on my 91 warrior listed below i keep fouling out plugs every once in a while and i dont kno how because its actually running lean a 150 mainjet is what im using now and i was told it needs a bigger one but i dont get how it fouls out plugs alot if its lean ive went thru the carb b4 and the clip on the needle is in the middle and the accelerator pump works and everything and i dont kno why it could be doing this still any hlp wud b appreciated.

 

any1 got any ideas?could the fuel bowl be off on measurement? does it need bigger, smaller jet? maybe dirty idle or pilot jet or sumthin im not sure i was wanting some help b4 i tore into it im tired of goin threw plugs worse then a two stroke lol

 

Does it smoke (burning oil) ????????????

How fresh is the motor?????????

What carb are ya running??????????

How do you know it's running lean??????????

 

it doesnt smoke at all the engine just got bored to 84mm and fitted with a Wiseco high compression piston,Cam and all the other things i have listed like few months ago,seems to run ok but plugs are black after week of riding or so and its just a stock carb with a bigger main jet (150) it used to have a 145 and someone told me i need bigger than 150 but i dont get how if it needs a bigger jet its fouling plugs now also it seems like when its colder it runs better most the time then if its warm,it just seems like it kinda dies out on the power just slightly sometimes when u hit it full throttle and try to fly thru the gears, i would expect more out of a warrior than what it does but everyonce in a while it will go up thru the rpms pretty well and it seems reasonably fast for a warrior but i just dunt know if im running wrong jets or what,the needle jet clip is in the middle,it was lowered then i changed back to middle because it was definitely too rich then it would smoke like first 2 min riding(blue smoke),i dno if valve adjustment being off could do anything or not i havent checked in a while and thats about all i know about it.

 

Try adjusting the tang on the float/needle vavle........If it's set to high MOST of the overflow fuel will flow into the carb/motor causing a RICH condition hence fouling plugs.......

 

yea ok i kno wut ur talkin about thanks, yea ill try adjusting that and see wut that does and do u think a 150 jet wud be too small or is it an ok size to run on an upgraded warrior?

 

Start with getting your plug fouling problem fixed. THEN do a plug chop on a NEW plug and see what U have..........

 

yea ok ill try messing with the carb here in a lil bit thanks for the help

 

do you bend the little piece of metal that hangs of the float? or the little valves wire piece that holds it on that piece of metal on the float? i guess in otherwords im fouling plugs becuz its not shutting the hole where fuel comes in at the right time and it allows overflow to go into carb and foul plugs eventually or u said it could be the piece of rubber on the end isnt sealing anymore?