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Thread: Plug Colour/Color
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02-09-2006, 04:21 PM #1
Plug Colour/Color
I just switched my plugs over to Denso Iridium IXU27.
Noticed that my number one plug is very white almost furry and dry looking. Is this normal or doo I worry?
These plugs have done about 50 hours
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02-09-2006, 04:29 PM #2
- Join Date
- Nov 2005
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You are running lean. What mods do you have?
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02-09-2006, 04:33 PM #3
That's not lean, that's SUPER LEAN, richen or you will enrich your dealer...
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02-09-2006, 04:34 PM #4
Ok, What do I do to stop this? I have no engine mods except the Riva intake!
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02-09-2006, 04:36 PM #5
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- Nov 2005
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You just have a power filter? What kind of gas are you using?
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02-09-2006, 04:39 PM #6
Normally Super unleaded, or optimax. The best possible fuel, think its about 97octaine. But I think UK octaine rating could be different to US rateing.
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02-09-2006, 04:42 PM #7
The plugs look good to me
Maybe instead of going back with stockers go with some Denso iridium IXU27's
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02-09-2006, 04:43 PM #8
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- Nov 2005
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Check and see if your flame arrestor hasn't worked loose or has a gap seeping in more air. What is your medium grade rating?
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02-09-2006, 04:45 PM #9
Phew!!! Thanks Jerry. I have just put Denso iridiums in so will check them again after my next ride.
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02-09-2006, 04:46 PM #10
Originally Posted by jasj
HEre in USA we call "92" a gas that is 97 RON and 87 MON, using the R+M/2 method that gives you 97+87/2=92.
Your 97 Euro gas is 97 RON, so roughly equivalent to US 92, do not use any less than that.
Don't you brits have 98 RON gas?
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