[Need jetting help on 310 engine with 39mm carb] - ATV Riders Forums - Honda, Yamaha, Suzuki, Kawasaki, Polaris, CanAm, Arctic Cat, Kymco ATVs

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Need jetting help on 310 engine with 39mm carb
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Posted by: tito450r

Hello guys, I have a CT 310 engine with a 39mm air striker carb. It has DGH needle. I need jetting help because it's too rich with a 180 main jet and 52 pilot. What do you think I need to put on the carb???

Posted by: kustomfab2003

Need some #'s on elevation and such but my 350pv with a 39 PWK is at 172 and one clip up from center on the needle.

Posted by: tito450r

I am at sea level.

Posted by: redrooster310r

my 310 with a 39 pwk open box runs 180 182 main and 55 slow sea level ny

Posted by: tito450r

I put a 178 main jet, 55 pilot jet and DGH needle on the 3rd clip and it's still like too rich. More suggestions????

Posted by: redrooster310r

what do you mean rich...smokes alot even after warm up....fouls plugs maybe plug to cold? ngk br8es come to think of it ....my 310 ran rich with a 182 main......lean it out and do a plug chop? that 310 should pull your arms....hard when its on.

Posted by: 86 Quad R

visit THIS site. it has great info regarding carb tuning.

Posted by: tito450r

It's like smoking a lot when cold but you gotta wait a lot to have it cleaning better.