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Old 06-18-2013, 12:41 AM   #17409
Tigers R great.
blacktiger's Avatar
Joined: Nov 2005
Location: St.Leonards on Sea, England.
Oddometer: 3,895
Originally Posted by dwoodward View Post

OEM-quality spark plugs are cheap, and you may not be able to visibly detect functional issues. I once found one that would spark fine in open air, but not under compression at TDC.

Sort of like doing a timing belt on a car- most likely you have to muck with the water pump anyway, might as well replace it while you're there, and hey, crank main seals are cheap and you're right there- why would you not replace it?
I completely agree with this. I bought some Irridium plugs for my 955 but after 12K I hadn't noticed any difference in how the bike ran and I wasn't that confident about them going another 12K so I replaced them with new standard NGKs. For the sake of a £Tenner£ it just gives peace of mind.
3 - 1 black Tigers. 955i+800XC (sold)+800XC=113000 miles of fun.
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