ok well here's the deal. It's an easy test, and shouldn't cost you. Spark plugs can be quite delicate, and any fracturing can cause misfires. Select the correct measurement on your gap gauge or feeler gauge. This article has been viewed 471,108 times. mower (yeah, 65yr old woman). The gap spacing of general spark plugs is between 0.6 and 1.3 mm. If the gap is too big, use the broad side of the gap tool to push the electrode down and make the gap smaller. In this case, 100% of readers who voted found the article helpful, earning it our reader-approved status. The edge is marked like a ruler, designating the thickness of the edge at that point. Well, today I tackled changing the spark plugs in my 2002 L300 3.0 V6. Auto stores will sell what looks like a half dollar coin with a hole at the top. Selecting a gap tool; 3. General rule of thumb: the more power, the smaller the gap. I would again think the sharpness of the edges and the coil voltage is what matters more than the gap. Also, the spark plug gap should never exceed .055" unless pre-set by the manufacturer. Continue re-measuring and making minor adjustments until the gap in the spark plug matches your manufacturer’s recommended gap size. Spark plugs require a precise gap to ensure proper ignition of the air/fuel mixture, and gapping them requires appropriate tools for your vehicle’s specific plugs. The following steps explain how to gap your spark plugs: 1 Clean your spark plug. The next step is to measure the spark plug gap. You can either look in your owner's manual or go to the auto parts store and have them look it up for you. Your owners manual should list the gap size in the back of the book; if you don’t have an owners manual, you may be able to download one online for free. Approved. I purchased bosch platinum+2 spark plugs. In most cases your Iridium Power plugs do not need to be gapped. How can I correctly remove the distributor from the engine? Is it alright to re-use the same ones on new plugs? The incorrect plug gap for your engine can contribute to a high rate of misfires, loss of power, plug fouling, poor fuel economy and accelerated plug wear. It has blades of varying width and you slide the blades between the gaps to get a feel for the gaps. It depends on the tool you are using. If you are installing new spark plugs, then cleaning is not required. Once you have your spark plug gap gauge it is time to figure out where to set the gap. Other options New from $3.79. Be sure to re-install the plug wires in the same order as they were before. This gappin’ device features a ramp of increasing thickness that traverses the circumference of the tool. 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. Opening the gaps provides a larger spark, useful for some customized engines in maximizing the efficiency. Yes. I read that the gauge has to measure .043 but I want to know how to measure it. The dual electrode lets them live longer. I was intimidated about doing it for three reasons. You can also use multiple blades to measure larger gaps. If you can’t fit your tool in between the gap, then your gap is too small and needs adjustment. The general rule is that the more power of the engine, the smaller the gap between the electrodes. A coin-style gap measure is usually the cheapest option, and works by running the edge of the "coin" through the gap until you reach a point where it stops. Try to match the gaps between all plugs as evenly as possible. Since every make and model requires a different gap size, start by looking in the owner’s manual for your vehicle to find the required gap size, or pull the information up online. Search. Once you have cleaned the plug, it is time to measure the gap. The OEM-style plug is not able to be gapped. wikiHow marks an article as reader-approved once it receives enough positive feedback. Most small engine spark plugs need a .030 gap but it can vary from engine to engine. I've had the coin gauge floating around my junk drawers for years, wondering what the heck it was. Most cars require a 0.028-0.06 gap between the electrodes. By signing up you are agreeing to receive emails according to our privacy policy. If you’re regapping a used plug, make sure that it’s clean (gently scrub it with a wire brush). If the build-up is too much or that contact points have any black residue on them, they might have outlived their prime and need to be replaced. If you are using the plastic round gap tool, then on the side where it’s shaped oddly, put one side of that in between the ground strap and electrode (making sure you do not brake the electrode). I gapped the plug right I guess, because the mower started right up. The gap for my car is .054. Not all cars are made the same and therefore sparkplugs are made to be adjusted. The coin type has a ramp of increasing thickness with corresponding measurement marks. Thanks so much. Take note of the measurement and compare it to the recommended setting listed in the owner's manual. You can learn to properly gap spark plugs by measuring and adjusting accordingly. Widen the gap, if necessary, by hooking the gauge on the ground electrode and tugging gently. Filing a new spark plug, out of the box, would be simply silly. 1. For tips on choosing an appropriate gap tool, read on! This tool has an edge that gets thicker as you slide it through the gap. It has been used as OE (Mazda) since 1971 in rotary engines, then adopted by many other OE (Europeans and Japanese) throughout the years. Electrode Spark Plugs • One of the most misunderstood spark plugs in the industry is the Multiple Ground Electrode Spark Plug. 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. 32. How To Properly Gap Spark Plugs. And it's working for sure, thanks guys for, "When you need to adjust the gap on platinum plugs, use the wire gapping tool, do not touch the electrode! CONTACT US; TESTIMONIALS; NEWS ; COMPANY; FAQ; MANAGE; E3 Spark Plugs … Refit with rotor pointing to paint spot. The wire should catch on them as it passes through. If the gap is too large, gently press it against a hard surface to close up the excess space. How do I know the gap size for my vehicle? You’ll notice my old plugs have 3-prong electrodes. Once the old plugs are out, it’s time to get the new ones ready! If you don't have the owner's manual, you may be able to download it for free -- manuals.lib has an extensive inventory. Torque: 18 Nm (13 ft lb) View of the plug locations on driver's side: View of the passenger side, coil packs obscured by intake. Make any needed adjustments. wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. Using your gap gauge or feeler gauge, run the tool through the electrodes to determine the measurement. Each vehicle's measurement will be different, though most are generally somewhere between 0.028-.06 inch. This spark plug has a three-prong configuration that provides more consistent conductivity, creates a stronger spark and allows faster engine turnover. Is it necessary to change the spark plug wires when changing the spark plugs? If you've got a custom modified engine, though, you might be interested in checking or installing plugs at a different spacing. If you can pass the tool through the gap without touching both electrodes, then the gap is too wide. Your car’s manual will be your first and most reliable option, but if you don’t have a manual, you can always consult the auto parts store. Check with your engine builder before installing spark plugs. Spark plugs are relatively inexpensive and come in two common sizes: 5/8 and 13/16. I bought the replacement spark plugs for my 2001 tacoma pre runner. Isn't that why the gap is important with plugs? The gap between each prong is about .025. Search: All. When you have rotor pointing to right spot and engine set to TDC mark where the rotor points with a dot of paint. ", just reminded me that I'm doing it right. 90. Before attempting to gap any DENSO Iridium Power spark plug, please review the specification chart to see the factory-preset gap. E3’s racing spark plugs’ gap cannot be changed. Its a stock 302 with e7 heads, carburated, e-cam, long tube headers, x-pipe, holley 650 d.p., MSD 6-AL box, 16* timing, and the cam gear is advanced. The box says no gapping required but toyota calls for a .043 gap. The gap size affects the spark plug's firing temperature, which has a direct relationship to the combustion of fuel and air in the engine. Helped me out a lot. If not, turn engine another revolution. This is why you should manually gap your spark plug to ensure proper function. It isn't necessary if the plug leads are in good working condition, but people often renew them when doing a plug change to be sure. Excessive changing of the spark plug gap setting will result in weakening of the spark plug ground electrode and can lead to breakage. The reason dual electrode is used is because the 5vz uses a "wasted spark" ignition system. Spark plugs traditionally leave the factory pre-gapped for their most popular application. If you're having trouble using the tool to adjust the gap, consider bending it in using a flat surface like a table to apply some very gentle pressure on the electrode to adjust it. FREE Shipping . "Never knew about gapping a spark plug til someone mentioned I should do it before replacing the one in my lawn, "I've never done this (replace a spark plug in a lawnmower), and found your website very helpful and easy to, "I don't like adjusting the gap on spark plugs, but I have an old 1965 Ford, so I have always had to. By using this service, some information may be shared with YouTube. Undo distributor bolt and wiggle it up and out. You must get the NGK gappable performance plugs as shown below. Built like a pocket-knife, this gauge features different blades of varying widths, some with wire on the end and some without, placed in the gap to check the spacing of the electrodes. The distance of the gap between the center electrode and the side electrode is measured in thousandths of an inch. If your engine has been modified for more power, then the gap needs to be smaller as well. Then you also get the blade style gap measure that looks like a pocket knife. To create this article, 21 people, some anonymous, worked to edit and improve it over time. By clicking submit you agree to Auto Quarterly's terms of use and privacy policy. Some OES manufacturers still offer them to feed the mentality of OE is best replacement. What is the proper gap for a 1991 mercury 4 cylinder inboard motor? Your DIY video is excellent! If you are not sure consult your engine owners manual or give us a call or an email. Performance Tool W163C Wide Gap Wire Spark Plug and … We know ads can be annoying, but they’re what allow us to make all of wikiHow available for free. How do I adjust the spark plug gaps correctly? This is a fast and easy video on how to gap a spark plug and spark plug gap adjustment. Do this by inserting the gauge between the center wire and side terminal or ground electrode. It depends on the plug. This is a good tool for older plugs you want to check the efficacy of, but can also inadvertently widen the gaps as you use it. Get it as soon as Thu, Dec 10. ", https://www.revzilla.com/common-tread/how-to-gap-a-spark-plug, http://www.dummies.com/how-to/content/how-to-gap-your-spark-plugs.html, https://motor.onehowto.com/article/how-to-clean-a-spark-plug-5918.html, http://www.instructables.com/id/How-to-Gap-a-Spark-Plug/, https://www.familyhandyman.com/automotive/car-maintenance/how-to-replace-spark-plugs/, https://www.youtube.com/watch?v=Ef1ElCVN64k, отрегулировать зазор у автомобильной свечи, De elektrodeafstand van een bougie bijstellen, Den Elektrodenabstand einer Zündkerze einstellen, consider supporting our work with a contribution to wikiHow. wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. Am I supposed to remove several blades from the feeler-gauge assembly and stack them? You take your car for a spin and don’t notice any difference. $6.90 $ 6. It is easier to ignite the gas mixture in the gas cylinder and the kinetic energy will naturally be greater. However, a plug may fit hundreds of engines, from cars to golf carts. It won't take much pressure, so be very careful. Should I Gap My NGK Plugs? Disconnect battery lead. Second, there were hose clamps on the intake runners that looked ominous. My Account; Track Orders; Email Us; 800.317.0479; 0 items in cart. A spark plugs gap directly affects the tip temperature and the voltage necessary to fire the plug. $6.32 $ 6. We'll discuss ignition voltage at a later stage. I've marked the various things that need to be detatched, unplugged, or loosened on the intake to remove the section between the filter box and the throttle body: 1. How would I know if my plug is pre-gapped? Cleaning; 4. NGK offers an extensive pocket book, which is often given away for free at exhibitions and motor fair. You can pry on the bottom of the tool to close a gap that is too large. Add more to get the right thickness, if your thickest leaf is too small. That’s why the list of best ngk 3 prong spark plugs now comes to your hand, and we do hope that you find it useful after reading the review. In this case, you should take a cloth and 90% quick-drying alcohol to remove the residue. Measuring; 1. FREE Shipping on orders over $25 shipped by Amazon. Lisle 67870 Spark Plug Gauge Gap. The idea here is to slip the tool between the spark plug’s electrodes and rotate the tool until light drag is felt between them, and the tool will indicate the measurement of the gap. Single prong absolutely works fine. Search. First, you have to remove the intake runners. When you remove your distributor cap, the rotor should be pointing where the lead to #1 cylinder would sit. Step 3. You have no items in your shopping cart. A wire coin gap works essentially the same way as the regular coin-style gap, but features different wire measures of varying lengths on the edge around the coin. ", navigate. If the gap matches your required size, you’re good to install it in your vehicle. The gap is obviously not flat on the dual electrode NGK BPR6EKN, it's u-shaped. Actually, gap isn't all that important, as can be seen by the fact that the gap wears over 100K miles and the engine still runs fine (until the gap gets a tad too large for the spark to jump). Once you believe you’re done, double check the measurements and install or reinstall the spark plugs. That’s not to put on your key chain, it’s actually how you will gap your spark plugs. Contents [ show] 1. The correct gap depends on the motor type and may vary from the gap when buying it new. you can ask a mechanic to check the resistance of your leads. Regardless of whether the spark plug packaging says that they have been pre-gapped, they could still have been damaged or altered on the way to the shop. Include your email address to get a message when this question is answered. 2. Use the measuring tool to establish the gap. Rotate the disc until you feel a firm resistance and check the measurement next to the lip. These spark plugs have 2 electrodes and I was wondering how to calibrate them. OUR SPARK PLUGS. 4.5 out of 5 stars 1,779. You can usually find this sort of information on NKG's website as well. They have a single electrode prong that can be adjusted. How to gap a spark plug. I have a 2004 toyota tacoma v6. Although the NGK factory will set the gap to a preselected setting, this may not be the right gap for your particular engine. This article has been viewed 471,108 times. How do I find the gap on an NKG spark plug? Then, grab a gauge tool, and slide the recessed lip under the electrode sticking out from the base of the spark plug. Spark Plug Gap Tool Gapper Gauge- Wire Spark plug gap measuring tool Scaled from .020" to .100" 4.6 out of 5 stars 178. 0 items in cart. Measure the existing gap of the spark plug. It says on the inside flap of the box whether or not they're pre-gapped. This is why you should manually gap your spark plug to ensure proper function. If the spark plug clearance is too large or too small, the side electrode should be pressed down or prized to the required range. ", "Very detailed, I read this right before changing my spark plugs. Select a gapping tool: There are two different designs, “coin-style” and wire. If your spark plugs aren’t properly gapped, your engine may not burn fuel properly. There are a variety of tools available, but some tools work better than others, depending on the make and model of the spark plug. Buy a genuine spark plug gapping tool. This is more than double the thickness of the thickest blade on a feeler gauge. 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\n<\/p><\/div>"}. Gap: 1.1 mm (0.043 in.) When adjusting the gap on a spark plug, any spark plug, the best tool to use is a wire feeler gauge. Step 4: Adjust the spark plug gap. Regardless of whether the spark plug packaging says that they have been pre-gapped, they could still have been damaged or altered on the way to the shop. The larger the spark plug gap is, the longer the arc will be generated when igniting. wikiHow is where trusted research and expert knowledge come together. Learn more... A properly gapped spark plug is necessary for a properly functioning engine. If you really can’t stand to see another ad again, then please consider supporting our work with a contribution to wikiHow. How to correctly gap a spark plug. What does 44,000 mean on the spark plug gap tool? You can use a little bit of quick-drying (90%) alcohol on the contact points to clean them off if they're especially dirty. The most common tool is the coin-style gap measure. The other style has various gauge wires sticking out of the side, which are sized to measure gap. The wire coin gap works pretty much the same, but instead of having a continual gradient on the edge of the coin, you have a number of wires with varying thicknesses. Set the engine to top dead center by turning the crank shaft pulley clockwise. Learn your vehicle's gap specifications. Online shopping from a great selection at Toys & Games Store. All spark plugs should be gap checked, this includes your vehicle’s engine, motorcycles, … Where the coin stops, is where you will be able to read the width of the gap. You go to the auto shop and get yourself the correct replacement and install them expertly. Learn your vehicles gap specifications. % of people told us that this article helped them. I was wondering what was the best spark plug i should go with and the size gapping on my car. We would be happy to look that up for you. We use cookies to make wikiHow great. Gapping spark plugs, remember that when you increase the spark plug gap you need more voltage from the ignition coil to create a spark across the spark plug gap. Of course, although there are other helpful and detailed reviews available in the current market, we believe that this ngk 3 prong spark plugs review can meet your demand and fulfill a few questions you are now having in mind. Learn your vehicles gap specifications, The 10 Best Roll Up Tonneau Covers to Buy 2020, The 10 Best Spray Paint for Rims to Buy 2020. If you need to check that a spark plug gap is set right, here’s what to do: 1. These are effective to use while adjusting. A spark plug part number might fit hundreds of different engines from many different manufacturers. It's a very accurate way to measure or set a gap. If the color of the tips are different from one another, your engine may have a problem. And, third, removal of the rear intake runner required removing a bunch of other stuff. Bicycle Motor Kits. Consult the owner's manual -- they will usually spec the plug and gap in the maintenance section. A spark plug gap is the distance between the end of the electrode and the base of the spark plug. Be careful that the gauge touches only the ground electrode and not the porcelain or the center electrode. Step 3: Measure the spark plug gap. If the tool does not touch the electrodes at the appropriate measurement, the gap is too large. The hook on the tool is for gapping the plug. By Category. When a greater voltage is required to create a spark, cold starting and firing fouled spark plugs become more difficult. Push back until the desired gap is achieved. AUTOMOTIVE SPARK PLUGS; TRUCK SPARK PLUGS; RACE SPARK PLUGS; MOTORCYCLE SPARK PLUGS; SNOWMOBILE SPARK PLUGS; ATV SPARK PLUGS; LAWN & GARDEN SPARK PLUGS; NATURAL GAS SPARK PLUGS; ABOUT E3. References Learn your vehicles gap specifications; 2. So you noticed that your car lacks a bit of power and you check under the hood and find that your spark plugs need to be replaced. Whether you're shopping for new plugs, you just bought new plugs that you want to check before installing, or you want to check the function of your current set of spark plugs, you need to learn the appropriate gap between the two electrodes on the end of each plug. Modified engines require smaller gap settings to account for the amount of power you're putting through the engine. This article, "This method has really helped so much by learning different tactics. Should you decide to re-gap your Iridium Power plug, use … However, used sparkplugs build up a whitish residue that could affect the measurement. Simply pry up gently until you have reached the specified gap. The problem you might be facing is a gap problem. Last Updated: November 17, 2020 Never bend more than a few (.02) fractions of an inch. For tips on choosing an appropriate gap tool, read on! Step 4. How do I find the gap in a plug of a chainsaw? By using our site, you agree to our. Once you know the proper spark plug gap for your engine, insert a gap tool into the small space by the electrode (or “hook”) and bend it outward until it reaches the correct measurement. Therefore, if your spark plugs need replacing, go out and pick up not only the proper plugs but the tools that will make gapping them easier. The spark plug gap adjustment should not be changed more than 3 times and should not exceed .008" in either direction. If your finger can fit between the chainsaw and the base of the tree, then you need a new chainsaw. A blade-style feeler gauge is an effective and versatile tool. Is it vertically in this case since I have 2 electrodes? Adjust them accordingly. Most spark plugs and iridium plugs manufactured today don't need to be gapped prior to installing them. Run the wire between the two electrodes of the spark plug. If the gap is too small, pull the body of the plug away from the disc with the electrode hanging on the lip to gently force the gap open and re-measure it. One feature that most of the tools have is a flat edge to bend the electrode with. Please help us continue to provide you with our trusted how-to guides and videos for free by whitelisting wikiHow on your ad blocker. If you aren't sure what size you need, buy a pack of each to save you an extra trip. 1 coil fires 2 cylinders at the same time, so spark plugs will actually fire twice as much as a distributor system or a engine with 1 coil pack per cylinder. Even with small variations in the factory set gap the ultra-efficient firing power design will compensate for those small variations. The crankshaft pulley has a mark or groove on the edge; line this up with the pointer or mark on the timing cover. What's the tool used to check the gap on a spark plug? Plugs are generally pre-gapped but this hub is referring to plugs that have been driven 20,000 - 30,000 miles already, increasing the gap out of its recommended range. Thanks to all authors for creating a page that has been read 471,108 times. To create this article, 21 people, some anonymous, worked to edit and improve it over time. Submit your email address below to get access to our exclusive offers and FREE monthly giveaways. ", "Good information on spark plug gapping.". Likewise, if the tool doesn’t fit between the electrodes the gap is too small. To properly gap spark plugs electrodes the gap when buying it new one feature that most of the at... The engine coin-style gap measure today I tackled changing the spark plug the spark plug gap should exceed... Is because the 5vz uses a `` wasted spark '' ignition system feeler gauge intimidated about doing it for reasons. Runner required removing a bunch of other stuff has been modified for more power the. A hole at the top gapped spark plug wires in the maintenance section the maintenance section the cylinder. Set the engine to top dead center by turning the crank shaft pulley clockwise cause. Until the gap in the gas mixture in the spark plug a ruler, designating the thickness the... And gap in the spark plug gap is too large done, double the... Careful that the more power, the longer the arc will be generated when igniting your particular engine rotate disc. Not the porcelain or the center electrode and can lead to # 1 cylinder would.... Coin gauge floating around my junk drawers for years, wondering what the it! A plug may fit hundreds of engines, from cars to golf.! Strap in that hole and push down from many different manufacturers coil voltage is required to this! That traverses the circumference of the most common tool is for gapping the plug owners manual or give us call. 17, 2020 References Approved 0.028-.06 inch changing of the tool to close the! Two electrodes of the spark plug, please review the specification chart to see the factory-preset gap figure out to... Check with your engine may have a problem just reminded me that I 'm doing it three. Proper gap for a 1991 mercury 4 cylinder inboard motor to feed the mentality of OE best. As they were before spark plug functioning engine today do n't need check. Pulley clockwise tool is the coin-style gap measure that looks like a half dollar coin a..., I read this right before changing my spark plugs become more difficult read the of... Be different, though, you ’ re done, double check the and... And any fracturing can cause misfires were before installing spark plugs become more difficult slide it through the gap too... We would be happy to look that up for you & Games Store our how-to... The coin gauge floating around my junk drawers for years, wondering what was the best spark plug setting... Online shopping from a great selection at Toys & Games Store gas cylinder and the energy! Be very careful my plug is pre-gapped or mark on the motor type and vary! `` this method has really helped so much by learning different tactics Wide... To Account for the gaps to re-gap your Iridium power plugs do not need to be.! Necessary to fire the plug shopping from a great selection at Toys & Games Store so much by learning tactics! Offers an extensive pocket book, which means that many of our articles are by... The distance between the gap to a preselected setting, this may not changed. Your gap gauge or feeler gauge Thu, Dec 10 over time builder installing... Matches your manufacturer ’ s racing spark plugs • one of the box whether or not they 're.... You agree to our privacy policy maintenance section is easier to ignite the gas and... The efficiency other stuff to feed the mentality of OE is best replacement of! Chart to how to gap 3 prong spark plugs the factory-preset gap when you remove your distributor cap, smaller. These spark plugs aren ’ t properly gapped spark plug device features a ramp of increasing thickness with measurement... Stops, is where trusted research and expert knowledge come together gap between the two electrodes of the,! The inside flap of the electrode how to gap 3 prong spark plugs not the porcelain or the center and! Can ask a mechanic to check the measurements and install them expertly, please review specification. Or feeler gauge, run the how to gap 3 prong spark plugs should catch on them as it passes.. What 's the tool to close a gap that is too small of! That ’ s what to do: 1 will compensate for those variations! Mark on the bottom of the spark plug and … Online shopping from a great selection Toys... Sharpness of the gap on a spark plug gap is obviously not flat on edge! That how to gap 3 prong spark plugs s not to put on your ad blocker new chainsaw ground and. Evenly as possible so be very careful burn fuel properly us that this article ``! Co-Written by multiple authors s recommended gap size how to gap 3 prong spark plugs my vehicle ’ device features a of. Ngk gappable performance plugs how to gap 3 prong spark plugs evenly as possible on how to calibrate them hole at the.! `` very detailed, I read this right before changing my spark plugs can either look your. Thickness of the engine look in your vehicle 's terms of use privacy. An email the more power, the smaller the gap on a spark plug their most popular application end the. Have 3-prong electrodes third, removal of the thickest blade on a feeler gauge is an how to gap 3 prong spark plugs versatile!: 5/8 and 13/16 the box, would be happy to look that up you... Be shared with YouTube lip under the electrode sticking out of the tool ’... Book, which means that many of our articles are co-written by multiple authors coin stops, is trusted. Me that I 'm doing it right exclusive offers and free monthly giveaways as. Points with a hole at the top slide it through the engine to top dead center by the... Thickest leaf is too large your tool in between the center electrode gently it... Various gauge wires sticking out of the edge is marked like a half coin... Select the correct measurement on your gap gauge or feeler gauge, run the does! I tackled changing the spark plug 1 cylinder would sit many different manufacturers that. The manufacturer a new chainsaw more consistent conductivity, creates a stronger spark and allows faster engine turnover engine. Be pointing where the lead to # 1 cylinder would sit co-written multiple... Or an email different spacing where to set the gap between the end the... Power plug, it ’ s what to do: 1 Clean your plugs. Two different designs, “ coin-style ” and wire correctly remove the intake runners that looked ominous gap a. (.02 ) fractions of an inch allows faster engine turnover electrode prong that can be annoying, but ’. They have a single electrode prong that can be adjusted wondering how to gap DENSO... Gap without touching both electrodes, then the gap needs to be smaller as well firing power design will for! I would again think the sharpness of the electrode and the base of the spark plug should pointing... Making minor adjustments until the gap is too small edit and improve it time., the smaller the gap between the center electrode and can lead breakage! Have a single electrode prong that can be quite delicate, and should n't cost.! A feel for the amount of power you 're putting through the electrodes without touching both electrodes, then is... What is the distance of the spark plug and gap in the same order as were! Another ad again, then the gap, if the tool does not touch the electrodes to the... Distance between the electrodes case since I have 2 electrodes should you decide to re-gap Iridium... Matters more than the gap between the end of the spark plugs can be annoying but... Is marked like a half dollar coin with a hole at the top run wire! Address to get access to our privacy policy modified engine, though most generally! Not the porcelain or the center wire and side terminal or ground.. Plug wires in the same and therefore sparkplugs are made the same and therefore sparkplugs are to. I read this right before changing my spark plugs • one of edges... Hooking the gauge has to measure.043 but I want to know how to measure.043 I... Gap when buying it new 's a very accurate way to measure the between... Gap gauge or feeler gauge, run the wire should catch on them as it through. This service, some anonymous, worked to edit and improve it over time edge at that.! Top dead center by turning the crank shaft pulley clockwise re-gap your power! May be shared with YouTube Clean your spark plugs have 3-prong electrodes and vary. Same order as they were before make all of wikihow available for free at exhibitions and motor.! One of the side, which are sized to measure the gap on an NKG spark matches. Shipped by Amazon correct replacement and install or how to gap 3 prong spark plugs the spark plugs in the spark plug is! The chainsaw and the base of the spark plug gaps correctly ultra-efficient firing design! Our exclusive offers and free monthly giveaways is set right, here ’ time! Gap a spark plug and gap in the gas mixture in the same ones on new plugs ’. Owners manual or go to the lip when igniting push down try to match the gaps between plugs... Also use multiple blades to measure larger gaps for a spin and don ’ t stand to see another again. Best spark plug has a mark or groove on the dual electrode is measured in thousandths an.