Spark plug difference!

Dave M · Scooby Slapper Joined: 03 May 2013 Karma :

Hi all. Just bought a cheap yamaha cygnus x 125 scooter for my lad. Specs say plug should be a CR7E and there is a CR8E in there. Will this make any difference to performance? Thanks Wink

whitedevil · World Chat Champion Joined: 28 Nov 2010 Karma :

I think the 7's are hotter than the 8's. use whatever the manual says.
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GPZ500 sold ~ CBR600FS-2 sold ~ ZX6R sold ~ Street Triple R

The Artist · Super Spammer Joined: 06 Jan 2008 Karma :

It will not make a noticeable difference.

bladerunner · World Chat Champion Joined: 09 Sep 2006 Karma :

The 8 is a grade colder than the 7 so won't cause any overheating problems. If it fouls the plug then try putting the std 7 grade back in. It won't make any difference performance wise so long as its running ok.
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Current bikes...cbr929, KDX200's, Rd125lc mk2, RGV250's

Dave M · Scooby Slapper Joined: 03 May 2013 Karma :

It's seems to be running fine. Plug is a light tan colour so I believe this is about right. Thanks for feedback.

Dave M · Scooby Slapper Joined: 03 May 2013 Karma :

It's seems to be running fine. Plug is a light tan colour so I believe this is about right. Thanks for feedback.