i have a 01 400ex and the spark in the spark plug isnt jumping the gap it jumps to the side of the plug...i have bought 2 new plugs n after about a week they stop working and jump to the side anybody have an idea on why it is doing this??

 

what does the plug look like, any wear, discoloration things like that?

have u changed anything that would affect the engine[jetting, altitude,exhuast or intake mods]

Are you gapping your plugs correctly, get a gaping tool and see if your gap is set to the rite size?

are you sure that you are getting the rite plug. the only plugs i keep in my 400 are NGK plugs im not sure of the code on it tho

hope this helps, if you ave any other questions you can PM me, i have a real softspot for broken ex's.

 

well i had the baffel cut out and ran it without the airbox lid for awhile then i relized it probably wasent to good for the motor so i have the baffel exaust tip on and airbox lid back on so that cant be the problam and other then that i dunt have anything done to it...it was wet when i took it out probably because i was trying to start it for awhile before i checked the plug and found out it wasent sparking right...and i am running the normal ngk plug that is told in the manual and do you have to check the gap or is it gapped correctly when u buy it...?

 

The gap, you must check.