouled. Colder Plug Than Required. Cold But Still Adequate. 2b. Go furthermore Clean Spark Plug. Good. Authentic Good. The Best. Acceptable. 2c. Lean Spark Mate.
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How to read the color of your spark plugs. This page shows some typical spark plugs and problems.
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Plug is overheating. Check plug temperature value, ignition timing, fuel octane rating (might be too low) and mixture setting (too lean). Rectify before piston rings break or valve faces burn. Damaged electrode. Electrodes have been burned away, core nose has burned, glazed appearance. Pre-ignition.
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The trick is learning how to read your spark plugs. With help from the spark plug experts at NGK , we'll teach you how to diagnose minor tuning issues or potentially major engine problems by examining your spark plugs.
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This video describes in detail the best process to examine a spark plug and assess its condition. Have you ever wondered how to "read" a spark plug? This video describes in detail the best process.
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Examining the spark plugs that are removed from an engine can help you determine if the engine has problems that need to be corrected. Here's what to look for. Normal - Grayish-tan to white in color. No unusual signs of deterioration or coatings. ============================================
Before you post your spark plugs, take a look at this useful spark plug analysis chart! r
Related Articles References Article Summary Co-authored by Hovig Manouchekian Last Updated: February 24, 2023 References Reading a spark plug consists of examining and evaluating the condition and color of the tip of the plug.
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Normal spark plug A normal spark plug will have brown or grayish-tan deposits on the side electrode. Everything is just fine with your spark plug; you can reinstall the spark plug. Carbon fouled Black, dry soot on the electrodes and insulator tip indicates a carbon-fouled plug.
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The spark plug provides the essential spark it needs to ignite the fuel and keep your engine running. Join Ronnie from AutoZone as he shows you everything yo.
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Step1: Learn The Parts of a Spark plug Refer to our Spark Plug diagram below - Familiarize yourself with the name of each spark plug component so you can quickly inspect spark plugs for the condition: Parts of A Spark plug - Besthomegear.com Step 2: Inspect the Condition of Spark Plugs: What do bad spark plugs look like?
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Spark Plug Condition Chart Normal Combustion deposits are slight and not heavy enough to cause any detrimental effect on engine performance. Note the brown to greyish tan color, and minimal amount of electrode erosion which clearly indicates the plug is in the correct heat range and has been operating in a "healthy" engine. Overheated
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Dark coloring and highly wet deposits on the spark plug may indicate overly rich conditions for the spark plug. When the spark plugs show any signs of overheating, then they might be in rather lean conditions. The spark plug appears burnt if the air and fuel mixture is simply too slim. If either is the case, early intervention is recommended to.
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An engine's condition can be judged by the appearance of the spark plug's firing end. If the firing end of a spark plug is brown or light gray, the condition can be judged to be good and the spark plug is functioning optimally. Dry and Wet Fouling
