anyone use 42 pilot without success??

[cals400ex]

i have installed a 42 pilot jet without any starting success in my 400ex. does anyone have suggestions? it starts the same as it did with the factory 38 in place. i even have to use the choke in the summer if the bike is cold. help would be great.

is your quad stock?

[cals400ex]

sorry, i guess i could of gave you some of the most important info. my quad is stock. it has a modded airbox lid and a twin air filter. factory pipe is gutted out. everything else is stock. spark plug is new and i am using the factory dpr8z. my bike ran choppy while it was cold so i moved the needle up one notch(clip down one notch). this cured the stumbleing problem while cold. i just want it to start without the choke. any help would be great

[Braff1]

I have a stock 400 with PC t-4 and air box mod that I tried to run a 42 pilot on. I run like crap. I droped the pilot to a 40 and the thing has run great ever since.

[cals400ex]

did your bike just run bad with the 42 in? or did it not start good either? do you need to use the choke with the 40 in? i just ordered a 45 because i did not have luck with the 42.

[Braff1]

When I put the 42 in it was boggy at the bottom. I tried adjust the air/fuel mix but it did not help. When I put the 40 in I set the air/fuel mix back to stock. Run good. Just recently I took out the choke mech. When I start it up I just pump the throttle a couple of times while turning it over. When it hits I just feather the throttle for a minute and then she will run on her own.