Im at a 110 main. when I give it gas it falls on its face and sputters. Is that lean or rich?
klx 143 jetting help.
Started by
BeauGt
, Sep 13 2011 05:58 PM
16 replies to this topic
Posted 14 September 2011 - 05:09 AM
Stock carb, yx race head, dmc pipe and pod filter. All it had done before was the pipe. And there was a 90 main in it.
Posted 14 September 2011 - 09:37 AM
try a 100-105 main with a 42 pilot. Fuel screw 1.5 turns out. That carb is choking that motor though. See how that works. One way to tell is pull the choke and see how it reacts to throttle. If it cleans up then you need to richen the jetting.
Posted 14 September 2011 - 09:56 PM
I put the 100 in there and seems really good except for the bottom. There is a 38 pilot in it , im going to grab a 42 to see how that works. Thanks again for the help, ill let you know how it turns out.
Posted 15 September 2011 - 04:44 AM
the 42 should get you damn close. Use the fuel screw to get any fine tuning done. Just make sure you test it under load and fully warmed up.
Posted 20 September 2011 - 01:10 PM
I put the 42 in and it still bogs and wants to die off idel. Im at 4500 feet does that makes a differance?
Posted 21 September 2011 - 04:38 AM
what does your plug look like. Try pulling in the choke and see if it revs cleaner.
Posted 21 September 2011 - 05:54 AM
Plug looks good. Runs like Shit with the choke pulled out. It runs a little better with the air screw backed all the way out.
Posted 21 September 2011 - 09:49 AM
hmmm, usually if you pull the choke and it cleans up a bit you need a larger pilot.
Posted 21 September 2011 - 09:54 AM
seems like you are a bit rich if you are turning it out and its cleaning up. So the plug is brown or black? You may possibly need a 40 pilot but its so hard to tell. From what I can gether you are rich on the bottom.
Posted 21 September 2011 - 10:35 AM
Plug is black. Ok so I will try a 40 pilot. Should I jet the main down some?
Posted 22 September 2011 - 08:30 AM
make sure to set the air screw back to its starting point. 1.5 turns out
