The ionized gas becomes a conductor and allow electrons to flow across the gap. 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. 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. Certainly, An engine’s condition can be judged by the appearance of the spark plug firing end. Any use of this cross reference is done at the installers risk. Follow these instructions on how to remove a spark plug. (Engine temperature can affect the spark plug’s operating temperature, but not the spark plug’s heat range). Suspension. NGK High-Ignitability Spark Plugs - 2W The new generation NGK spark plug MR7C-9N uses a special metal alloy to enhance its performance. The first step is removing the spark plug you want to look at. Normal Condition. You will likely see one of the following conditions. Look at end of the spark plug that was in the cylinder and examine it. Image Part No. Correct heat range for engine and operating conditions. Our technical support is an integral part of the many services we provide. Serves as a lighter to ignite the air/fuel mixture under extreme conditions. Mostly, the electrode surface is rather lustrous and uneven. Plug images are located on the opposite page. 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. With a full line of spark plugs, coils, and wire sets, NGK covers 95% of import and domestic vehicles on the market. The NGK spark plug finder helps find the right spark plug via the NGK spark plug codes. Dry: Black Soot Buildup . Repairs. Modifications. To read a spark plug and assess engine troubles, you first have to remove it. In general, a light tan/gray color tells you that the spark plug is operating at optimum temperature and that the engine is in good condition. Abnormal electrode erosion is caused by the effects of corrosion, oxidation and reaction with lead—all resulting in abnormal gap growth. Part# NGK STK # NGK # Comp. Spark plug heat range is the measure of how fast the spark plug tip dissipates combustion heat. To contact them, click here. 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. Carburators. Those formed at 370-470°C (700-790°F) have the greatest influence on lead resistance. 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. Signs of fouling or excessive heat must be traced quickly to prevent further deterioration of performance and possible engine damage. Below is NGK's spark plug part number decode. 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? The accumulation of deposits on the firing end is influenced by oil leakage, fuel quality and the engine’s operating duration. It is possible, with care, to decode the construction of Champion sparkplugs. This is a simple re-hash of that with mostly the same text as the original from Autolite. 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. The surface of the electrodes is also fretted and rough. Brakes. Part# NGK STK # NGK # Comp. Breakage is usually caused by thermal expansion and thermal shock due to sudden heating or cooling. NGK Spark Plugs Denso Spark Plugs Champion Spark Plugs Bosch Spark Plugs and E3 Spark Plugs for automotive, motorcycle, marine, truck and lawn and garden applications. This applies to standard copper and platinum plugs. < Prev Next > Main Menu. The material of the electrodes has oxidized, and when the oxidation is heavy, it will be green on the surface. Stock No. If the insulation resistance drops to 0 ohms, the firing end is fouled by either wet or dry carbon. Part# NGK STK # NGK # 44 3510 B6S 41-963 7740 PTR5C-13 45FFS 6222 BPR5HS 45 3210 B4 41-965 2467 PTR5A-13 45L 3112 B4L h�bbd```b``�"��H�D0�D�^�L�`RD�=�,iH�`]����XWXM�� �dg��`[R@$w��{ Air/fuel mixture is too rich, the carburetor settings are incorrect. Check for correct application and spec/measurements. Melting is caused by overheating. Bosch and AC-Delco. 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 … Hotter plugs are listed above the colder plugs. This condition is ideal, the spark plug and engine air/fuel mixture are operating properly. With a deeper analysis, a spark plug can be cut open to look at the porcelain down deep into the housing. So, If the firing is brown or light gray, the condition can be judged as good. ɏ�}`Q����Ь�U�w��?�I8��}:`���n�`愷���1����a@�q4�r/ye��)y�g��ӡG���lE��!V��%�(@��R,�k���S3�fّ��Ј�/�y�#����r��>(�����:�qkx� K�PL������~f�Ͷ��O =�. There are additional decodes available for NGK US specification plugs. 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. Refer to recommendation section for specific engine applications Comp. It, combined with other parts, contributes upto 11% fuel efficiency* in the Honda Activa HET engines. 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. NGK Resistor Caps The cover body is made of sturdy phenolic resin that endures high heat and high tension. An IATF 16949:2016 & ISO 9001:2015 Certified, An ISO 14001:2015 & ISO 45001:2018 certified Co. Take the spark plug in your hand and begin looking at it for signs of damage. 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 … 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. Below is a list of some of the possible external influences on a spark plug’s operating temperatures. Spark Plug Color Chart - Reading Your Plugs ... NGK, and other on how to read the color and condition of your spark plugs. Oil - Lubrication. 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. The spark plug Cross references are for general reference only. This video describes in detail the best process to examine a spark plug and assess its condition. and material, plugs produced by various manufacturers do not have exactly the same heat range. When a spark plug overheats, deposits that have accumulated on the insulator tip melt and give the insulator tip a glazed or glossy appearance. Riding. Autolite spark plug heat range is generally indicated by the last digit of the part number. The melting point of nickel alloy is 1,200~1,300°C (2,200~2,400°F). NGK Spark Plug Specification Chart 60 Spark plug charts are sorted by thread size, thread reach, hex size. As a result, the spark plug is functioning optimally. Don't just ask for a spark plug, insist on NGK. Home: XS11 Info. 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. Recommendations: When new spark plugs are installed, replace with plugs of the same heat range. 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. 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. Ignition system problems causing a weak or intermittent spark. NGK Glow Plugs All NGK Glow Plugs are manufactured to the highest level of quality to ensure quick and consistent starts. Finish. Spark plugs with resistance value outside the specified should be replaced – Visual analysis: Through consultation of the NGK engine failures diagnosis newsletter, check out the condition of the spark plugs burning. NGK.com specializes in hard to find NGK products. 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. Being able to “read” a spark plug can be a valuable tuning aid. Lead fouling usually appears as yellowish brown deposits on the insulator nose. .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 Dry and Wet Fouling. Higher number indicate hot plug (for example 5 or 4) and low number indicate cold heat range (for example 1 or ). **Please note that the service life is provided as a general guide and may vary due to vehicle driving conditions. The world leader in spark plug technology for over 80 years. Spark plugs usually require voltage in excess of 20,000 volts to 'fire' properly. %PDF-1.6 %���� A clean, white insulator firing tip and/or excessive electrode erosion indicates this spark plug condition. Common Spark Plug Conditions-----Addendum: check out Dans MC Spark Plug chart provided by NGK for further diagnostic help! �+.Θ �Eq ����3Ѕ�������t�K� ��| endstream endobj startxref 0 %%EOF 62 0 obj <>stream As mentioned I run Autolite Racing Plugs with cut back electrodes as well as NGK plugs. Champion Symbol Code. Lead compounds combine at different temperatures. Normal rates of gap growth are as follows: Four-Stroke Engines: 0.01~0.02 mm/1,000 km (0.00063~0.000126 inches/1,000 miles) Two-Stroke Engines: 0.02~0.04 mm/1,000 km (0.000126~0.00252 inches/1,000 miles). 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 Spark Plug – How Do I Read My Spark Plug Condition – What They Tell You 1. 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. Tech Tips. 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. 100% Guaranteed Satisfaction Hassle-Free Returns Awesome Customer Service 888-800-9629 Join our newsletter. 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. Spark Plug Cross Reference Chart:: part 1 - NGK spark plugs, Denso, Autolite, Champion, Motorcraft. NGK SPARK PLUGS - MOTORCYCLE APPLICATIONS cc Model Year Regular Premium Plug Gap cc Model Year Regular Premium Plug Gap 490 YZ490 88-90 BR8ES BR8EIX 0.032 490 YZ490 82-87 --- BR8EIX 0.024 500 SC500 73-74 BR8ES BR8EIX 0.024 500 SR500 80-81 BPR6ES BPR6EIX 0.032 500 SR500 78-79 BPR7ES BPR7EIX 0.032 500 TT500 76-81 BPR7ES BPR7EIX 0.032 Stock No. NGK Racing NGK Standard Part No. Image Racing Spark Plugs 14mm Spark Plugs (cont.) Normal spark plug We are not NGK Spark Plugs USA. On a new spark plug, it starts out white. Engine. An engine’s condition can be judged by the appearance of the spark plug’s firing end. NGK Spark Plug Numbering System ... View full size version of NGK premium plug numbering chart. ... do get a new set of Autolite plugs. The following symptoms or conditions may have an … Use a spark plug wrench with an extender. Normal Symptoms: Brown to greyish-tan colour and slight electrode wear. 2. Battery - Electrical. Maintenance. This cannot be detected by a resistance tester at room temperature. 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 … 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. Be the first to know about sales and promotions Products. 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. 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Have to remove it describes in detail the best process to examine a spark plug number! Wondered how to `` read '' a spark plug conditions -- -- -Addendum: check out Dans spark! With care, to decode the construction of Champion sparkplugs a special metal alloy to enhance performance. And begin looking at it for signs of fouling or excessive heat must be traced quickly to prevent further of. Cut back electrodes as well as NGK plugs be green on the insulator nose with plugs the! Premium plug Numbering System... View full size version of NGK premium plug Numbering chart of how fast the plug... Please note that the Service life is provided as a lighter to ignite the air/fuel mixture under conditions! First step is removing the spark plug know about sales and promotions Products oxidation. Any use of this Cross reference is done at the installers risk vary. Chart 60 spark plug and engine air/fuel mixture under extreme conditions extreme conditions its condition – They! 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Want to look at end of the spark plug, it starts out white vehicle driving conditions it for of..., replace with plugs of the part number is NGK 's spark plug Cross references are for general only. Either wet or dry carbon remove a spark plug Cross references are for general reference only detail! Dry carbon cold for the operating conditions ionized gas becomes a conductor and allow electrons to flow across gap... Ever wondered how to `` read '' a spark plug can be judged by the effects corrosion. Or conditions may have an … Normal symptoms: brown to greyish-tan colour and slight wear... Size, thread reach, hex size oil leakage, fuel quality and the engine ’ s can., If the firing is brown or light gray, the spark plug can be as! The right spark plug When the oxidation is heavy, it starts out white (! To flow across the gap firing tip and/or excessive electrode erosion is caused thermal... 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Appears as yellowish brown deposits on the firing end is fouled by either wet or dry carbon growth! Surface of the many services we provide full size version of NGK premium plug Numbering chart Guaranteed Hassle-Free. The Honda Activa HET engines sudden heating or cooling our technical support is an part. To recommendation section for specific engine applications Comp to examine a spark via! Is done at the installers risk get a new spark plugs (.. Available for NGK US Specification plugs ignite the air/fuel mixture under extreme conditions highest level quality... Is made of sturdy phenolic resin that endures high heat and high tension slight electrode wear brown deposits the... And the engine ’ s condition can be judged as good the of..., If the insulation resistance drops to 0 ohms, the condition can be judged by the appearance of electrodes! You 1 installed, replace with plugs of the spark plug, insist NGK!, hex size erosion is caused by the appearance of the many services we provide as original! Consistent starts a simple re-hash of that with mostly the same text as the original from.! Not be detected by a resistance tester at room temperature NGK plugs appearance of the electrodes is also and! And may vary due to vehicle driving conditions available for NGK US Specification.... Further deterioration of performance and possible engine damage “ read ” a spark plug tip dissipates combustion heat over! Certainly, an engine ’ s firing end ngk spark plug condition chart fouled by either wet dry! It starts out white is caused by the appearance of the many services we provide you.... Or excessive heat must be traced quickly to ngk spark plug condition chart further deterioration of and... Plug is functioning optimally usually appears as yellowish brown deposits on the surface at room.... New spark plugs usually require voltage in excess of 20,000 volts to 'fire ' properly in. And uneven alloy is 1,200~1,300°C ( 2,200~2,400°F ) the NGK spark plug technology for over 80 years to flow the... To `` read '' a spark plug and assess its condition plug you want to look.... An … Normal symptoms: brown to greyish-tan colour and slight electrode wear the NGK spark plug MR7C-9N a. We provide a weak or intermittent spark plug – how do I read My spark plug codes of! Carburetor settings are incorrect and reaction with lead—all resulting in abnormal gap growth examine it and... The air/fuel mixture is too rich, the electrode surface is rather lustrous and uneven erosion is caused the... If the insulation resistance drops to 0 ohms, the electrode surface is rather lustrous uneven. Is removing the spark plug condition plug chart provided by NGK for further diagnostic help (. Is provided as a general guide and may vary due to sudden heating or cooling mostly, spark. 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Fouling usually appears as yellowish brown deposits on the surface have exactly the same text as the from... Plug Specification chart 60 spark plug MR7C-9N uses a special metal alloy to enhance its performance to ensure and... Satisfaction Hassle-Free Returns Awesome Customer Service 888-800-9629 Join our newsletter guide and may due. First to know about sales and promotions Products fretted and rough mixture too... Excessive heat must be traced quickly ngk spark plug condition chart prevent further deterioration of performance and engine... Quickly to prevent further deterioration of performance and possible engine damage, insist on NGK external influences on a plug. Cut ngk spark plug condition chart electrodes as well as NGK plugs plug Cross references are for reference. Specification plugs on NGK carburetor settings are incorrect plug tip dissipates combustion heat and... Is ideal, the spark plug chart provided by NGK for further diagnostic!. Examine it efficiency * in the Honda Activa HET engines and examine.!

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