HOW TO: Check the condition of you sparkplug [Archive]

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Kaleigh

11-03-2006, 08:32 PM

here are some pics I found on sparkplugs.. I hope it is usefull... if it is hard to read. sorry. just ask me and I will let you know what it says.. or if you would like me to send you the pic..

Kaleigh

11-03-2006, 08:33 PM

^_^

prowler029

11-06-2006, 12:18 PM

lick it if it shocks tha hell out of u its good!! lol idk

GPracer2500

11-07-2006, 12:00 PM

Those types of charts are mostly for commercial mechanics who use plugs to figure out why a tractor or something isn't running. They are of little to no use to performance engine enthusiasts who are trying to figure out if they need a 160 or 170 main jet (or whatever).

It's not bad information, it's just not particularly applicable for tuning our ATV engines. See my last post in THIS THREAD (http://www.exriders.com/vbb/showthread.php?s=&threadid=237664&perpage=15&pagenumber=2).

Kaleigh

11-23-2006, 06:15 PM

yea.. but its a good place to start.. i would never just go by the plug alone.. but does help to keep you in the close range of the right jet size..

SamC

12-07-2006, 06:21 PM

i believe thats more for cars because if your plug is light brown that means your running to peak performance on a 2 stroke engine.

honda6490

05-23-2007, 04:50 AM

Originally posted by SamC
i believe thats more for cars because if your plug is light brown that means your running to peak performance on a 2 stroke engine.
Yea most of us run 4 strokers not 2's though.