How should i jet it?

[85 250sx]

Should i jet my 86 250r carb with the air box lid off or with it on. The entire trike is stock exept a K&N airfilter and an outerwear. what are the advantages of running with out the lid? and if i do jet it with out the lid on could i just put it back on real quick for some quick muddn or snow riding? Thanks for the help

[85 250sx]

come on no one can help? all i realy want to know is if i jet my carb with no airbox lid can i just put my lid back on around them wet or muddy places and still be able to ride normaly or will if affect it enought to ride like crap

[200xman]

It will just run a little richer with the airbox lid on. Should be fine.

[StangLX302]

I would jet with it off. It won't hurt to run a tad rich while your running in the mud. But it might hurt something if you run too lean because you jetted with the lid on and then pulled it off for dry riding.

[Dammit!]

if you jet it perfect for the lid off, when you put the lid on it's gonna run rich. I wouldn't jet it for the lid off unless you intend to leave it off.

[85 250sx]

yes i do plan on leaving the lid off and maybe only putting it back on for a short while durring realy wet situations

[a-camp]

if you jet it perfect for the lid off, when you put the lid on it's gonna run rich. I wouldn't jet it for the lid off unless you intend to leave it off.

Ya what he said.

Ok 150 main 42 pilot 2 1/4 turns out