wont run cold

[400excaleb]

when it is cold it will start but then pops and sounds like it is missing until it gets warmed up, also if i let out of the throttle it will idle for about 2 sec then die, what should i do to fix

[Honda#4]

have you put in a #42 pilot jet yet. If not put that in and that will make it somewhat better for cold start ups.

[mic 902]

Before i rebuilt my EX it did that. Mine had 440 kit, 10:1 piston and then the head was flowed. When we pulled it down it had huge carbon build up, valves weren't seating properly and the sleeve had warped from heat.
I hope your engine isnt in that sort of shape, it is expensive to get it going well again.
Do you have alot of hours on your top end? Might just need a set of rings to freshen it up a bit.

[hornetgod13]

I think this is fairly common. I installed a #42 pilot and bumped up my idle to take care of it. Works great now.

[HondaEXrider22]

Mine does the same, not as bad. I choke it, warm it up easy with about 1/8 throttle, then choke off, and drive within first gear for a little. All slow and easy, which warms it up good. From my expreience warm it up good before you ride.

[94F450SD]

mine has been like that since the day i got it,and i bought it brand new off the showroom floor.even with the bigger pilot jet its stil hard to start and keep running when its cold.

[jordan_m6]

My dealer told me before i bought the bike that it was a cold natured bike and doesnt like to start in the winter.

[400excaleb]

i havent put a 42 pilot in it so u think that will help, what does theat change besides the idle

[blasterandy]

i found that a good quality spark plug can help tremendously. Also if you feel like investing in an icat thats what my friend did and his would start in a freezer. :p

[hornetgod13]

The #42 jet helps ease the frustration of cold starting and idle issues when the motor is warming up. It does little else for the quad except when at idle and less than 1/8th throttle.

[fastleo]

icat ?


what is that?

im still learning every day about these things.;lol;

[blasterandy]

This is an icat. (http://www.motosport.com/offroad/productDetail.php?prodId=365623&nav=4&sMMY=HONDA;TRX400EX;2003) :blah: