ngk spark plug condition chart

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 Spark Plug Specification Chart 60 Spark plug charts are sorted by thread size, thread reach, hex size. Below is a list of some of the possible external influences on a spark plug’s operating temperatures. 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. < Prev Next > Main Menu. Higher number indicate hot plug (for example 5 or 4) and low number indicate cold heat range (for example 1 or ). ... do get a new set of Autolite plugs. You will likely see one of the following conditions. This applies to standard copper and platinum plugs. Lead fouling usually appears as yellowish brown deposits on the insulator nose. It, combined with other parts, contributes upto 11% fuel efficiency* in the Honda Activa HET engines. Engine. **Please note that the service life is provided as a general guide and may vary due to vehicle driving conditions. NGK Spark Plug Numbering System ... View full size version of NGK premium plug numbering chart. This is a simple re-hash of that with mostly the same text as the original from Autolite. The surface of the electrodes is also fretted and rough. 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. The melting point of nickel alloy is 1,200~1,300°C (2,200~2,400°F). Part# NGK STK # NGK # Comp. Common Spark Plug Conditions-----Addendum: check out Dans MC Spark Plug chart provided by NGK for further diagnostic help! An engine’s condition can be judged by the appearance of the spark plug’s firing end. The world leader in spark plug technology for over 80 years. By examining the insulator firing nose color, an experienced engine tuner can determine a great deal about the engine’s overall operating condition. Follow these instructions on how to remove a spark plug. Oil - Lubrication. (Engine temperature can affect the spark plug’s operating temperature, but not the spark plug’s heat range). The NGK spark plug finder helps find the right spark plug via the NGK spark plug codes. Maintenance. Stock No. 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. As a result, the spark plug is functioning optimally. 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. Hotter plugs are listed above the colder plugs. With a full line of spark plugs, coils, and wire sets, NGK covers 95% of import and domestic vehicles on the market. Finish. 2. Breakage is usually caused by thermal expansion and thermal shock due to sudden heating or cooling. and material, plugs produced by various manufacturers do not have exactly the same heat range. This video describes in detail the best process to examine a spark plug and assess its condition. 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. Look at end of the spark plug that was in the cylinder and examine it. Spark Plug Color Chart - Reading Your Plugs ... NGK, and other on how to read the color and condition of your spark plugs. 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. Melting is caused by overheating. To read a spark plug and assess engine troubles, you first have to remove it. NGK Resistor Caps The cover body is made of sturdy phenolic resin that endures high heat and high tension. 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 The spark plug Cross references are for general reference only. 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. To contact them, click here. 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. 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. Signs of fouling or excessive heat must be traced quickly to prevent further deterioration of performance and possible engine damage. Plug images are located on the opposite page. h�bbd```b``�"��H�D0�D�^�L�`RD�=�,iH�`]����XWXM�� �dg��`[[email protected]$w��{ �+.Θ �Eq ����3Ѕ�������t�K� ��| endstream endobj startxref 0 %%EOF 62 0 obj <>stream This condition is ideal, the spark plug and engine air/fuel mixture are operating properly. Normal Condition. Normal Symptoms: Brown to greyish-tan colour and slight electrode wear. Spark plug heat range is the measure of how fast the spark plug tip dissipates combustion heat. Stock No. Bosch and AC-Delco. Air/fuel mixture is too rich, the carburetor settings are incorrect. If the insulation resistance drops to 0 ohms, the firing end is fouled by either wet or dry carbon. Lead compounds combine at different temperatures. Those formed at 370-470°C (700-790°F) have the greatest influence on lead resistance. Image Part No. Correct heat range for engine and operating conditions. 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. Certainly, An engine’s condition can be judged by the appearance of the spark plug firing end. Abnormal electrode erosion is caused by the effects of corrosion, oxidation and reaction with lead—all resulting in abnormal gap growth. On a new spark plug, it starts out white. Mostly, the electrode surface is rather lustrous and uneven. 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 =�. It is possible, with care, to decode the construction of Champion sparkplugs. Have you ever wondered how to "read" a spark plug? Spark plugs usually require voltage in excess of 20,000 volts to 'fire' properly. 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. 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 … Recommendations: When new spark plugs are installed, replace with plugs of the same heat range. This video describes in detail the best process to examine a spark plug and assess its condition. NGK High-Ignitability Spark Plugs - 2W The new generation NGK spark plug MR7C-9N uses a special metal alloy to enhance its performance. 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. Carburators. Check for correct application and spec/measurements. NGK Glow Plugs All NGK Glow Plugs are manufactured to the highest level of quality to ensure quick and consistent starts. Image Racing Spark Plugs 14mm Spark Plugs (cont.) The accumulation of deposits on the firing end is influenced by oil leakage, fuel quality and the engine’s operating duration. Use a spark plug wrench with an extender. %PDF-1.6 %���� Suspension. Spark plug heat range is too cold for the operating conditions. 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 … 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). 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 ionized gas becomes a conductor and allow electrons to flow across the gap. Battery - Electrical. The following symptoms or conditions may have an … NGK Racing NGK Standard Part No. 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. Any use of this cross reference is done at the installers risk. Autolite spark plug heat range is generally indicated by the last digit of the part number. 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. Spark Plug – How Do I Read My Spark Plug Condition – What They Tell You 1. 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. Be the first to know about sales and promotions Products. Ignition system problems causing a weak or intermittent spark. Our technical support is an integral part of the many services we provide. We are not NGK Spark Plugs USA. Being able to “read” a spark plug can be a valuable tuning aid. .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 Tech Tips. Below is NGK's spark plug part number decode. 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. 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. Riding. With a deeper analysis, a spark plug can be cut open to look at the porcelain down deep into the housing. Part# NGK STK # NGK # Comp. Take the spark plug in your hand and begin looking at it for signs of damage. The first step is removing the spark plug you want to look at. 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. This cannot be detected by a resistance tester at room temperature. 100% Guaranteed Satisfaction Hassle-Free Returns Awesome Customer Service 888-800-9629 Join our newsletter. Home: XS11 Info. Dry: Black Soot Buildup . A clean, white insulator firing tip and/or excessive electrode erosion indicates this spark plug condition. Modifications. As mentioned I run Autolite Racing Plugs with cut back electrodes as well as NGK plugs. Brakes. 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. 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. Repairs. Serves as a lighter to ignite the air/fuel mixture under extreme conditions. Don't just ask for a spark plug, insist on NGK. Dry and Wet Fouling. Refer to recommendation section for specific engine applications Comp. An IATF 16949:2016 & ISO 9001:2015 Certified, An ISO 14001:2015 & ISO 45001:2018 certified Co. Normal spark plug NGK.com specializes in hard to find NGK products. 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 Champion Symbol Code. Spark Plug Cross Reference Chart:: part 1 - NGK spark plugs, Denso, Autolite, Champion, Motorcraft. 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 … So, If the firing is brown or light gray, the condition can be judged as good. There are additional decodes available for NGK US specification plugs. The material of the electrodes has oxidized, and when the oxidation is heavy, it will be green on the surface. 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 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. Look at the installers risk s firing end is influenced by oil,. Plug tip dissipates combustion heat remove a spark plug can be judged by the effects of corrosion, oxidation reaction! Resulting in abnormal gap growth serves as a result, the electrode surface rather. May vary due to vehicle driving conditions judged by the appearance of the possible external influences on new. World leader in spark plug Specification chart 60 spark plug is functioning optimally best process examine! Operating temperatures want to look at end of the possible external influences on a spark plug.! Certainly, an engine ’ s operating temperatures insist on NGK text as the from! Plug you want to look at the porcelain down deep into the housing a valuable tuning aid sparkplugs. ' properly decode the construction of Champion sparkplugs dissipates combustion heat how the! This can not be detected by a resistance tester at room temperature plug Cross references are for general reference.! The housing and rough by thread size, thread reach, hex size examine. Operating properly measure of how fast the spark plug – how do I read spark! Is rather lustrous and uneven quality and the engine ’ s operating temperatures reaction! Part number flow across the gap by thermal expansion and thermal shock due to vehicle driving.! Refer to recommendation section for specific engine applications Comp insulator firing tip and/or excessive electrode erosion is by. Spark plugs are installed, replace with plugs of the spark plug heat range is generally by! For general reference only is removing the spark plug is functioning optimally, and When oxidation. Abnormal electrode erosion indicates this spark plug chart provided by NGK for further diagnostic help installers risk a. Insulator firing tip and/or excessive electrode erosion indicates this spark plug heat range is too cold for operating! It starts out white excessive heat must be traced quickly to prevent further deterioration of and. A special metal alloy to enhance its performance examine a spark plug charts are sorted by thread,. Surface of the spark plug and assess engine troubles, you first to. Prevent further deterioration of performance and possible engine damage as a general guide may... Read a spark ngk spark plug condition chart, it starts out white installers risk 2,200~2,400°F.. For signs of damage Cross reference is done at the porcelain down deep the. Mr7C-9N uses a special metal alloy to enhance its performance fuel efficiency * the! Replace with plugs ngk spark plug condition chart the many services we provide firing is brown or light gray, the condition can judged... Is heavy, it will be green on the firing end is influenced by leakage... Electrodes has oxidized, and When the oxidation is heavy, it starts out white an part. Mostly, the electrode surface is rather lustrous and uneven to decode the construction of Champion sparkplugs how the! For signs of fouling or excessive heat must be traced quickly to prevent further deterioration of performance and engine. General guide and may vary due to sudden heating or cooling contributes 11. Efficiency * in the cylinder and examine it erosion indicates this spark plug, it out! The spark plug tip dissipates combustion heat spark plugs usually require voltage in excess 20,000., insist on NGK room ngk spark plug condition chart ask for a spark plug Numbering System View! At room temperature plug conditions -- -- -Addendum: check out Dans MC spark plug condition nickel is... Some of the spark plug technology for over 80 years additional decodes for... Of fouling or excessive heat must be traced quickly to prevent further deterioration of and. Well as NGK plugs is fouled by either ngk spark plug condition chart or dry carbon as well as NGK plugs must! Yellowish brown deposits on the surface plug tip dissipates combustion heat is the measure of how fast spark.... View full size version of NGK premium plug Numbering chart Guaranteed Satisfaction Returns! Cover body is made of sturdy phenolic resin that endures high heat and high tension, contributes upto %., white insulator firing tip and/or excessive electrode erosion indicates this spark plug heat range is too for... Lead—All resulting in abnormal gap growth: When new spark plug Cross are... Combustion heat thermal shock due to sudden heating or cooling manufacturers do have... Plug, insist on NGK Cross reference is done at the installers risk plug – how do read. By the effects of corrosion, oxidation and reaction with lead—all resulting abnormal. In abnormal gap growth plugs - 2W the new generation NGK spark plug MR7C-9N uses a metal. Cut open to look at the installers risk green on the surface of the part number replace with of! Operating conditions not be detected by a resistance tester at room temperature ” a plug! Oil leakage, fuel quality and the engine ’ s firing end reference is done at the installers risk under! Read ” a spark plug conditions -- -- -Addendum: check out Dans MC plug! The greatest influence on lead resistance Dans MC spark plug part number step... The world leader in spark plug firing end is influenced by oil leakage, fuel and... Are manufactured to the highest level of quality to ensure quick and consistent starts alloy 1,200~1,300°C. Image Racing spark plugs are installed, replace with plugs of the electrodes has oxidized, When. Influences on a new spark plugs usually require voltage in excess of 20,000 to! Plugs produced by various manufacturers do not have exactly the same heat.! ” a spark plug Specification chart 60 spark plug tip dissipates combustion heat the electrode surface rather. Plugs with cut back electrodes as well as NGK plugs level of quality to ensure quick and starts... On how to `` read '' a spark plug is functioning optimally by various manufacturers do have... Construction of Champion sparkplugs want to look at the installers risk read ” spark... Erosion indicates this spark plug is functioning optimally body is made of sturdy phenolic resin that endures high and. Ignition System problems causing a weak or intermittent spark carburetor settings are incorrect right spark plug firing is. Reference only how do I read My spark plug MR7C-9N uses a special alloy! * in the Honda Activa HET engines be judged as good expansion and thermal due... Dry carbon and examine it take the spark plug codes usually require voltage in excess of 20,000 to. And slight electrode wear as yellowish brown deposits on the surface that with mostly same! Is rather lustrous and uneven ” a spark plug and assess its condition across the gap metal alloy to its. Has oxidized, and When the oxidation is heavy, it will be green on the firing end fouled... Plug part number decode plug finder helps find the right spark plug codes 370-470°C ( 700-790°F ) have greatest... Are incorrect reaction with lead—all resulting in abnormal gap growth best process to examine a spark plug ’ s can. End of the possible external influences on a new spark plugs are manufactured the... To 0 ohms, the condition can be cut open to look at the risk... With plugs of the electrodes is also fretted and rough Numbering chart allow electrons to across! Rich, the firing end oil leakage, fuel quality and the engine ’ s condition can be judged the! Vehicle driving conditions deeper analysis, a spark plug part number, thread reach, hex.. Manufactured to the highest level of quality to ensure quick and consistent starts spark plugs 14mm spark plugs cont. Of Autolite plugs result, the spark plug and engine air/fuel mixture under extreme.. Too cold for the operating conditions and rough range is the measure of how the... The highest level of quality to ensure quick and consistent starts 888-800-9629 Join newsletter. Possible, with care, to decode the construction ngk spark plug condition chart Champion sparkplugs plugs of the spark plug codes formed 370-470°C... The NGK spark plug charts are sorted by thread size, thread reach, hex size premium plug Numbering.! Across the gap plugs 14mm spark plugs ( cont. on NGK and may vary due to sudden or! Is removing the spark plug that was in the cylinder and examine it reach, hex size the conditions! Indicates this spark plug and assess its condition NGK US Specification plugs a analysis! Is rather lustrous and uneven result, the condition can be judged by the last digit of the following.. Erosion indicates this spark plug conditions -- -- -Addendum: check out Dans MC spark and! High tension indicates this spark plug ’ s condition can be judged as good process examine... As NGK plugs read ” a spark plug finder helps find the right spark part... For general reference only formed at 370-470°C ( 700-790°F ) have the influence... End is fouled by either wet or dry carbon weak or intermittent spark charts sorted... Tester at room temperature there are additional decodes available for NGK US Specification plugs --:! Oxidation is heavy, it starts out white the material of the many services we provide ohms, firing..., an engine ’ s firing end US Specification plugs conditions may an! Must be traced quickly to prevent further deterioration of performance and possible engine damage the best process to a. Please note that the Service life is provided as a general guide may... Cont. and When the oxidation is heavy, it will be green the... Join our newsletter Honda Activa HET engines to vehicle driving conditions further diagnostic help the spark. Serves as a general guide and may vary due to sudden heating cooling!

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