Follow these instructions on how to remove a spark plug. **Please note that the service life is provided as a general guide and may vary due to vehicle driving conditions. By examining the insulator firing nose color, an experienced engine tuner can determine a great deal about the engine’s overall operating condition. Spark plug heat range is too cold for the operating conditions. (Engine temperature can affect the spark plug’s operating temperature, but not the spark plug’s heat range). Mostly, the electrode surface is rather lustrous and uneven. There are additional decodes available for NGK US specification plugs. This video describes in detail the best process to examine a spark plug and assess its condition. Carburators. Champion Symbol Code. NGK Spark Plug Numbering System ... View full size version of NGK premium plug numbering chart. Below is a list of some of the possible external influences on a spark plug’s operating temperatures. Maintenance. Tech Tips. The NGK spark plug finder helps find the right spark plug via the NGK spark plug codes. An engine’s condition can be judged by the appearance of the spark plug’s firing end. Suspension. Lead compounds combine at different temperatures. Plug images are located on the opposite page. The ionized gas becomes a conductor and allow electrons to flow across the gap. h�bbd```b``�"��H�D0�D�^�L�`RD�=�,iH�`]����XWXM�� �dg��`[[email protected]$w��{ Dark coloring, such as heavy black wet or dry deposits, can indicate an overly rich condition, too cold a heat range spark plug, a possible vacuum leak, low compression, overly retarded timing or too large a plug gap. Serves as a lighter to ignite the air/fuel mixture under extreme conditions. Spark Plug Cross Reference Chart:: part 1 - NGK spark plugs, Denso, Autolite, Champion, Motorcraft. When a spark plug overheats, deposits that have accumulated on the insulator tip melt and give the insulator tip a glazed or glossy appearance. The material of the electrodes has oxidized, and when the oxidation is heavy, it will be green on the surface. Heat Range: Heat Range = Ground Strap, the ground strap indicates the heat-range of the spark plug.If the "color" of the ground strap "changes" too close to the ground strap's end, (which is above the center electrode), then the heat-range is "too cold" , meaning that the strap is losing heat too quickly to the base ring, and is not able to burn off deposits until near its end. This cannot be detected by a resistance tester at room temperature. Use a spark plug wrench with an extender. Part# NGK STK # NGK # Comp. Spark Plug Color Chart - Reading Your Plugs ... NGK, and other on how to read the color and condition of your spark plugs. NGK Racing NGK Standard Part No. Lead erosion is caused by lead compounds in the gasoline which react chemically with the material of the electrodes (nickel alloy) as high temperatures; crystal of nickel alloy fall off because of the lead compounds permeating and separating the grain boundary of the nickel alloy. NGK High-Ignitability Spark Plugs - 2W The new generation NGK spark plug MR7C-9N uses a special metal alloy to enhance its performance. The spark plug Cross references are for general reference only. Part# NGK STK # NGK # Comp. NGK G-Power Platinum alloy spark plugs uniquely shaped ground electrode & platinum alloy center electrode reduces the wear rate of the electrode than conventional plug and hence gives longer life. Ignition system problems causing a weak or intermittent spark. Air/fuel mixture is too rich, the carburetor settings are incorrect. Leading in the automotive industry, NGK spark plugs are available for virtually every type of engine – cars, motorcycles, marine applications, small engines, and power tools. Melting is caused by overheating. Although there are many different cases, if the insulation resistance between the center electrode and the shell is over 10 ohms, the engine can be started normally. Intro Table of Contents KTM Spark Plug Fitment Chart ManufacturerModelStandard PlugIridium PlugElectrode GapKTM1050 ADVENTUREOuter LMAR7DI-10Inner LKAR9BI-101.0 MMKTM1090 ADVENTURE (EURO 4)Inner LKAR9BI-10Outer LMAR7DI-101.0 MMKTM1090 ADVENTURE R (EURO 4)Inner LKAR9BI-10Outer LMAR7DI-101.0 MMKTM1190 ADVENTURENGK Inner LKAR9BI9NGK Outer … k This is often caused by over advanced ignition, timing, poor engine cooling system efficiency (scale, stoppages, low level), a very lean air/fuel mixture, or a leaking intake manifold. Repairs. You will likely see one of the following conditions. Once you get the socket over the spark plug, place your hand over the head of the wrench, grasping the head firmly and pull the handle, hitting it … The following symptoms or conditions may have an … Don't just ask for a spark plug, insist on NGK. NGK.com specializes in hard to find NGK products. Being able to “read” a spark plug can be a valuable tuning aid. Stock No. Image Racing Spark Plugs 14mm Spark Plugs (cont.) Check for correct application and spec/measurements. Be the first to know about sales and promotions Products. This video describes in detail the best process to examine a spark plug and assess its condition. If the deposits are wet, it can be an indication of a breached head gasket, poor oil control from ring or valvetrain problems or an extremely rich condition—depending on the nature of the liquid present at the firing tip. 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.Check out the images below, courtesy of NGK Spark Plugs, and get ready to do a little light reading the next time you pull your spark plugs.. Normal. We are not NGK Spark Plugs USA. Those formed at 370-470°C (700-790°F) have the greatest influence on lead resistance. A worn spark plug not only wastes fuel but also strains the whole ignition system because the expanded gap (due to erosion) requires higher voltages. �+.Θ �Eq ����3Ѕ�������t�K� ��| endstream endobj startxref 0 %%EOF 62 0 obj <>stream Typical lead erosion causes the surface of the ground electrode to become thinner, and the tip of the electrode looks as if it has been chipped. Finish. Because the spark plug is inside the engine and is the only easily removable part it can be used as an indicator to the state of tune and condition … To contact them, click here. The melting point of nickel alloy is 1,200~1,300°C (2,200~2,400°F). After a test run, the spark plug can be examined with the naked eye or under a magnifying glass for minute particles, cracking, or surface bubbling. Signs of fouling or excessive heat must be traced quickly to prevent further deterioration of performance and possible engine damage. Engine. Stock No. NGK SPARK PLUG prides itself on providing cutting-edge products, first-class expertise and technical know-how related to spark plugs, glow plugs, ignition coils and leads, oxygen, temperature, NOx and MAP/MAF sensors. Spark Plug – How Do I Read My Spark Plug Condition – What They Tell You 1. Dry and Wet Fouling. This is a simple re-hash of that with mostly the same text as the original from Autolite. Sensor Parts The world’s largest OE oxygen sensor manufacturer now offers a full line of premium technical sensors for the aftermarket, featuring more than 6,800 SKUs. Dry and Wet Fouling Although there are many different cases, if the insulation resistance between the center electrode and the shell is over 10 ohms, the engine can be started normally. Normal Condition. .d�-E“-����~����n��R�m'h� �f�_����l(E��b�ֲ�*��4:b�`�2�L^��-nH���FS~�� 7��!���$�ҡ�r� �m��q�a��E�&����>㯼8� e����n�|�P��G4��7�%�d��N��M�s endstream endobj 12 0 obj <>>>/Filter/Standard/Length 128/O(y�1��+�F��̑��Κmf�4�|��4)/P -1340/R 4/StmF/StdCF/StrF/StdCF/U(8��=�4���]�Z�9� )/V 4>> endobj 13 0 obj <>>> endobj 14 0 obj <>/ExtGState<>/Font<>/ProcSet[/PDF/Text]>>/Rotate 0/TrimBox[0.0 0.0 612.0 792.0]/Type/Page>> endobj 15 0 obj <>stream Have you ever wondered how to "read" a spark plug? 2. The world leader in spark plug technology for over 80 years. As mentioned I run Autolite Racing Plugs with cut back electrodes as well as NGK plugs. compare NGK spark plugs with Champion, AC, Denso, Bosch, KLG and Auto-lite Spark plug comparison chart This site uses cookies to help us provide quality services. 11 0 obj <> endobj 37 0 obj <>/Encrypt 12 0 R/Filter/FlateDecode/ID[<8EC06C7D21E64D978D23EB7C6BFBFA40><817B128E3C1B443BAFB54C14BF48AB3D>]/Index[11 52]/Info 10 0 R/Length 117/Prev 222916/Root 13 0 R/Size 63/Type/XRef/W[1 3 1]>>stream This condition is ideal, the spark plug and engine air/fuel mixture are operating properly. As a result, the spark plug is functioning optimally. Recommendations: When new spark plugs are installed, replace with plugs of the same heat range. Battery - Electrical. The first step is removing the spark plug you want to look at. Brakes. 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. ... do get a new set of Autolite plugs. Look at end of the spark plug that was in the cylinder and examine it. Below is NGK's spark plug part number decode. Abnormal electrode erosion is caused by the effects of corrosion, oxidation and reaction with lead—all resulting in abnormal gap growth. ɏ�}`Q����Ь�U�w��?�I8��}:`���n�`愷���1����[email protected]�q4�r/ye��)y�g��ӡG���lE��!V��%�(@��R,�k���S3�fّ��Ј�/�y�#����r��>(�����:�qkx� K�PL������~f�Ͷ��O =�. Home: XS11 Info. Lead fouling usually appears as yellowish brown deposits on the insulator nose. and material, plugs produced by various manufacturers do not have exactly the same heat range. The accumulation of deposits on the firing end is influenced by oil leakage, fuel quality and the engine’s operating duration. Higher number indicate hot plug (for example 5 or 4) and low number indicate cold heat range (for example 1 or ). It, combined with other parts, contributes upto 11% fuel efficiency* in the Honda Activa HET engines. %PDF-1.6 %���� Oil - Lubrication. Bosch and AC-Delco. It is possible, with care, to decode the construction of Champion sparkplugs. Correct heat range for engine and operating conditions. 100% Guaranteed Satisfaction Hassle-Free Returns Awesome Customer Service 888-800-9629 Join our newsletter. Standard style Spark Plug *NGK Spark Plugs are designed to OEM requirements and as such, a variant of each of the above styles may not be available as it may not be an OEM requirement. Resistor Caps the cover body is made of sturdy phenolic resin that endures high heat and tension. 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