|
Enduro Intake/Carburetion - 2 stroke Jetting, Reeds, Air Filters, etc. |
|
Thread Tools | Display Modes |
#1
|
||||
|
||||
Hanging Idle after wide open
I have a hanging or surging idle after wide open conditions. Is that too lean on the main or needle or too rich? Works fine otherwise.
__________________
2018 EC 300 |
#2
|
|||
|
|||
Too small pilot jet or airscrew just too much open.
Try first turn airscrew more in, it should help if help but not enough you need step bigger pilotjet. Sent from Razr MAXX
__________________
plated 300EC 2008 |
#3
|
||||
|
||||
That would be my first test too. Either drop the slide a little or close the air screw a tad. If it still hangs and is strictly after doing WOT runs, I'd be thinking about the main. When you back the throttle off just a bit (from WOT) does it surge or run on, are you getting any pinging? What sized main are you running with which needle? Have you done a plug chop at WOT?
|
#4
|
|||
|
|||
chec left side crank seal too...
__________________
There is no such thing as bad weather! Only riding gear is improper or insufficient When it hurts you know you're allive! Gas Gas EC 300 Factory Racing 2012 - Ohlins TTX both front and rear - Rekluse Core EXP 2.0 + Rekluse clutch basket - Scalvini full exhaust system - S3 Head - Trusty adjustable PV cover That was ultimate setup for me... Now trying something else for a while... |
#5
|
||||
|
||||
You always want to set your main before any other circuits. Go out and run the bike hard for about 5 to 10 minutes in an area where you can keep it in the wide open position most of the time. A nice open field works great where you can keep it wide open for a couple hundred yards and then back off the throttle to turn and then get right back on the main again. Kill the bike immediately and do a plug check. You should jet for a nice light brown plug color. White too lean, dark brown too rich. Once you get the main set then go straight to the idle circuit. Bike should idle at its best at 1 to 3 turns out on the air screw. If its less than 1 you need a bigger pilot, if its more than 3 you need a smaller pilot. Now comes the fun part trying to get the right size needle to make it run the way you like it. Everybody has there own special needle that seems to work for them. I have had good results with the YZ needles, N3ew,N3cj and N3cw.
|
#6
|
|||
|
|||
Just curious, what needle are you using?
__________________
2018 Sherco 300SEF - Similar heritage to the original GG brand 2017 KTM 300XC- dipped in $ by previous owner 2012 KTM 350XCF-tagged and dual sported 2009 KTM 250XC - street legal CO trails connector 2015- Giant Trance carbon advanced-pedal power |
#7
|
|||
|
|||
If you mean my bike. It have stock needle clip2 pos. And 45/178 jetting as1 carb 38mm doma pipe and s3 billet head..works ok in mx track,single track and on road... Its road legal bike..
Sent from Razr MAXX
__________________
plated 300EC 2008 |
#8
|
|||
|
|||
Thanks, but I was curious about the OP.
The only time I have had hanging isle problems on my street legal GG is when I drank the kool aid about the Suzuki needles. For street use I'm back to a CCK for its smooth behavior. The aggressive needles do my rear tire in too quick for me!
__________________
2018 Sherco 300SEF - Similar heritage to the original GG brand 2017 KTM 300XC- dipped in $ by previous owner 2012 KTM 350XCF-tagged and dual sported 2009 KTM 250XC - street legal CO trails connector 2015- Giant Trance carbon advanced-pedal power |
#9
|
||||
|
||||
Quote:
|
#10
|
|||
|
|||
F or G, huh? I tried both a NEDW and then a NEDH. As I recall the H felt a little thick off idle when paired up with a 42 and the AS in the 1.7 to 2.2 range. It ran fine 80% of the time but exhibited a very different behaviour when you got the engine real hot. That's when the idle got flaky and it would feel real lean. Felt like it had an air leak. But the CCK needle back in and the hanging idle went away.
Maybe the needle jet is trashed (it is 12 years old) and that's contributing to the difficulty in tuning.
__________________
2018 Sherco 300SEF - Similar heritage to the original GG brand 2017 KTM 300XC- dipped in $ by previous owner 2012 KTM 350XCF-tagged and dual sported 2009 KTM 250XC - street legal CO trails connector 2015- Giant Trance carbon advanced-pedal power |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Make Add links open in new window? | roverhybrids | Suggestion Box | 8 | 07-16-2013 03:17 PM |
Hanging idle... pilot? vid | nokturnal | Enduro Intake/Carburetion - 2 stroke | 12 | 03-14-2013 05:46 AM |
my hanging idle fix | stainlesscycle | Enduro Engine - 2 stroke | 3 | 11-01-2011 05:25 AM |
05 FSE 450 Hanging Idle | twowheels | Enduro Engine 4 stroke (including EFI & Exhaust) | 12 | 10-03-2011 11:27 AM |
Single Track Mind Suspension Open House | mudwasp | Enduro Product Announcements | 5 | 02-21-2011 11:07 PM |