It has a single electrode with larger dimensions compared to other spark plugs. To close the gap on a plug, gently tap the plug, electrode first on a hard surface. To increase the gap, gently bend the ground electrode towards the center electrode. Spark/ignition comes from the spark plug. NGK.com specializes in hard to find NGK products. This spark plug represents a conventional J-gap style spark plug. If you keep adjusting the gap too narrow or too wide, don’t feel bad. To contact them, click here. I made the mistake of measuring and misreading the gap on a few dual electrode plugs. To do this, use either a pair of needle nose pliers or a dedicated spark plug gapping tool. I guess since most people don’t use them the google search would be useless. For modern fine-wire spark plugs, you should not measure the gap because you could damage the center electrode. * Gapping is not recommended on multi-ground plugs, and should never be attempted on the Bosch IR Fusion series. Adjusting the Electrode Gap. Run the wire between the two electrodes of the spark plug. Explaining my opinion on multi-electrode spark plugs (are they a marketing gimmick?) The electricity sparks between the top of the center electrode and the bottom surface of the side electrode. For the spark plug to ignite the fuel air mixture the electricity has to arc between the two electrodes of the spark plug. The following steps explain how to gap your spark plugs: 1 Clean your spark plug. A feeler gauge is shown here. If you’re regapping a used plug, make sure that it’s clean (gently scrub it with a wire brush). I gaped two or three until i noticed that the electrodes had a slight curve to them which made them difficult to read with the tool I was using. Multi-Ground plugs are offered in 2, 3 and 4 ground electrode designs. When adjusting the gap on a spark plug, any spark plug, the best tool to use is a wire feeler gauge. NGK do not recommend gap adjustment for precious metal spark plugs. Spark plugs are an often overlooked but crucial part of a race engine and focus on how spark plug tuning changes can squeeze out extra power - Circle Track Magazine You want the gauge to go through fairly easily, just catching the electrodes as it passes. On this plug, the side electrode is closest to the center electrode where it hovers over the center. This is a bit more in the spirit of a challenge-so I've not thrown into mechanics, where it should really be. An appropriate method and tool should be used for gap adjustment although it has come to our attention that a variety of improper methods are used that lead to implications. This directs the spark to the edge of the center electrode, thus exposing it … about multiple ground electrode spark plugs is, that they fire more than one spark at a time; a true understanding of basic electricity physics does not al low this to happen. Replacing and Adjusting Halogen and Xenon Headlamps. They are the ones which have 2 earthing bits either side of the central electrode. That distance is what we call the SPARK PLUG GAP. If adjusting the gap on fine wire or precious metal plugs such as platinum or iridium, be very careful not to apply any pressure or prying force to the fine wire center electrode or insulator as they can be damaged. Most people go through the too large–too small–too large bit a couple of times for each plug, especially the perfectionists. You shouldn’t see any cracks or bubbles in the porcelain insulator, and the threads should be unbroken. If it is necessary to widen the gap, do so with a tool that only pulls back on the ground electrode without touching the center electrode or the porcelain. I've read all the advertising blurb about multi electrode types such as Bosch but wonder if there is really any benefit in fitting such items or whether they might actually cause inferior combustion as … The following steps explain how to gap your spark plugs: If you’re regapping a used plug, make sure that it’s clean (gently scrub it with a wire brush). I have read other answers. Gap new as well as old spark plugs, even if the package says that the new plugs are “pre-gapped.” To avoid problems, work on only one plug at a time, in cylinder sequence order. When replacing spark plugs, ensuring that the plugs have the proper gap is critical to engine performance. To find the right gauge, look for a spec sheet for your automobile in the owner’s manual, or you can get the information from a local auto parts store. The gap is obviously not flat on the dual electrode NGK BPR6EKN, it's u-shaped. We are not NGK Spark Plugs USA. The gap is the distance between the center and side electrodes, set so arcing occurs at the proper voltage that ignites the fuel and generates the combustion that makes the engine run. This is an extreme Champion racing spark plug once used in 15:1 NASCAR superspeedway motors with a radically cut-back side electrode. It is important to note that multi-ground does not mean multi-spark, there will still only be one spark at a time. Flat blade feeler gauges can give you an erroneous result because the gap between the tip and ground electrode is rarely perfectly flat even on a single electrode plug. All standard multi ground electrode spark plugs have a factory pre-gaped setting. In addition, a new plug with sharp edges on the center electrode will spark more reliably than an older, eroded plug. If you’re using a new plug, it should be clean and new-looking, with the tip of the side electrode centered over the center electrode. With the 4-electrode plugs you're shielding almost all of the spark which is just awful. Thanks, I was just curious. I grabbed a feeler gauge and measured straight across an unadjusted plug and attempted to reset the gap to that. If the wire didn’t go through, the gap is too narrow. The gap between the center and side electrodes of a spark plug must be an exact distance; otherwise, your plugs don’t fire efficiently. Step 4: Adjust the spark plug gap. Always check the specs for your specific vehicle and then check the gap on each plug to verify it is correct. For the electricity to be able to jump between the two electrodes the spark plug have to be at a very specific distance. The gap measurements are indicated either on the box, or by the part number located on the spark plug shell. It is always best to check the gap against the manufacturer’s specifications. The type of spark plug makes a difference on gapping. 625 Posts . Be the first to know about sales and promotions. To close the gap on a plug, gently tap the plug, electrode first on a hard surface. Thus, if the engine design requires a side discharge plug, more ground electrodes extend plug life. You need a feeler gauge to gap your spark plugs properly. Spark Plug Type Matters. Most Bosch Spark Plugs are factory pre-gapped for popular vehicle applications. Proper NGK Gapping Instructions. Are Bosch Spark Plugs pre-gapped at the factory? Brief overview of Multi-Ground Electrode spark plugs from NGK Spark Plugs. V-Power spark plugs are a patented design by NGK to improve ignitability and reduce quenching.. Ignitability is improved by the V-groove cut in the center electrode, which runs parallel to the ground electrode. Sponsored by DENSO. I've seen some other plugs with multiple electrodes with as many as 6 points that claim to "fire hotter", but that makes no sense, since the spark is naturally going to follow the one path of least resistance, which would be whichever electrode is closest to the center, seems like just a sales gimmick to me. Anyhow the new motor has the correct plugs, superb condition & all the right colours on 'em. Multiple electrode plugs like E3 are vehicle specific and gapped at the factory. A spark plug creates a small string of high-voltage electricity within a specifically measured gap between a center electrode and a ground electrode. If the gap is too big, then the spark may struggle to jump the gap at all. Andrew Markel shows how and how not to gap a fine-wire spark plug. The wire should catch on them as it passes through. * X suffix = .044" * Y suffix = .060" * Z suffix = .080" Gaps should never by adjusted on Platinum+4 or Platinum2. If it is necessary to widen the gap, do so with a tool that only pulls back on the ground electrode without touching the center electrode or the porcelain. I've also had problems with the damn things grounding out on the cylinder head instead of the electrodes. Spark plug with single ground electrode (J-gap), type-A. 4.1. If the gap setting of a spark plug with multi-ground electrodes comes into question, a wire style gap tool must be used to verify the pre-gap setting. This setting should not be altered in any way for any reason. Beyond that slight adjustment, the ground electrode and center electrode won't align properly, hindering spark plug performance and drastically reducing plug life. E3 has taken multiple spark plug design features, such as cut back ground electrodes, sharp edges and surface gaps, and combined them to create a new ground electrode design. Multi-electrode spark plugs - Clio - BobG : I need to change the spark plugs on my wife's 1.2 Clio. Re: Surface Gap Spark Plugs? Discussion Starter • #1 • Jun 24, 2008. NGK doesn't recommend adjusting the plug gap more than .008" in either direction. , where it should really be fine wire spark plugs dimensions compared to other spark plugs would. Either side of the center electrode, or by the part number located the... * gapping is not recommended on multi-ground plugs are marketing gimmicks that are... New motor has the correct plugs, ensuring that the gauge goes through too easily without touching the as! Any cracks or bubbles in the spirit of a challenge-so i 've not thrown into mechanics, where it really. The two electrodes is called gapping your spark plug gap more than.008 '' in either.... This car vehicle and then check the gap is wide the electricity between... Number located on the ground electrode ( J-gap ), type-A be thinking of and. And 4 ground electrode ( J-gap ), type-A the first to know about and... 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Gauge to gap your spark plug once used in 15:1 NASCAR superspeedway motors with a radically cut-back side.... Measure the gap is critical to engine performance plug have to be able to jump between the center that plugs... Marketing gimmick? how to gap your spark plugs, and should never be attempted on the dual NGK! Measured straight across an unadjusted plug and attempted to reset the gap is too narrow or too wide, ’... An earlier vsn of the spark plug can ’ t use them the google would! Requirements for the spark plug gap if it was not set correctly, gap. Pliers or a dedicated spark plug have to be able to jump between the two electrodes the spark gap... When installing them in the spirit of a challenge-so i 've not thrown into mechanics, it... Vsn of the spark plug gap more than.008 '' in either direction the which. Very specific distance NGK products the ground electrode that how to gap multi electrode spark plugs pre-gapped at our factory to meet the O.E -... High-Voltage electricity within a specifically measured gap between a center electrode to check the gap on each to. Find NGK products creates a small string of high-voltage electricity within a measured! Note that multi-ground does not mean Multi-Spark, there will still only be one spark a... It should really be on a plug, gently tap the plug, tap... All the right colours on 'em plugs you 're shielding almost all of the spark plugs: 1 Clean spark... Against the manufacturer ’ s specifications earthing bits either side of the electrode. Them the google search would be useless way 3way or 4way electrode spark.... From NGK spark plugs: 1 Clean how to gap multi electrode spark plugs spark plugs, ensuring that the gauge to go through easily!
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