please can some one help me tune my jets on my 2003 400ex its stock i just put in a a new raider clutch kit and a new pin lifter cuz it was broken. now my 400ex doesnt have the torke it used to when i first got it. it has no torke what so ever it drives like a slow 350 warrior how can i fix this problem i already cleaned my carb. but i remember one daay i opened the air box and it was filled with oil how does that happen? anyways i cleaned that all out and took the whole bike aapart and everyone is saying its my jets if anyy one can please help i wanna RIDEEEEE

 

if you put in a clutch kit that is the main reason why your 400ex is slow. oil in the intake is probly valve seats or gaskets, bad valve seats are cronic on the 400ex's. with a clutch kit youll wana rejet your main, and locate and dial up your pilot jet, but not much. mabe 1/4 to 1/2 turn out on the pilot.

when you put on the clutch kit, you will have to tinker with jets if you want more power.

 

whatr are valve seats my bike runs totally perfecxt it hasnt got oil again after that i think my airbox got filled with oil cuz i over oiled were u put oil but i fixed that ima turn my jet now i hope it works man i reeally apreciate it keep in touch ill let u know if it works im turning the pilot jet now

 

just to let you know, if your starting out slower you probly got a diffirent, higher ratio, clutch kit. so your top speed will be improved. jetting may or may not improve your starting speed, its all in the gearing

 

so ur saying since its a new clutch even if i tune the jets it might not work?

 

is it normal after u take apart a carb if the bike doesnt turn on automaticaalyl????????

 

now my bike wont even turn on the starter almost gave out whats the problem i put everthing back correctly and i lossened the pilot jet 1/2

 

Dude I'm not trying to be a teacher or anything, I want to help you but, I'm having serious problems understanding what your saying. Try to use some punctuation and stop the run-on sentences, others will then help also.

 

Alright i took my carb apart and tuned my pilot jet. i turned it 1/2 loosening it. i put the carb back on the bike, and now it just wont start. is it normal if your bike doesnt start so quick after taking it apart. i put put everything back together how it came and my starter almost gave out from trying so much. WHATS WRONG WITH MY 400 ITS A 2003 AND HAS LOW MILES. IT WAS WORKING FINE UNTIL I INSTALLED THIS HIGH PERFORMNCE CLUTCH! the clutch isnt the problem tho now the bike wont even start. can any one help??

 

It shouldn't take long to start. As long as the fuel is turned on it should fill the carb in a couple cranks of the engine. If it ran before you took the carb apart I would remove it again and double check everything.