Since platinum is harder, it holds its sharp edge much longer than a conventional spark plug, up to 100,000 miles. Below are the top 3 benefits of iridium spark plugs. If you want to use spark plugs in your vehicle which will last for the longest time, then you’ll want to use iridium spark plugs. The spark plug provides an ignition source for a small engine, such as the kind that powers a lawnmower. Due to this short lifespan, most copper spark plugs need to be changed every 20,000 miles. Can't be farked digging out the owners manual and I don't always agree with what Ford say is best practice anyways. It has the original iridium spark plugs and I'm wondering at what point shd I replace them? Aftermarket Long Life Iridium Plugs Autolite Iridium XP, Champion Iridium, Bosch Iridium and Denso Iridium TT bring the features of OEM iridium long life plugs to the market, with an iridium or iridium enhanced fine wire center electrode and platinum or iridium/platinum tipped ground electrode. 1) Long Lifespan. Most spark plugs have a factory service interval of 100,000 miles; though some may be as much as 120,000 miles. Long-life platinum and iridium spark plugs will typically last up to 100,000 miles or longer; provided the engine isn’t using oil or doesn’t spend a lot of time idling. This causes a spark in the spark plug, which ignites the mixture of fuel and air in the engine. 24-06-14, 12:41 PM. But now, in the 21st century, ignition systems use iridium-tipped spark plugs that regularly last as long as 100,000 miles (160,934 kilometers). The platinum-tipped spark plugs often used in these systems have a 60,000-mile (96,561-kilometer) lifespan. Ignition wires can last twice as long. What is the scoop on platinum spark plugs? now just a few months later its misfiring again. Our Ford Territory is now 7 years old and approaching 100,000km. It is estimated that iridium spark plugs will last for at least 60,000 miles. Iridium spark plugs - lifespan? a mechanic replaced all eight plugs and a new coil pack for the one that blew. Depending on application, iridium plugs can even approach the lifespan of some platinum ones. Dual-Ground Electrode Toyota Spark Plugs. This u-groove traps the the air/fuel mixture before the spark plug fires, making for a large spark, reducing fouling and making for more efficient combustion. Iridium-tipped spark plugs offer better power, more complete combustion that leads to smooth-running engines, and a longer lifespan than copper/nickel plugs. Like other parts of your car, these numbers vary depending on how you drive and how well the spark plugs and ignition wires are looked after. Spark plugs typically have a life expectancy of about 45,000 kilometres. Platinum is much harder metal than nickel alloy and has a higher melting point. In the 1970s, whether you rode a bike with a four-stroke or two-stroke engine, spark plugs introduced themselves into your riding life much more often than they do … Available for select models, this design has several benefits: Both electrodes have platinum to reduce wear and extend service life. Spark Plug Life Span. A spark plug is a fairly simple device. a month later my truck developed a shudder and when i had my codes ran at Auto Zone they said the code was P0304 (a cylinder 4 misfire) i took the truck to a mechanic and he replaced the spark plug and coil pack. Life Span Federal law in the United States dictates that the ignition coil and ignition module on new vehicles are warranted for at least two years or 24,000 miles, whichever occurs first. Melting point I 'm wondering at what point shd I replace them that blew plugs a... 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