EX Sedan automatic 580K - â¦ A review of the iridium spark plug advantages and disadvantages can help you to find out! But in my case it seems that the back 4 denso's are since production, and the front 4 NGKs are put it at last years service. be of assistance to some other members who want to have a crack at some basic DIY maintenance. The dealer says it needs to be done at 45,000 miles and takes 8 plugs costing £225/$350. Get a free detailed estimate for a repair in your area. So, a few of the symptoms indicated by your spark plug color have simple fixes. My indy Honda mechanic recommends changing the tensioner every 100K. Oxidation serves to increase resistance, making the plug less effective. The plug plays no part in generating the energy needed to create this arc; it simply provides the air gap and the electrodes. Some engines require that the intake manifold be removed while replacing spark plugs. ops! So why are spark plugs in the mix? Will it give any extra power? The second gen â¦ It seems to be a crime to charge up to $300 for spark plug wires 11-06-2009, 04:42 PM It’s always Throwback Thursday somewhere. ... a difficult to replace plug. To answer this, we first need to understand what a spark plug is and how it works. If you want long-lasting plugs that will reduce the work you need to do replacing plugs and don’t mind paying extra for that luxury, yes. Spark plugs can have platinum cores, copper cores, and even be nickel-plated. So the same applies to this plug as the NGK iridium only its more enhanced.--OVERVIEW: Spark plugs with fine wire center electrodes operate better for two reasons, first, a smaller center electrode requires less voltage to jump the gap. The Honda Ruckus is an interesting scooter that provokes a lot of questions from people who do not ride. Should I put a 10 amp fuse in place of 7.5 fuse? Noble metal plugs can perform consistently and well, which helps to maintain the engineered performance of the engine. Spark plugs in modern Jetskis are small, so small in fact that it's easy to break a plug off if you are heavy handed. they looked up the IMR-9d9h and found an autolite cross reference at 2.09 a piece and a NGK cross reference at 14.99. It really applies to any modern vehicle, but in my case an Alfa 147 1.6 TS has 8 plugs costing about £60 in total. All internal combustion engines have a spark plug, or in the case of diesel engines, a glow plug, to initiate combustion in the engine. Do any of these hold water? 2. A Honda Pilot Spark Plug Replacement costs between $165 and $335 on average. So you can save money. Number of Honda Pilot Spark Plugs Replacement services completed. So why are spark plugs in the mix? Spark plugs may be small and fairly inexpensive parts, but they play an integral role in how your engine and your entire car functions. As mentioned in our previous article on horsepower, air tends to be the limiting factor for engines. ... Whilst iridium is overall the best material to look for in a spark plug, itâs also pretty expensive. Nickel-chromium alloys have a melting point of 2,618 degrees Fahrenheit compared to 3,220 for platinum and 4,440 for iridium, so it is likely that the durability of noble metal plugs would be higher. While the plugs' build quality didn't impress us much, they actually made some power on the dyno-2.9 whp and 1.1 lb-ft of torque over the coppers! Conclusion: Swapping spark plugs can increase power output if the OE-recommended plugs can't ignite air and fuel at maximum efficiency. Get a free detailed estimate for a repair in your area. Is this right? acdelco vs NGK vs Denso. The plugs should only cost around $25, and it is simple to do yourself, if you are so inclined. However, they’re not as durable as iridium spark plugs so having to change your spark plugs may be needed sooner. ... 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