Rieju & GasGas Legacy Riders Club Forum  

Go Back   Rieju & GasGas Legacy Riders Club Forum > GasGas Enduro Technical Forums > Enduro Intake/Carburetion - 2 stroke

Enduro Intake/Carburetion - 2 stroke Jetting, Reeds, Air Filters, etc.


Reply
 
Thread Tools Display Modes
  #1  
Old 11-11-2018, 03:07 PM
Wypipo Wypipo is offline
Senior Member
 
Join Date: Sep 2018
Posts: 131
Default Bogging down off idle

Until today I was running
NEDW 2
170 main
42 pilot
AS 1 out

I felt it might?ve been running a bit lean so I swapped to
172 main
45 pilot
AS 1.5 out

When coasting along in gear with the throttle completely closed and going slow, when I crack the throttle wide it give me the BWAHH sucking for air noise and lose all power for a second before taking off. I think this means a lean condition? I?m confused because I richened everything in the carb except the needle position. What is going on?


Reply With Quote


  #2  
Old 11-11-2018, 06:12 PM
Davehuge's Avatar
Davehuge Davehuge is offline
Senior Member
 
Join Date: May 2017
Location: English but now based in South of France.
Posts: 470
Default

First rule of tuning your carb jetting...just change one setting at a time...test it and see what result is...

To be sure, go back to your original setting of...

NEDW 2
170 main
42 pilot
AS 1 out

What throttle opening does it feel lean at? Change the component that relates to that throttle opening.

Best of luck, Dave.
Reply With Quote
  #3  
Old 11-11-2018, 06:35 PM
Wypipo Wypipo is offline
Senior Member
 
Join Date: Sep 2018
Posts: 131
Default

It never actually felt lean with the original settings. For the pilot I was just going off of the idle speed and air screw position. I was reading that I?d want my air screw between 1.5 and 2.5 out but at 1.5 I was getting a super fast idle so I thought I would try a bigger pilot. For the main I increased the size just based off of others suggestions I still haven?t tried a chop test. I kept the 172 main and went back to 42 pilot with AS one turn out. The bogging went away. Is it possible that a too rich setting can cause that bogging down hesitation?
Reply With Quote
  #4  
Old 11-11-2018, 06:49 PM
Davehuge's Avatar
Davehuge Davehuge is offline
Senior Member
 
Join Date: May 2017
Location: English but now based in South of France.
Posts: 470
Default

Yes, for sure, too rich or too lean can feel like it's bogging. Basically if the mixture isn't right, too rich or too lean, it just won't pull cleanly.

Sometimes it difficult to feel if it's lean or rich (for me anyway!), the only way to be sure is to experiment...

First, try going richer - is it better or worse?

Then try going leaner - is it better or worse?

All the best, Dave.
Reply With Quote
  #5  
Old 11-11-2018, 08:46 PM
Wypipo Wypipo is offline
Senior Member
 
Join Date: Sep 2018
Posts: 131
Default

Yes I have a hard time telling if it is slightly lean or slightly rich. But this time I did richen it 3 sizes on the pilot and noticed a huge difference in a bad way. So I think I?m happy where I am for now. Thanks for your help
Reply With Quote
Reply



Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
bogging past around 4500rpm. 06 EC300 stian Enduro Engine - 2 stroke 16 06-15-2015 03:15 PM
2011 - EC250 - Exteme bogging WOT low rpm. Please help! gorillam Enduro Engine - 2 stroke 4 06-04-2015 01:07 PM
Bogging and top end Capz85 Enduro Intake/Carburetion - 2 stroke 14 04-05-2015 10:56 AM
carb probs .bogging/ hesitation hippygary Enduro Intake/Carburetion - 2 stroke 4 09-12-2013 12:10 AM
03 GasGas 450FSE Bogging down, TPS value? ktownrider Enduro Engine 4 stroke (including EFI & Exhaust) 2 12-12-2007 10:34 PM




All times are GMT -5. The time now is 01:48 PM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright 2009 - GasGasRider.org