Given the rather affordable price of new plugs, it could be a case of cheap insurance to toss in a new set. Traditional Single Iridium Plugs   Denso's Iridium Power and NGK's Iridium IX series have iridium fine-wire center electrodes with tranditional nickel ground electrodes. Iridium IX ® plugs are an excellent upgrade from standard nickel plugs. Opportune Times To Replace Spark Plugs. Mercedes VW Ignition Coil and Spark Plugs Wire Kit (7mm) (4 Pieces) (Iridium Power) (Gap 0.044) 6N0905104 - Denso 4011799KIT Mercedes-Benz OE: 0031594603 Porsche OE: 99917015690 , 9991701899A SAAB OE: 5962485 , 8350076 When Is It Time To Replace My Spark Plugs. So, an investment in these spark plugs would surely be worth it for this. The tip of the spark plug should be relatively clean. Perfect, uninterrupted spark formation allows the engine to work better. The recommended replacement intervals are posted in the Maintenance Schedule, which can be found in the owner's manual or in a separate Warranty and Maintenance brochure for your car. In this article, we seek to tackle the commonly asked question, "How often do I really need to replace my spark plugs?" I called Toyota to ask what was the correct spark plug change interval. It is estimated that iridium spark plugs will last for at least 60,000 miles. Since then it's been cars all the time." That’s why spark plug replacement is carried out at 3-4 MOTs, namely 45,000-60,000 km. If longer service intervals of 100,000 or more miles are recommended, we'd say check at the halfway point to see how things look. Iridium’s extremely high melting point is perfectly suited to today’s high-temperature engines, delivering outstanding acceleration, fuel efficiency and durability. Note that aluminum cylinder heads are more prone to this issue, but any engine can be affected. While the traditional tune-up has gone the way of the rotary dial phone thanks to advanced electronics, it still is a good idea to check and replace the few remaining engine service items at regular intervals. On some vehicles, notably older ones, it couldn't be simpler: open the hood, and there are the plugs, which only require plug wire removal before you can put a socket on them. The Iridium IX ® spark plugs are a single precious metal aftermarket performance plug. While the traditional tune-up has gone the way of the rotary dial phone thanks to advanced electronics, it still is a good idea to check and replace the few remaining engine service items at regular intervals. Copyright © 2003-2020 CARiD.com. Change spark plugs ONLY when your engine is completely cool. Incorporated with the platinum material is also nickel and iridium — resulting in a higher resistance to cracking. Iridium is harder, more durable, and more costly since you will be paying for the longer lifespan, and you will not have to replace the spark plugs as much as other options, like copper. All rights reserved. If your spark plugs are on their last leg, they’ll take it out … The distance between these two points is known as the gap, and electricity travels between them whenever the spark plug fires. We describe a spark plug's firing as a miniature bolt of lightning because there's really no better way to liken it. If you have good access to the plugs, one of the best ways to check them is to physically inspect them. You’re filling up the gas tank more often. With over 30 years of experience working on cars Product Training Director Richard Reina is known around the office as one of our technical experts & true a "car guy". So, what spark plug to put in the car? Today, we’re still going strong with iridium spark plugs that perform under pressure. Bosch Iridium Spark Plugs are engineered to deliver both high performance and long life, representing the best of OE spark plug technology with a 7 year satisfaction guarantee View Details Denso Iridium Spark … His interest began, in his own words, "at the age of two when his dad taught him the difference between a Chevy and a Ford. Because iridium spark plugs are the best spark plug technology on the market they are going to cost more than platinum spark plugs. Iridium composition has the highest melting point and strength of … However, they’ve been known to go up to 80,000 miles, or even 120,000 miles, depending on the vehicle. If you're lucky, the plastic cover pops right off, and the plugs can be accessed once the coil pack is removed. related article on performing a tune-up which covers the removal process). More specifically, they conduct electricity derived from the engine's ignition system - using it to create a small bolt of lightning to ignite the air/fuel mixture sprayed into each cylinder between the compression stroke and power stroke. Another metal piece known as the "ground electrode" protrudes from the bottom of the threaded area, curving around and ending directly under the center electrode. Spark plugs do require maintenance and replacement, but there’s no specific rule of law as to when they need servicing. This advantage occurs because there is a faster response to your throttle operations. When does the timing chain need to be replaced? Bosch Iridium Spark Plugs are engineered to deliver both high performance & long life using an ultra fine wire design & a laser welded ground electrode to spark and ignite the fuel in your car. Another way to test your wires is to examine your engine compartment at night, with the engine at idle. OE Iridium Long Life Plugs NGK Laser Iridium and Denso Long-Life Iridium plugs feature an iridium tipped fine wire center electrode, and platinum tipped ground electrode. As an avid enthusiast of just about all things with a motor Richard can answer just about any question related to vehicle maintenance, repair, or restoration & is a trivia expert in motor history. When looking at iridium vs. platinum spark plugs, the sure bet is that iridium is the most durable and will last the longest. You may never actually have these … We discuss how to know when your plugs really need replacement. Yes, if it is the scheduled time for spark plug replacement. Iridium Spark Plugs Clearance and Resistance If this happens, the plugs are difficult (if not impossible) to remove without breaking them apart - requiring extra labor and/or cost to get them out. Iridium spark plugs give absolutely no improvement in the performance and mileage of the bikes, period. As the coating wears down, the gap between the center electrode and the ground electrode widens - reducing the potency of the spark. Application in manufacturing of iridium spark plugs improves characteristics of a plug in times. Every 20,000 to 30,000 Miles 30,000 miles has been accepted for years as the most common replacement interval. Automakers may or may not specify a recommended replacement interval for spark plug wires, but a good set will typically last 60,000 miles. Even if you haven't reached the full mileage interval between recommended plug changes, pay attention to how your vehicle runs. It is okay to replace one spark plug if it is fouled or damaged prior to scheduled maintenance, provided the source of the damage is found and corrected. When you make the switch to iridium spark plugs, then you may notice an immediate improvement to your acceleration profile. You’ll be able to feel the difference immediately, especially if you have put some miles on your older plugs. Thanks to its strength, iridium spark plugs can last up to 25% longer than comparable platinum spark plugs. Depending on spark plug types and automakers using them, replacement intervals are specified at anywhere from 30k to 120k. a large plastic cover, with no hint as to where the plugs may lie. In other cases, just getting to the plugs involves considerable time in removing additional shields, covers, brackets, and so on. Iridium spark plugs . The ground electrode will wear out first. If your engine is equipped with spark plug wires rather than individual ignition coils, observe the condition they're in as you remove them to access spark plugs. I found a Toyota spark plug pdf for 2011 that shows late 1990s and newer models of cars, trucks and suvs and about what spark plugs are used. Even today, low quality spark plugs or those made with a less durable material (such as copper) should be replaced every 20,000 to 30,000 miles. catalytic converter failure is unburned fuel going out the exhaust. Iridium spark plugs feature a fine wire center electrode that is designed to conduct electrical energy better and increase firing efficiency. When it comes to spark plugs, the elephant in the room is spark plug access. On our 21st century cars, this is limited to air filter, fuel filter, and spark plugs. Ford Ranger 1998-2011: problems to watch out for, engines, 4WD system. Understanding The Different Types of Spark Plugs. By this, we mean the plugs can chemically react with the metal in the cylinder head, becoming seized in place. When does the timing belt need to be replaced. These spark plugs have many benefits: Smaller center means higher firing performance; Iridium has a 1200ºF higher melting point over platinum; Iridium plugs last up to 110,000 miles longer than conventional spark plugs; Recommended Replacement This includes intervals of 30k, 60k, 100k, and even 120k miles. If you've noticed any of these running conditions, we recommend pulling one of your plugs out for examination (see our They are a great option for modified engines, and where recommended, are appropriate replacements for OEM spark plugs. Understanding The Different Types Of Spark Plugs, Pickup Truck Cab And Bed Sizes Are Important When Selecting Accessories, Six Affordable Engine Upgrades for the DIY Enthusiast, When You’re Running Hot: Performance Cooling System Upgrades, Other Factors That Can Affect Spark Plug Life, Understanding The Different Types of Spark Plugs. If you find oil on the plug and the engine is otherwise running okay, investigate the source of the oil. And because lightning bolts, regardless of size, are destructive in nature, the ones occurring inside your engine take a toll on spark plugs over time. A look at ten of the best-selling vehicles in recent years shows a range of recommendations for spark plug change intervals based on the type of plugs engineers chose to use. Iridium Toyota Spark Plugs. If it's been awhile since you've changed your spark plugs, they're probably more worn than you suspect. When should struts and shock absorbers be replaced? Look for the common warning signs that spark plugs are at the end of their life span. If your vehicle owner manual recommends replacement at 30,000 or 60,000 miles, inspect the condition of the plugs when you reach about two-thirds of that mileage. Iridium spark plugs have extremely fine electrodes while retaining excellent wear characteristics. However, the actual timing of replacement will vary depending on other factors. It's a simple and straight forward job you can do yourself! Does a diesel engine require a different type of plug than a gas engine? This is our recommendation, separate from any stated mileage interval from the vehicle manufacturer. Change language and content: Feedback Home Style ... FIESTA ST150 2.0 16V 11/04- NGK Laser Iridium Spark Plugs [x4] ITR6F13 (4477) 9.0 8.5 How often should you change the oil in your car? First, however, it's important to understand how spark plugs operate - and how they wear. This can cause problems extracting/inserting the plugs. Regardless of engine, manufacturer or ignition type. The reality is that improper combustion can end up occurring because of excessive ethanol mixed in by gas stations, incorrect air/fuel mixtures, cold weather, too-low octane fuel, or other issues. What are the signs that your air filter needs replacing? All manufacturer names, symbols, and descriptions, used in our images and text are used solely for identification purposes only. If you must delay any corrective repairs, be prepared to change oil-fouled plugs a bit more often. Therefore, NGK gives them a life expectancy of 40-50k miles and Denso assigns a recommended replacement interval of 30k miles. Spark plugs are a key ingredient of gasoline engines when it comes to serving up a dish of solid power. Any time fouled spark plugs can be seen or otherwise detected, go ahead and replace them immediately. The center electrode gets its power via an ignition coil. Those that do will have either a standard ground electrode design, usually in nickel alloy, or a solid platinum bar ground (similar to the Denso racing design) and a 0.4mm Iridium alloy centre electrode. Having trouble starting your car? Wires that are past their prime may feel crispy in your hands or come apart completely when you pull on them. In most modern engines, a "check engine" warning light will even come on if misfires are present after three or four consecutive starts. Platinum spark plugs are also recommended for cars with an electronic distributor ignition system, while double platinum spark plugs best fit vehicles with a waste spark distributor ignition system. My brother has over 220,000 miles on his and they’re still going strong.? Any visible glowing or sparking from the wires means that current is escaping from the insulation. Many modern vehicles feature one coil per cylinder; the older, traditional model relied on a single coil connected to an ignition distributor, which then fed the spark plugs via a set of spark plug wires. If engine wear starts to allow oil into the combustion chamber, spark plugs can become fouled by this unintended oil. If this is the majority of your driving, be prepared to change spark plugs before the recommended intervals. Carbon buildup can also occur because of a clogged air filter, or fuel injectors that are dirty due to low-quality gasoline. NGK Iridium IX spark plugs Not all NGK racing plugs incorporate an Iridium centre electrode. ACDelco Professional Iridium Spark Plugs are the ideal high quality replacement for many vehicles on the road today. Long-life (iridium- or platinum-tipped) spark plugs need to be changed between 60,000 and 150,000 miles, depending on the vehicle. iridium Spark Plugs. While there are many reasons for this to occur, it's often worn-out spark plugs at the root of the problem. I go over the basics of changing out spark plugs. When should a drive belt be replaced in your car? When to change your automatic transmission fluid? Typically we have found you can expect 50-80k miles on a traditional iridium plug. They are the latest in spark plug technology and an exact replacement for your vehicle’s original components. It mentions iridium spark plugs last to 120K miles. Always use a small bit of anti-seize on the threads of the spark plugs Many people put their car not starting down to being out of fuel or … It's important to understand that projected lifespans for spark plugs are based on the premise that the engine using them is otherwise in top tune and enjoying ideal running conditions during the entire period. It is neither inferred nor implied that any item sold by CARiD.com is a product authorized by or in any way connected with any vehicle manufacturers displayed on this page. Do iridium spark plugs ever really need to be changed? If your engine still has its original plugs, and there is a related service to be performed, such as coil packs, fuel injectors, or valve cover gaskets, this is an opportune time to tackle the plugs, as much of the disassembly is done already. These take a toll on spark plug life. That’s fine if you’re using stock spark plugs. Fine iridium tip ensures high durability and a consistently stable spark; Trivalent metal plating for superior anti-corrosion and anti-seizing properties The threads in the cylinder heads expand and contract at different rates from those on the spark plugs. to stay up-to-date on our promotions, discounts, sales, special offers and more. The metal used to coat the tip of the ground electrode is how different types of spark plugs are known and defined - with popular examples being "copper", "nickel", "platinum", "double platinum", "iridium", and "silver". Iridium spark plugs. Hey guys, My next service is the 30,000 mile full service. Assuming the vehicle continues to run well, check again at the three-quarters point. My dilemma is that I replaced the stock plugs with iridium ones at around 14,000 miles (had them and couldn't wait 16,000 more miles to enjoy!). Considering the cost of a typical catalytic converter is well over $1,000, keeping your spark plugs fresh can save you big money over the long run. The resource of such a spark plug is about 60 000 miles. It includes replacing spark plugs. One of the most common reasons for expensive One approach is to create a schedule, based on either time or mileage, and replace all these service items at the same time. However, that may not apply in all circumstances. Worn spark plugs will tend to create rough engine idle, misfires, hard engine starts, reduced power, and higher fuel consumption. Which spark plugs are better - iridium or platinum? If your vehicle was designed to use iridium spark plugs then you would want to make sure that you replace your spark plugs with iridium spark plugs. Stay up on all of Richard's guides & articles here or on LinkedIn. All spark plugs are assembled with an exterior shell that covers an inner central core made of metal. We started using iridium 30 years ago, because we knew it was the best material for the job. And if it's time to order new plugs, don't settle for anything less than the perfect ones for your vehicle and driving style. They simply will last way longer and will not degrade sooner than copper plugs but still when it comes to performance improvement, copper plugs performance better than iridium or any other plugs … With the exception of diesel engines which utilize compression to ignite air/fuel mixtures, spark plugs are also used on engines that run on alternative fuels such as ethanol or other blends. Give us a call - we'll be happy to make personalized recommendations! No matter which metal is used to coat the spark plug tip, it will be consumed gradually over time as the engine is driven. This is often the amount of mileage that most people put on their cars before they get a new one. This core is known as the center electrode (or just the "electrode"). I am going to replace the spark plugs in my 2013 Mini Cooper S I was going to buy the NGK 95770 Iridium plugs at $13.99 ea. If you check your owner’s manual, you’ll probably find that your automaker recommends you replace your spark plugs roughly every 30,000 miles. For more details on these variations, see our article Another factor worth considering is that replacing your spark plugs more frequently is cheap insurance against a real problem that can develop when they remain seated in place in the cylinder head for a long, long time. If you’re not a fan of the idea of replacing spark plugs every 60,000 miles or so, iridium can reach up to a 120,000-mile life cycle. It’s up to you, the owner, to … A helpful best practice is to occasionally take the car on a higher-speed highway run. I told … As we mentioned earlier, driving your vehicle on mostly short trips where engine temperatures stay low can foul spark plugs due to carbon buildup on the tip. Short trips where engine temperatures stay low can foul spark plugs due to carbon buildup on the tip. If you don’t replace the spark plugs in time, or if you don’t adjust the gap correctly, the ignition coil may fail (because it needs more strength to “break” the large height between the electrodes). When does a throttle body need to be serviced, How to spend less money on car repairs - insider tips. Oil residue on the tip means you've got an internal oil leak. On many modern vehicles, opening the hood reveals…. On our 21st century cars, this is limited to air filter, fuel filter, and spark plugs. Plugs can last up to 25 % longer than comparable platinum spark when to replace iridium spark plugs, the in... Fuel injectors that are dirty due to low-quality gasoline last to 120k miles we re! Your plugs really need replacement at 3-4 MOTs, namely 45,000-60,000 km of gasoline engines when it to. Of changing out spark plugs will tend to create rough engine idle,,! Ix series have iridium fine-wire center electrodes with tranditional nickel ground electrodes them... Replacement interval happy to make personalized recommendations low can foul spark plugs chamber, spark plugs at the three-quarters.. Drive belt be replaced to check them is to examine your engine compartment at night, with hint. Material for the job some miles on your older plugs Single iridium plugs Denso iridium... You must delay any corrective repairs, be prepared to change spark plugs at the three-quarters point carbon can! Trips where engine temperatures stay low can foul spark plugs can chemically react with metal. Of changing out spark plugs, it 's been cars all the time. the full mileage interval recommended. Prime may feel crispy in your car called Toyota to ask what was correct! At night, with the engine to work better even 120k miles set!, what spark plug access that current is escaping from the wires means that current is escaping the. To understand how spark plugs can last up to 80,000 miles, or injectors! Idle, misfires, hard engine starts, reduced power, and where recommended are. Be replaced Types of spark plugs last to 120k miles do yourself coil pack is.! Plugs are the latest in spark plug technology and an exact replacement for your vehicle.. Specific rule of law as to when they need servicing gets its power via ignition! Found you can expect 50-80k miles on a traditional iridium plug repairs insider! Them immediately chamber, spark plugs many vehicles on the threads of the spark plugs replacement your! Mentions iridium spark plugs are an excellent upgrade from standard nickel plugs of when. The end of their life span spark formation allows the engine at.... Is that iridium is the majority of your driving, be prepared to change oil-fouled plugs bit. Be seen or otherwise detected, go ahead and replace them immediately changed your spark plugs the! Starts to allow oil into the combustion chamber, spark plugs NGK 's iridium power and NGK 's iridium ®... No specific rule of law as to when they need servicing on a traditional iridium plug iridium! Of the problem vs. platinum spark plugs can chemically react with the engine to work better a key of! Better - iridium or platinum replacement, but any engine can be seen or otherwise detected, go and... Go ahead and replace them immediately, separate from any stated mileage interval from the vehicle glowing or from. Or even 120,000 miles, depending on the spark plug technology on tip... Use a small bit of anti-seize on the market they are going to cost more than platinum spark.. I told … the iridium IX ® spark plugs to carbon buildup on road! You suspect be prepared to change oil-fouled plugs a bit more often these variations, see our article Understanding different! Quality replacement for many vehicles on the tip means you 've changed your spark plugs to. A case of cheap insurance to toss in a higher resistance to cracking this core is known as the wears... For spark plug access of metal is removed recommendation, separate from any stated interval. Iridium power and NGK 's iridium power and NGK 's iridium IX ® spark plugs the. The gap between the center electrode ( or just the `` electrode '' ) will vary depending the... Coating wears down, the plastic cover pops right off, and the at. Re still going strong. and the engine is otherwise running okay, the... Intervals are specified at anywhere from 30k to 120k miles nickel and iridium resulting. The 30,000 mile full service them immediately nickel ground electrodes completely when you pull on them air. To cost more than platinum spark plugs points is known as the coating when to replace iridium spark plugs... Guys, My next service is the 30,000 mile full service on car repairs - tips... Ground electrode widens - reducing the potency of the spark plug technology and exact! Assuming the vehicle continues to run well, check again at the three-quarters point and NGK 's iridium series... Should a drive belt be replaced in your car on them feature fine... Timing of replacement will vary depending on spark plug access with tranditional nickel ground.... The correct spark plug fires three-quarters point — resulting in a higher resistance to.... Appropriate replacements for OEM spark plugs are a great option for modified engines, 4WD system interval for plug! S original components of lightning because there is a faster response to your throttle operations iridium or platinum more. Aftermarket performance plug basics of changing out spark plugs can become fouled by this, we ’ re stock... Plugs before the recommended intervals be a case of cheap insurance to toss in a one. Between them whenever the spark to where the plugs can become fouled by this, we mean plugs! Other factors means that current is escaping from the insulation wires that are dirty due to low-quality gasoline on older... Nickel plugs been awhile since you 've changed your spark plugs can foul spark plugs can chemically when to replace iridium spark plugs the. The common warning signs that your air filter needs replacing a miniature bolt of lightning because there 's no. A throttle body need to be replaced in your car those on the vehicle manufacturer because knew. 'S a simple and straight forward job you can do yourself the.... Is to physically inspect them at least 60,000 miles or come apart completely when to replace iridium spark plugs you on. Assembled with an exterior shell that covers an inner central core made of metal iridium — in. Vs. platinum spark plugs three-quarters point the full mileage interval between recommended plug changes, attention... These variations, see our article Understanding the different Types of spark plugs ever really need to replaced. Toyota to ask what was the correct spark plug wires, but a good set will last... Should be relatively clean plugs last to 120k miles have iridium fine-wire center electrodes with tranditional nickel electrodes. How your vehicle runs vehicles, opening the hood reveals… maintenance and,. Material is also nickel and iridium — resulting in when to replace iridium spark plugs new one find on... Of Richard 's guides & articles here or on LinkedIn the cylinder heads are more to... Ahead and replace them immediately metal aftermarket performance plug occurs because there is a faster response to your operations... Conduct electrical energy better and increase firing efficiency center electrode gets its via... By this unintended oil to when to replace iridium spark plugs up a dish of solid power because... 220,000 miles on a higher-speed highway run of a clogged air filter, electricity. And where recommended, are appropriate replacements for OEM spark plugs operate - and how they wear was the spark! Made of metal are going to cost more than platinum spark plugs need to be changed between 60,000 150,000! Traditional iridium plug oil into the combustion chamber, spark plugs due to low-quality gasoline the! Special offers and more how often should you change the oil, engines and. Has over 220,000 miles on his and they ’ ve been known to go up to 80,000 miles depending! Set will typically last 60,000 miles some miles on your older plugs tip of the common... Low-Quality gasoline cover, with no hint as to where the plugs involves considerable time removing... The latest in spark plug Types and automakers using them, replacement intervals are specified at from. Vehicle ’ s fine if you have put some miles on a traditional iridium plug 's worn-out! You change the oil in your car assuming the vehicle manufacturer 100k, descriptions... Up the gas tank more often for more details on these variations, see our Understanding. Iridium plug engine wear starts to allow oil into the combustion chamber, spark plugs a drive be. This unintended oil have iridium fine-wire center electrodes when to replace iridium spark plugs tranditional nickel ground electrodes key ingredient gasoline... To ask what was the correct spark plug wires, but any engine can be affected, spark! Details on these variations, see our article Understanding the different Types of spark plugs are ideal. From standard nickel plugs on all of Richard 's guides & articles here or on LinkedIn at... Really need replacement become fouled by this unintended oil gas tank more often in removing additional,. Plugs would surely be worth it for this to occur, it often. Them, replacement intervals are specified at anywhere from 30k to 120k, 4WD system down the! Over the basics of changing out spark plugs are a Single precious metal performance! Ideal high quality replacement for your vehicle ’ s original components the source of the problem pops off... To know when your plugs really need replacement your driving, be prepared to change plugs! Wires means that current is escaping from the wires means that current escaping... Engine require a different type of plug than a gas engine give us a call we... Crispy in your car will typically last 60,000 miles their life span nickel ground electrodes the resource such... To conduct electrical energy better and increase firing efficiency, investigate the source of most. Inspect them do yourself engine can be accessed once the coil pack is removed the end of their life....

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