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12-25-2001, 11:01 PM
hello, i have a 2001 400ex. the weather here got cold and my 400 is having a hard time starting. when it idles during riding it will stall. i called my dealer and he said its not the jets but its the valves. said they needed adjusted. is that true. i thought it was the jets. thanks dan

MOFO
12-26-2001, 06:26 AM
This is normal for a stock 400EX. One of the biggest things we noticed is to increase your pilot jet to atleast a 40. All hondas are cold blooded so you have to keep that in mind as well.....


Eric

12-26-2001, 09:20 AM
thanks, so your saying its not my valves like my dealer said. its my pilot screw? cant i just turn the pilot screw in or out? thanks dan

knighttime
12-26-2001, 09:39 AM
Put in a 40 or 42 pilot jet. I put in a 42 pilot and now never have to choke it.

12-26-2001, 10:27 AM
thanks, im gonna put a 42 pilot screw in. do i have to adjust the idle when i put that in. and that is on the outside of the carb isnt it. sorry i dont know to much about working on the motor. i hope i just have to screw it in. thanks dan

12-26-2001, 10:37 AM
Bad news Dan,,Your gonna need to take the bottom of the carb off to put a new pilot screw in,,,also most dealers don't carry pilot jets other than stock size for the 400,,you might wanna check local bike shops or order one from dennis kirk.:( but the larger pilot jet will help with cold starts..:D

01-05-2002, 06:20 PM
I also found that my dealer didn't keep any #42 pilot jets. I was able to order some but I had to buy a package of five (should be in my hands on Wednesday, 1/9/02). Since I only need one, I will have four available if anyone needs one. They are a Keihin "21 Series" jet if that helps anyone.