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View Full Version : plug checkin



400exrules
02-23-2006, 01:43 PM
whats the proper way to do a plug check so you can get a very accurate reading of how your jetting is? what do you guys do?

sixer3
02-23-2006, 02:16 PM
main jet pin it for about 10 seconds going through the gears normally, pull the clutch and hit the kill switch, the let it roll to a stop and immediately check the plug....

for the needle jet hold the throttle half way the same amount of time with a different plug(preferably)

fort eh pilot very little throttle about 1/8 and repeat again preferably with a another new plug