Jetting Help
#1
Posted 24 August 2015 - 08:13 PM
Looks like:
http://ecx.images-am...51uOzr80VuL.jpg
#2
Posted 24 August 2015 - 08:33 PM
#3
Posted 25 August 2015 - 07:34 AM
#4
Posted 25 August 2015 - 07:38 AM

Number of downloads: 2
Additionally, a set of micro metric drills fills in sizes not covered by AWG drills.
Remember that flow is proportional to area, which is proportional to diameter squared.
#5
Posted 25 August 2015 - 08:01 AM
Symptomes mainly are the pilot size is off, air screw is all the way in (I think) and it doesnt quick idle plus stalled with quick throttle opening. I'll verify the setting/current jet sizing later.
#6
Posted 25 August 2015 - 08:08 AM
#7
Posted 25 August 2015 - 12:32 PM
So my FUEL screw is turned all the way in, bike starts and runs under a little throttle, doesn't idle for more than a few seconds. I'm thinking the pilot jet is to large at this point.
#8
Posted 25 August 2015 - 12:41 PM
It sounds lean to me. Personally, I'd clean the pilot jet properly (that does not mean spraying carb cleaner through it) and set the mixture screw at about 1.5 turns out and try again.
#9
Posted 25 August 2015 - 12:46 PM
Also if disassembling the jets and blasting them both directions with carb cleaner is not how you clean them what is? Or did you mean spraying carb cleaner into/though the carb assembled was not the right way?
#10
Posted 25 August 2015 - 12:52 PM

Number of downloads: 0
There are lots of different chemicals you can soak a jet in that will clean it, but just spraying carb cleaner through generally does not.
#11
Posted 25 August 2015 - 01:25 PM
#12
Posted 25 August 2015 - 01:38 PM
If you hand-drill a jet it will not be perfect. But it will get you in the ballpark -- especially on a single cylinder where you don't need to match another jet. Main jets are typically about 3% apart in terms of flow. You can calculate more closely than this by ratioing the squares of the diameters.
A partly clogged jet may be 10 to 20% low in terms of flow.
#13
Posted 25 August 2015 - 01:55 PM
#14
Posted 25 August 2015 - 08:09 PM
Also im not sure I have the right setup at all. The pilot is a 32 and main is 82. Its am 88 kit with china 18/19mm carb. Main is a k-branded pilot was not.
#15
Posted 26 August 2015 - 06:14 AM
A copper wire that small may just be too flexible to push through the buildup.