Spark plugs

Why is it that Audi recommend you replace your spark plugs at 40k and vehicles like Honda / Acura. Recommend them at 100k do they use a cheaper plugs or is it over selling ?
Experienced mechanics share their insights in answering this question :
The vehicle recommended spark plug replacement schedule by the manufacturer is for a reason. The vehicle may carbon or oil foul the plugs before 50 or 60k, and this is the reason the interval is set to 40k. You can try and leave them in longer but they may start misfiring.

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Eventually, at around 30,000 miles to as high as 40,000 miles, conventional spark plugs will wear out, which could cause stalling, starting problems and engine misfires. Higher-cost platinum-tipped spark plugs may not need to be replaced as often.
Replacing the spark plugs on your Audi A4 is recommended routine maintenance. Audi recommends replacing the spark plugs on A4 models every 40,000 miles or five years.
The deposits that build upon the plugs can eventually cause them to misfire. When this happens, the unburned fuel in the cylinders can start to eat away at the cylinder walls. This can cause dangerous pressure levels to build up, and it can even lead to engine failure.
A spark plug usually lasts about 30,000 miles, but cleaning them and maintaining them periodically lets your engine perform better and increases your plugs` lifespan. If you see rust, carbon, gunk, dust, or any type of buildup during the inspection, it may be time to clean them.
Most manufacturers recommend replacing spark plugs every 50,000 kilometres, but spark plug quality varies. Some last around 130,000 kilometres, while cheap plugs made of copper may last approximately 40,000 kilometres. “Extended life” spark plugs made of more resilient metals can last up to 160,000 kilometres.
Generally, it`s recommended that you have all the spark plugs (one for every engine cylinder) replaced at the same time. Otherwise, your vehicle might give you inconsistent performance.
Luckily, spark plugs don`t require replacement very often and can go years and many miles before replacement is needed. Most auto manufacturers suggest having new spark plugs installed about every 100,000 miles; however, spark plug longevity depends on the engine, condition, and spark plug type.
Luckily, spark plugs don`t wear out very quickly. You can typically get 80,000 miles on them before they need replacing.
Even if you`re not having problems you`ll still want to have your spark plugs changed out at every 30,000 mile interval. For most drivers, that will mean that you`re due for spark plug service once every 2-3 years!
FACT #4: YOU SHOULD CHANGE SPARK PLUGS EVERY 100K MILES OR SO. So, if good spark plugs are the key to avoiding these issues, how long do spark plugs last, exactly? The general rule of thumb about how often to change spark plugs is that they should be replaced after about 100,000 miles of driving.
It`s a crucial job that spark plugs have because if they`re worn out they won`t emit a spark and start your engine or can even cause significant damage. It`s not just a bad battery that could be keeping your vehicle from turning over — it could be the spark plugs.
Just as your car`s engine needs clean oil to run smoothly, it also needs clean spark plugs. A dirty spark plug can cause problems for your engine, including decreased performance, increased emissions, and reduced fuel economy. That`s why it`s essential to clean your car`s spark plugs regularly.
Spark plugs are designed for long-term durability, meaning that they only need to be replaced between every 80,000 and 100,000 miles. However, they can become damaged earlier than expected and require replacements to avoid pricey engine repairs.
NGK gives them a life expectancy of 40-50k miles. But they have to temper their projections as driving conditions and motor modifications differ. Typically we have found you can expect 60,000 to 80,000 miles on an unaltered motor. NGK Laser Iridium Spark Plugs have iridium center and a platinum ground electrodes.
Causes of a carbon-fouled spark plug include a dirty air filter, excessive driving at low speeds, too rich of a fuel/air mixture, dirty fuel injectors or idling your vehicle for too long.
OEM VW Plugs Last 100,000 to 150,000 Miles

They`re typically made from a high-purity platinum-iridium alloy for impressive heat tolerance and fouling resistance: the number-one plugs killer. You can expect these kinds of plugs to last a good 100,000 to 150,000 miles of usage.

The most expensive type of spark plug is the iridium type. It is harder and more durable and generally lasts longer than platinum types. They have a smaller center electrode and fine wire centers which can generate current faster. It provides better power and complete combustion that leads to better engine performance.
The average cost for an Audi A4 Spark Plug Replacement is between $137 and $211. Labor costs are estimated between $102 and $128 while parts are priced between $35 and $83.
Even if you`re not having problems you`ll still want to have your spark plugs changed out at every 30,000 mile interval. For most drivers, that will mean that you`re due for spark plug service once every 2-3 years!
The average cost for an Audi A4 Spark Plug Replacement is between $137 and $211. Labor costs are estimated between $102 and $128 while parts are priced between $35 and $83.
OEM VW Plugs Last 100,000 to 150,000 Miles

They`re typically made from a high-purity platinum-iridium alloy for impressive heat tolerance and fouling resistance: the number-one plugs killer. You can expect these kinds of plugs to last a good 100,000 to 150,000 miles of usage.

The average cost for an Audi A4 Spark Plug Replacement is between $137 and $211. Labor costs are estimated between $102 and $128 while parts are priced between $35 and $83.
OEM VW Plugs Last 100,000 to 150,000 Miles

They`re typically made from a high-purity platinum-iridium alloy for impressive heat tolerance and fouling resistance: the number-one plugs killer. You can expect these kinds of plugs to last a good 100,000 to 150,000 miles of usage.

When To Replace Spark Plugs Quick Tips. Your owner`s manual recommends when to replace spark plugs. Some require changing at 18,000 miles, some at 35,000 miles, and others at 100,000 miles. Reduced acceleration, engine misfires, and rough idling are symptoms indicating you might need new spark plugs.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Spark plug chaos. Rubber stoppers are preventing the spark plugs from coming out.
ANSWER : Hi there. Try using a pair of small needle nose pliers to pull off the rubber boots from the spark plugs. As you pull, twist the rubber boots to break them free. If you cannot get the rubber boots off, then try using some mineral oil on the boots to aid them off, then clean off the oil with soap and water with degreaser. If you need further assistance with removing the boots from the spark plugs, then seek out a professional, such as one from Your Mechanic, to help you.

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Engine will not stay started. I have replaced idle control valve map sensor spark plugs spark plug wires no check engine light is
ANSWER : You have a problem with the distributor assembly. I recommend replacing the distributor assembly. This will replace all the possible sensors and coil for the ignition and fix the problem you have.

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After part replacements, spark plugs do not work – 1996 Lexus LX450
ANSWER : If you have a Check Engine Light on, first check for those codes to determine what engine management thinks is going on. If no trouble code, check the ignition fuse behind the driver side kick panel (carpeted panel at foot level on the left – for left-hand drive vehicles). If the engine is spinning quickly, and doesn’t appear to be meeting any resistance (as a motor with good compression would have), you may have a broken timing belt. If so – STOP, call a professional mechanic, like a certified technician from YourMechanic for help.

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I have a dodge ram 1500 4.7- 2013 was changing spark plugs on top side with a 5mm socket socket is stuck help?
ANSWER : Hi there. Although what you are listing above is not necessarily a service we offer, it is possible to have one of our mobile mechanics come to your location to help you with this issue. To start, I would recommend setting up a spark plug removal service, then contacting the customer service sales professional that works with you to explain exactly what you need. When this has happened to me, I bite the bullet and purchase a new spark plug and new spark plug socket, as it’s very difficult to get it unstuck without damaging the socket.

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Do you use iridiums spark plugs on the spark plug replacement
ANSWER : The OEM plug is platinum. If you desire iridium, simply note that in the customer notes or let the mechanic know at time of scheduling. Obviously, without contrary advice, the original, or aftermarket equivalent, of a part is always used but if you desire an alternative part, just so long as it is cataloged and available for your car we are happy to help you with that. If you desire plug replacement, please use YourMechanic’s convenient service page for spark plug replacement. Once on that page, please click on "Get a Quote" and enter your vehicle information (year, make, model). If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

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Hi good day, how many spark plugs and spark plug wires do i need for a 2005 Kia Sorento LX?
ANSWER : Hi there. Since you have the V-6 engine option for your Kia Sorento, the correct amount of spark plug’s needed and spark plug wires is (6) – one per cylinder.

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Just replaced spark plugs and wires and my car is still miss firing and I can’t pin point why and my old spark plug is oil covered
ANSWER : Hello there, many faults will cause your 1988 Ford Contour to have a misfire even after the spark plugs were replaced. When oil is seen on the spark plug this indicates that the valve cover is leaking onto the plugs. When this happens it fouls the plugs and can cause a misfire. Until the oil leak is addressed the spark plugs will continue to become fouled. If the misfire persists there are many potential causes such as the plug wires, fuel pump, vacuum leak, oxygen sensor, MAF sensor, or the cap & rotor. A qualified Technician such as one from YourMechanic will be able to diagnose your misfire fault and make any repairs required to resolve the issue.

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Spark Plugs spark once
ANSWER : Either a failing crankshaft sensor or impulse wheel could be the cause of the fluctuating RPM reading. The crankshaft sensor signal is often used to start both fuel pump operation and start the ignition coils with the camshaft sensor setting the sequential injection and ignition firing order.

You may want to have faults read out of the ECM prior to replacing the crankshaft sensor and look at the crankshaft sensor wheel. If the sensor is mounted on the front of the engine the sensor wheel may be part of the dampener and may have slipped or vibrates. If it is a sensor wheel that is part of the flywheel, a bent tooth may be the cause. To have this resolved, you may want to enlist the help of a mechanic, such as one from YourMechanic, who will have the equipment and expertise to correct this hard starting issue.

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