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View Full Version : Look at my spark plug, anyone good at reading it plugs?



Renato250r
04-22-2008, 10:01 PM
I have a 250r and the plug fouled slowly while riding, this is how it looks after I dried it off a little. It was very oily. I am running 32:1 Belray H1R on a new stock rebuild with under 2 hrs on it. How does my plug look? Carb is 38mm A/S 172/50
Thanks
http://imgs.inkfrog.com/pix/ebargaincell/plugnew.jpg

GOTFEAR
04-22-2008, 10:40 PM
whats your plug gap (16-18)

04-22-2008, 10:51 PM
Originally posted by GOTFEAR
whats your plug gap (16-18)


it may just be a bad plug

my88r
04-22-2008, 10:53 PM
could be do to the rebuild. coating the piston with oil and such. all might not of burnt off.:eek:

bluetrx
04-23-2008, 12:01 AM
your plug color looks good, that means the heat range is right. but if thats after you dried it off a bit its way too oily. lots of guys run 40:1 i like 37:1 i think you should try less oil in your mix.

adam833
04-23-2008, 12:18 AM
what plug r u using?

86 Quad R
04-23-2008, 07:30 AM
is that the average riding color or what it looks like after a wot plug chop? a 50 pilot sure is mighty phat imo

badmthrfckr
04-23-2008, 04:40 PM
Dude... if thats after a WOT plug chop, your main jet is to big.... if you were just putting around and you pulled it with that color then either your pilot is to big or you need to go up one notch on your needle.

Hope this helped... Im very good with jetting a carb....