Spark Plugs Replacement

[jerek.see]

How long do u replace the spark plugs? I replaced my spark plugs recently and found something odd.

look at the top one. what is the cause any opinion?

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[Mikz86ta]

Just did mine a month ago.
Looked OK. Definitely not like above.
Looks like the seal on the plug coil pack was not all the way down or not sealing otherwise.

 

[dalco450]

Looks like the seal on the plug coil pack was not all the way down or not sealing otherwise.

X2

Did mine last week-end at 27 000km. They were all in good shape, like the bottom one on your picture.

 

[jerek.see]

I am replacing the 2 plug coil pack on chamber 1 and 4. plugs from chamber 2 and 3 all ok. They ain't cheap 1 piece it's about 100+. Mechanic says it's either rainwater or high pressure bike wash.

Any second opinion guys?

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[reALIGNed]

Its normal from time to time to see this, its from condensation, and normally on short rides it doesn't heat up enough to dry it out completely. If you were seeing oil instead, then its time for a new valve cover replacement. No need to worry, its fine.

 

[jerek.see]

Its normal from time to time to see this, its from condensation, and normally on short rides it doesn't heat up enough to dry it out completely. If you were seeing oil instead, then its time for a new valve cover replacement. No need to worry, its fine.

thank you my friend

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[dalco450]

Mine were CR9EIX, did you buy your bike used?

 

[reALIGNed]

OEM calls for a CR9, the number (in your case) 9 denotes the heat range, the higher the number the colder the plug fires. OP is using a plug that runs a little bit hotter than stock.

https://www.google.com/search?q=ngk...hUHNiYKHVc4ARsQ_AUIBigB#imgrc=A27I-CdmRwSq9M:

 

[reALIGNed]

thank you my friend

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your welcome