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jeremyd
03-18-2007, 10:09 AM
when its the least bit cool my 400 will die when it is first started.
even if i leave it at half choke for a little while it will die a couple of times before getting warmed up. once it gets warmed up it runs great. what can i do to take care of this starting problem?
400exridin121
03-18-2007, 10:21 AM
42 pilot jet
jeremyd
03-18-2007, 10:58 AM
how much is a 42 pilot jet
jeremyd
03-18-2007, 11:08 AM
will the 42 pilot jet also make it easier to start in warmer temps, i usually have to choke it even when it is warmer?
hornetgod13
03-18-2007, 11:32 AM
Originally posted by jeremyd
how much is a 42 pilot jet

$6.09 at www.jetsrus.com
hornetgod13
03-18-2007, 11:33 AM
Originally posted by jeremyd
will the 42 pilot jet also make it easier to start in warmer temps, i usually have to choke it even when it is warmer?

Yes.
jeremyd
03-18-2007, 12:31 PM
Thanks guys that info helps out alot. i am going to do this, this week.
JOEX
03-18-2007, 03:14 PM
Try C&D Racing, i'm pretty sure they are less than $6...
almostred434
03-18-2007, 09:47 PM
i recently added a 42 pilot and it seems like it is harder to start and it wont idle until it gets really really warm
when it finally get warm it runs fine but its hard to start and doesnt idle until completely warmed up why is this :(
hornetgod13
03-18-2007, 11:09 PM
Originally posted by almostred434
i recently added a 42 pilot and it seems like it is harder to start and it wont idle until it gets really really warm
when it finally get warm it runs fine but its hard to start and doesnt idle until completely warmed up why is this :(

Did you adjust your fuel screw after installing the 42K pilot jet? If you haven't than that's your problem.
almostred434
03-19-2007, 12:03 AM
hornetgod13
ur awesome
do i have to have that stupid little D shaped tool to do it or what
for an 05 400
hornetgod13
03-19-2007, 12:50 AM
Yes you do. All 2005 and Up 400EX Carbs have the "D" shaped fuel screw. You can call DynoJet directly and order the tool. The part number is DT-008. They are less than $10.00.
If you give me a list of your mods, altitude, and riding temperature, I should be able to give you an estimate with in a 1/4 to 1/2 turn of where your fuel screw should be.
AbnMP13
03-19-2007, 07:05 AM
Originally posted by almostred434
hornetgod13
ur awesome
do i have to have that stupid little D shaped tool to do it or what
for an 05 400

Check your dealer first, I got one from my dealer for free. They come with the jet kits so my dealer had an abundance of them.
hornetgod13
03-20-2007, 12:04 PM
Originally posted by AbnMP13
Check your dealer first, I got one from my dealer for free. They come with the jet kits so my dealer had an abundance of them.

I've also heard that dealerships charge a rediculous amount of money for the tool as well. DynoJet charges $2.99 for the tool and around $7.00 to ship it. That's the best price you'll find unless you get lucky like AbnMP13 and they give you one free of charge.

Check this thread out. It has more info on the topic.
http://www.exriders.com/vbb/showthread.php?s=&threadid=286852&perpage=13&pagenumber=1