Spark Plugs - Kawasaki Forum :: KawasakiWorld.com
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post #1 of 18 Old 04-22-2019, 12:03 AM Thread Starter
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Spark Plugs

Hi guys, just simple question my bikes still having the miss-fire problem and I need to sort her out.
I know the stock plugs are CR9EKPA but I'm not paying 14 each for them that's crazy
Now some mention using the Iridium version CR9EIX but again they are expensive....
Is there a bog standard plug which will work ?, the bikes not been used for a few years now but still want to start her and warm her up every now and again.
I also get confused by the short form part number such as 3521 for the iridiums as some sites seems to list the plugs but with a different code number ?.
Thanks in advance.

*** ZX12-R ~ RT2 360 ~ XR650R ~ DT175MX ***
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post #2 of 18 Old 04-22-2019, 12:15 AM
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NGK IRIDIUM CR9EIX 3521 are the ones I use on my zx-12r B4, and on my zx-9r's.
The gap on these with that number 3521 should have the gap preset to 0.7, so no adjustment needed.

These days there as cheap as OE ones, and in my opinion work better and last longer.
Just don't drop them as you can crack the inner core and they won't work so good.

For Tech Questions Bike Model letters and Country are more useful than saying the year, for UK owners anyway, as registration year is not always the year of manufacturer model.
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post #3 of 18 Old 04-22-2019, 01:38 AM Thread Starter
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Cheers Yorkie, I take it the F1 light won't throw a fault code for a dodgy stick coil ?, nothing worse than spending money on 1 thing only to find it's another.....lol.... :)

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post #4 of 18 Old 04-22-2019, 04:08 AM
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CR9EIA is another option, which is the stock plug for ZX14's
Cheap cheap option is CR9E

2006 ZX-12R B6F
Ohlins / TRAXXION Dynamics / NISSIN / HEL / Power Commander / Bear Racing / Akrapovic / BMC / Muzzy / Healtech / ERMAX / Helibars / GSG / R&G / NUI Racing

Last edited by SteveW; 04-22-2019 at 04:11 AM.
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post #5 of 18 Old 04-22-2019, 10:01 AM Thread Starter
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Hi Steve, which CR9E can you confirm fit ?, as mentioned I only need these to eliminate the poor running problem ?.
https://www.ebay.co.uk/itm/4x-NGK-CR...IAAOSw1CBbsyfF

Would they do the trick ?

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post #6 of 18 Old 04-22-2019, 10:42 AM
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A faulty stick coil should throw an FI indication, but not always.

The ECU Stores faults so if your not sure its shown one, check it.

For Tech Questions Bike Model letters and Country are more useful than saying the year, for UK owners anyway, as registration year is not always the year of manufacturer model.
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post #7 of 18 Old 04-22-2019, 01:55 PM
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Quote:
Originally Posted by Mauser View Post
Hi Steve, which CR9E can you confirm fit ?, as mentioned I only need these to eliminate the poor running problem ?.

https://www.ebay.co.uk/itm/4x-NGK-CR...IAAOSw1CBbsyfF



Would they do the trick ?
Well, I personally have only ever used the Laser Iridium or Laser Platinum.
Many others have mentioned the CR9E which is the standard version plug - I'd say your ebay link is what you're after

2006 ZX-12R B6F
Ohlins / TRAXXION Dynamics / NISSIN / HEL / Power Commander / Bear Racing / Akrapovic / BMC / Muzzy / Healtech / ERMAX / Helibars / GSG / R&G / NUI Racing
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post #8 of 18 Old 04-22-2019, 02:02 PM
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Cr9e in all the turbo stuff I do
They work better under high load. Just change them more often

01 ZX-12R 8.84 @ 156.3 on dot tires, NA.... turbo 8.47 @ 164
00 ZX-12R 8.62 @ 165.2 no bars, slicks, 55 shot... turbo 8.32 @ 173
00 ZX-12R 1: 222.046 1.5: 226.390 Worlds Fastest NA Kawasaki
00 ZX-12R street turbo 1: 227.9 1.5: 234.1
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Worlds fastest ZX-12R CMG Racing RCC Turbos
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post #9 of 18 Old 04-23-2019, 06:34 AM Thread Starter
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Quote:
Originally Posted by ninjayorkie View Post
A faulty stick coil should throw an FI indication, but not always.

The ECU Stores faults so if your not sure its shown one, check it.
I connected the "orange" wire up to the rear subframe seat bolts as a ground but the F1 light didn't throw up any faults ?, I have already checked the stick coils last year and they were all within spec....I guess it's new plugs next, I can do the 3 fairly easily from the left side but don't think the throttle side is reachable from the left....:)

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post #10 of 18 Old 04-23-2019, 08:22 AM
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I usually do them all from 1 side. Sometimes you can use some wobble extensions to get #4 without pulling the throttle cables

01 ZX-12R 8.84 @ 156.3 on dot tires, NA.... turbo 8.47 @ 164
00 ZX-12R 8.62 @ 165.2 no bars, slicks, 55 shot... turbo 8.32 @ 173
00 ZX-12R 1: 222.046 1.5: 226.390 Worlds Fastest NA Kawasaki
00 ZX-12R street turbo 1: 227.9 1.5: 234.1
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Worlds fastest ZX-12R CMG Racing RCC Turbos
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post #11 of 18 Old 04-23-2019, 09:15 AM Thread Starter
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I usually do them all from 1 side. Sometimes you can use some wobble extensions to get #4 without pulling the throttle cables
I will endeavour to do it from 1 side lol, saves turning the bike around as well....I have long arms and no kleen air crap in the way....

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post #12 of 18 Old 04-23-2019, 05:33 PM
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My 14 was a sputtering and missing something terrible. New plugs.
Fixed. These bikes love a fresh set of plugs. Don’t forget a dab of dielectric grease.

cmg
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post #13 of 18 Old 04-26-2019, 09:54 AM Thread Starter
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New plugs arrived today, all went OK but sadly even though I could reach number 4 plug from the left side I simply couldn't pull the stick coil out...if you have done this you will know the coils are a snug fit lol.....anyway she all fired up perfect and hopefully she wil remain like that.
I need to pack up work and become a vet ?.....I'm sure I've see some guy on TV with his arm this far up a cows ass
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post #14 of 18 Old 04-26-2019, 01:10 PM
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Congrats on the plug change. It ain't easy the first go at it. I used needle hose pliers to work out my COP boots (haven't been off the plugs since year 2000). Put a slight bit of electric grease on the inside of the boots to allow them to not seize up for the next time.

Be careful where you buy plugs. I'm reading there are lot of counterfeit/junk NGKs in the marketplace that can break off in the cylinders and cause a world of hurt. I ordered mine directly from NGK for piece of mind. I did mine without removing the throttle cable (RH side of bike) but eventually had to remove the cables to get the leaky throttle body out. So I'd recommend doing it for the plugs. Not too bad.. just take a few pix of the handlebar orientation to ease re-assembly.

2000 ZX12R (A1) with 14k (Candy Persimmon Red)
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post #15 of 18 Old 04-26-2019, 02:30 PM Thread Starter
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Originally Posted by 71Rcode View Post
Congrats on the plug change. It ain't easy the first go at it. I used needle hose pliers to work out my COP boots (haven't been off the plugs since year 2000). Put a slight bit of electric grease on the inside of the boots to allow them to not seize up for the next time.

Be careful where you buy plugs. I'm reading there are lot of counterfeit/junk NGKs in the marketplace that can break off in the cylinders and cause a world of hurt. I ordered mine directly from NGK for piece of mind. I did mine without removing the throttle cable (RH side of bike) but eventually had to remove the cables to get the leaky throttle body out. So I'd recommend doing it for the plugs. Not too bad.. just take a few pix of the handlebar orientation to ease re-assembly.
I've done the plugs 4 or 5 times before over the last 11 years so it wasn't a problem, I just couldn't get number 4 stick coil out without removing the right upper grey cowl.... Took about 40 mins in total most of the time was removing tank cover and other plastic parts, the actual plug part took about 10 mins including getting the rubber mat located onto all the little hooks

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