jet and carb tunning advice pls

[daniel3877]

whats u peveryone, i could use a little carb advice, take a look at what i have done to my quad, i have been running a 310 je for a long time now and my quad has always been running perfect, that was in the spring and winter when it was 60 degrees outside, over the past week here summer has hit and its 96 degrees here now, since then my quad has smoked on startup, when i punch the gas it loads up and boggs down, i have fowled two plugs in the last week and i only have half the low end power i had before, if i keep the rpm's up it runs great , but i cant just punch it from low rpms like i use to be able to, some jet or carb adjustment advice would be appreciated , thanx all
Dan B.

 

[blasterfreek30]

try giving the carb a good cleaning, also lower ur main jet to mabe a 270

 

[hickskateboarder]

the warm air is less dense, meaning it can't burn as much fuel as the more dense, colder air. try jetting down a little.

 

[110octane]

Keep in mind this problem (jetting) is solved by trial and error. You will need to get a few different sized jets and try one out and if that one doesnt work, go to the next size and so on.

 

[blasterfreek30]

good call 110!

 

[blasterfreek30]

WTF is that^

 

[110octane]

WTF is that^

whats, what?

that spammer that was here?

 

[quam]

310 is prob too rich for your setup. of course your altitude and a handful of other parameters will affect your jetting, but i'd say that even in the winter 310 is prob too rich for you.
usually if you jet just rich enough in the winter and maybe a little too rich in the summer, you can find a nice medium that will be a good jetting year round.
unless you're a pro racer, then you'll prob wanna rejet 2 or 3 times throughout your riding day as the weather/temp changes....

 

[hickskateboarder]

well i wouldn't think 310 is too small at all..... i got a 350 in mine...w/e. but i would imagine it is too big. read the how to on jetting and plug colors.

 

[regal81455]

for every 10 degrees warmer you should jet down 1 size so im gonna take a stab and say try a 280...
same advice goes for when it get cooler but obviously you jet up 1 size for every 10 degrees colder it gets...