quad wont idle when cold

[dirtbike34j]

my quad wont idle when cold like when i have to start it up i have to give it throttel with and with out choke but when i have been riding for a while and its real hot it idles 4 ever idk how to fix it mabe the idle is set to low bit idk where it is located can some 1 help me or mabe ever send me some pics it would help alot thanks

[dirtbike34j]

does any body know a way to fix this ??

[ride_red666]

put a 42 pilot jet in and it will start up much better. stock is 38. buy a manual if you dont have one. it is a really easy to do. maybe try adjustin the idle screw as well, its the screw exposed on the bottom of the carb.

[Hondamaster5505]

x2 on the 42 pilot.

Mine just SUCKED starting. Wouldnt rev up, and would die constantly.

I threw the 42 in and what a difference. It starts up so easily and doesn't stall or anything. I always heard that it did that, but always though people over exagerated it. but they werent. lol

[bjg696]

Another on the 42 pilot, i just recently did it to mine, and its a nite and day difference. Its the best thing that will bring a 400 to life. Plus a few other mods. But a 42 pilot is the way to go...

[krt400ex]

i didnt find the 42 to help so much. the 400ex is just cold blooded is all.

[dirtbike34j]

ok thanks guys but mine does have a pipe and k&n airiler and open lid sould i still pu the 42 in there ?

a 42 pilot is good for anything lol starting it is easier and when you have mods done it should have the right amount of fuel to flow at idle and off idle. I know my brother doesnt have a bigger pilot jet with the HMF slip on, K&N, and stage 1 hotcam just the A/F screw is adjusted and he has to use the choke to start it when its 85 degrees out lol I keep telling him he needs a bigger pilot but heck what does a younger brother know right? same with his chain he has it so tight if you sit on the back bar and then try to move the chain up and down it moves maybe 1/8th" so its probally going to snap but he claims its fine lol

[dirtbike34j]

haha ok yea sounds about right haha thanks alot guys


man i love this site :D