Motorcycle spark plugs usually last around 16,000 miles, or at least this is when most manufacturer service schedules recommend you change them. That's typically once every other major service. However if you use Iridium spark plugs they will last a lot longer, usually well over 30,000 miles. The metal in a spark plug has a single purpose: to channel the electrical energy through the spark plug. Iridium is far harder than copper and this allows the spark plug manufacturers to create a plug with a sharper ‘tip’ which better focuses the spark around the centre electrode without compromising its service life. however, if the plug is too hot, the material of the electrode or the ground tab will soften, distort, or even oxidize.

cr9e vs cr9ek vs cr9eix | Suzuki GSX-R Motorcycle Forums cr9e vs cr9ek vs cr9eix | Suzuki GSX-R Motorcycle Forums

You’ll need this to help you find the location of your spark plugs and how to access them. This may sound simple but often the manual offers up some time-saving tips for your particular model. Torque the spark plug up to your manufacturer’s recommended settings. If you don’t have a torque wrench, then get the plug hand tight and then add a ½ turn for a plug with a gasket, and more like a ¼ turn for a tapered spark plug. Over-tightening can snap the spark plug – a nightmare. If you’re going to be doing any sort of work on the bike, treat yourself to a decent set of tools. Most of mine are from the Halfords Advanced range (formerly called Professional). Allows the use of an extremely small diameter electrode (0.6mm) without compromising the spark plugs service life If you need to change your Kawasaki’s spark plugs but you’re not sure of the size or if you want to upgrade your plugs to an iridium version for a longer-lasting plug, this is the guide for you.could not get the D one of the manual. I have them on the bike but could be interesting to see a picture. Still not convinced these are fake plugs? One of the best parts of this whole investigation is that we of course found out the fake plugs don’t feature any IRIDIUM tipped centre electrode at all, it’s all LIES. PLEASE NOTE – This article was written a few years ago so not all information provided may be accurate. For example, on some part numbers, NGK now uses Laser Etching instead of stamping, so the font information may not be accurate. Another Sparking Discovery Maybe it's time for a little spark plug 101 as it was explained to me by a guy who didn't spout any BS. Bill I can get you a set of Denso plugs,but I don't think they are anything special... The thing is the cheapest I can find is 44 € ( 11 € each),which is really a normal price here in Greece,since the CR9EIA retail at 15 € each...

CR9EIX NGK Iridium Spark Plug | FREE UK DELIVERY | Flexible

you will notice in the first picture by -AK- you can see the spark plug throat, that is the electrode and ceramic insulator and then space between the threaded material and the electrode/ceramic insulator. How far up inside the spark plug does that space go? A typical copper spark plug will last around 20,000 miles and most get changed at a major service (usually around 16,000 miles) but an iridium spark plug will be good for around 50,000 miles and you do see people running them to 100,000 miles with no issues. The machined quality of the genuine plug is far superior with a much smoother appearance from base to thread.

NGK Iridium Motorbike Spark Plug CR9EIX9

A spark plug fouls with every single power stroke of the engine, as the fuel burns a deposit of soot forms on the electrode. Form enough deposit, the gap resistance changes and the plug either is resisted out or shorted out, neither of which will fire the cylinder. All three are .4 mm iridium center electrode, 10 mm thread diameter, 19 mm reach, 16 mm hex, .9 mm gap, and 5 kΩ resistor. If you’re servicing your Aprilia, now’s the chance to upgrade your spark plugs to longer-lasting Iridium ones that will save you money in the long run. Anyway, I got them for not a lot more than the standard ones so I am happy enough with them. :cheers Two percent of the people think; three percent of the people think they think; and ninety-five percent of the people would rather die than think."

NGK Iridium Spark Plug - CR9EIX - FREE UK DELIVERY

The fakes terminal caps were finger tight, whereas the genuine caps couldn’t be undone by hand and needed pliers. FYI, bike spec = ZX-10R 2013, K&N air filter, Akrapovic slip-on + link pipe, Power Commander V, dynoed 172hp.

Spark Plug Removal

If the plug is brown or light grey your can assume your engine is in good condition and the spark plug is functioning well. Even when a plug is in good condition small deposits will accumulate. This is normal. Rich