ex_freestyle
02-08-2007, 10:59 PM
o.k. i need some help and advice on the good old 400ex, about a month ago i decided to rejet my quad cause it was sputtering in the top end no big deal right. i went 4th clip from the top and it ran a bit better than it did at first it then it got just a bit colder out and it started to run like smurf once again and then i parked it in my shed for the night and evrey time i want to go for a ride i had to use the trusty jumper cables to start my beast, and i also put it on the charger for the night once and a while. i went from a 165 main all the way up to a 175 and back down again and its sitting at a 165 right now and it sputters in the top end once again. but today me and my buddy went for a ride on the lake and we were sucking doughnuts and all that good stuff i let my quad almost hit the limmiter trying to out roost my buddys z-400 sure enough i did but when i came out of the corner my quad came to a complete bog out and it slid to a stop. i sat trying to fire it up until the battery went dead which took about 5 min. the tank is still half full, my buddy had to tow me home sad to say. once i got home i decided to take apart my quad first checking the wiring all is good, then i took apart my carb and cleaned it out and put the needle back to the 3rd clip from the top and jetted it to a 170, i checked my grounds and they are also good, i get a spark out of it and fresh fuel sitting in the tank and i even dumped my oil just for the sake of it and my spark plug is a nice golden brown also. what have i missed, i have spark fuel and air and still no go and i havent seized it up either it still can turn over just not fire. please help me im getting more fusterated by the min. thanks