If you suspect or know that you’ve likely waited too long to replace your spark plugs, or you just don’t know the last time they were changed, there are some warning signs that may alert you that you have a bad spark plug and an immediate change is needed. This can cause the engine to hesitate, which will make it run at a rough idle. Replace spark plugs (120,000 miles or 144 months) Inspect ignition wires; Reset maintenance reminder light; Perform multi-point inspection with print-out; Road test vehicle It is also important that you don’t ignore when this happens. Let's look through the work that is required, and you can make the decision yourself whether to do it yourself. These explosions cause massive amounts of heat and pressure repeatedly within the combustion chamber. However, the actual timing of replacement will vary depending on other factors. Get a free detailed estimate for a repair in your area. Despite this, they are often not considered to be that important in preventative car maintenance, which is a huge mistake – to say the least. Due to this added wear, they need to be examined more often for premature wear, and the spark plugs possibly should be changed more frequently. Many mechanics and manufacturers are beginning to set 80,000 miles as the new standard for the industry, but most mechanics still suggest changing them sooner. (Facts VS Myths). Genuine Toyota Part - 9091901194 (9008091116, 90919-01194, 9091901195) This is especially common when there is oil leaking onto the tip of the plugs. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. Copper, iridium, and platinum are common metals used in manufacturing them, and all have different lifespans. reasons you should change your spark plugs, the electrodes wear and the spark becomes less efficient, produce a thick carbon buildup on the tip of the spark plug, ridium and platinum are more durable materials. Also, keep in mind that you know your vehicle better than anybody else. Service. As this occurs over thousands of times per minute over the life of the electrode, the electrodes wear and the spark becomes less efficient. O-ring seal replacements will usually fix this issue, but not always. ©2020 - VehicleScene.com. Iridium and platinum are more durable materials, but the electrical current doesn’t flow as freely through either metal. Toyota recommends the replacement of spark plugs, typically when your vehicle reaches 120,000 miles. As oil leaks onto the spark plugs, they will corrode faster, and there will be a greater change that carbon buildup will result from unburned fuel. I have a 2002 Sienna which is similar to all models 2003 and prior. • The front 3 plugs are easy. (Remember that a flashing check engine light could signal serious trouble). If you know that you run your vehicle hard or that your vehicle isn’t performing as well as it usually does, change the spark plugs! A Guide to Intervals. When your check engine light comes on, it could mean a number of different issues, one of which could be a fault tripped by a spark plug issue. It mentions iridium spark plugs last to 120K miles. Steps to remove 2008 Sienna V6 plugs. Most manufacturers advise that you can travel at least 80,000 miles before a change is required for the newest vehicles. Any component inside the engine is subjected to large amounts of frictional heat from moving parts, pressurized fuel within the fuel system, and pressure from the explosions which occur inside the combustion chamber. Not all BMWs have the same spark plug change interval. Toyota says to change at 30,000 mile intervals in order to maintain Emissions warranty. When spark plugs become fouled or there is oil leaking onto the tips of the plugs, the spark is prohibited from firing correctly or at all. Just like every other engine component, they wear out with use and time, and heavy usage makes them wear out more quickly. Seals and gaskets are often one of the first things to wear out in a vehicle, as they are often made of rubber, plastic, or silicone. The “tune-up” probably includes spark plugs, air filter, coolant change, and probably transmission fluid change. This mileage interval can vary greatly from vehicle to vehicle and depends upon the type of spark plug preferred by the manufacturer. You can have the engine fault code read by an OBD II reader if your vehicle is a post-1996 model. Your IP: 85.187.128.8 Cloudflare Ray ID: 609eb96f0ebd1a56 There is no scheduled interval at which to replace the Automatic Transmission Fluid. A Toyota Sienna Spark Plug Replacement costs between $396 and $518 on average. How Often Should You Change Spark Plugs? This can vary for different vehicles (Certain NISMO models like the 370Z, for instance, require a lower interval of 60,000 miles), so be sure to check your owner’s manual for specifics. How to Dispose of Antifreeze: Stay Safe & Protect the Environment! 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. BMW's change spark plug change interval varies between 35,000 and 100,000 miles. I have a 03 Sienna and just did the spark plugs without removing the intake manifold It is a tight fit but can be done. Thankfully, replacing spark plugs (just like changing your vehicle’s oil), is not that complicated of a process. So, you will always be the first to notice if your vehicle isn’t running correctly, and whenever something unusual is going on. Ever since I turned old enough to drive, I have driven as many vehicles as possible, while teaching myself how to perform maintenance and upgrade work on every vehicle I've owned. Always follow the spark plug service intervals shown in your owner’s manual to figure out when to replace spark plugs. The Toyota Sienna maintenance schedule includes 40 different types of services over the course of 150,000 miles. This routine maintenance can be very costly. In addition to writing for Vehicle Scene, I currently write for Autolist, and also own and operate my own vehicle blog website, The Unlimited Driver. Platinum-tipped plugs are designed to last up to 60,000 miles before replacement Toyota adds nickel and iridium to the platinum; this alloy helps make the spark plug strong and durable, while helping to prevent cracking Genuine Toyota iridium spark plugs: The long-life, high-performance spark plugs As fuel combusts within the combustion chamber, the remnants of these explosions can produce a thick carbon buildup on the tip of the spark plug if more fuel than oxygen enters the engine. It is best to cross-check any new spark plug installation with the guide provided in your owner’s manual. Best Fuel Injector Cleaners In 2020 – Ensuring Optimal Performance! Service Interval. Being informed and knowing when to change your spark plugs will be one of the best and easiest things you can do to keep your vehicle running like it should. Nissan-certified service technicians will recommend going no more than 100,000 miles in between spark plug replacements. n All platinum-tipped plugsare designed to last up to 60,000 miles before replacement. 2 people found this helpful. As an Amazon Associate I earn from qualifying purchases. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. A Guide to Intervals. You may need to download version 2.0 now from the Chrome Web Store. Servicing a Toyota Sienna involves a lot of labor. We also offer coupons on most auto services. Factors to Consider. The spark ignites the air-fuel mixture entering the engine through the air intake and fuel injectors, pushing the engine’s pistons down and creating the engine’s power. Spark Plug Replacement Estimate for Toyota Sienna Toyota Sienna Spark Plug Replacement costs $452 on average. This becomes a more likely issue the older your vehicle becomes. Frequent highway commuting and infrequent driving don’t cause as much wear on engine components in general. I told the person about the conflicting information. I've had a passion for cars since 8 years old, and been a subscriber to Auto Week magazine since my 10th birthday. Although service intervals are pretty long, spark plugs shall be changed once in a while, because they are susceptible to normal wear and action of various unfavorable conditions. That’s fine if you’re using stock spark plugs. A misfire is one of the most serious issues your engine could encounter, and it could be caused by the lack of spark being produced by a spark plug. The ground electrode will wear out first. Spark Plug replacement on 3.5l engine of 2007 Sienna CE Reply to Thread I found the pics and directions to be very thorough and easy to follow. If your spark plugs are performing poorly, chances are that your gas mileage is also suffering. Long-life (iridium- or platinum-tipped) spark plugs need to be changed between 60,000 and 150,000 miles, depending on the vehicle. 80,000 to 100,000 miles is slowly becoming the new standard … There are many factors that affect whether you should change your spark plugs sooner than recommended, or whether you will be safe to wait some extra time. The change intervals can vary greatly depending on the types of spark plugs being used, type of vehicle, and a host of other factors as well. If you notice that you are filling up more than normal, then it might very well be time for them to be changed. I called Toyota to ask what was the correct spark plug change interval. How Long Does It Take to Replace a Windshield? Done at 100K miles. Despite this, they are often overlooked in a routine car maintenance schedule. Let’s take a look at how long you can (and should) drive your vehicle before it’s time to change your spark plugs. However, that doesn’t mean that you won’t ever need to change them sooner to maintain the health of your engine. Contact | Privacy Policy | Cookie Policy | Terms of Service | Disclosure. 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. Yes, changing out the spark plugs on Toyota's tranverse mount V6 engines is tough. Toyota Sienna. How Long Will My Iridium Spark Plugs Last? 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. This problem could be caused by more than just worn out spark plugs, but examining them to see if they need to be changed is always a good place to start. If the code signifies a spark plug-related issue, you can then be sure that it’s time to change them. You know your vehicle, and you will know if/when it starts to run incorrectly! 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