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.


 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
  #1  
Old 07-18-2014, 02:27 AM
FDB's Avatar
FDB FDB is offline
Senior Member
 
Join Date: Jun 2014
Posts: 119
Unhappy Strange issue. Need advice.

Hi guys.
I have a strange question.
I bought a 2002 300 Gasser and started refurbishing it.
The previous owner managed to fit a YZ250 exhaust header and silencer on it, but everything else motor wise is stock.

Checked reeds, did the jets to spec, the works.
Started the bike, and rode it, and it has a terrible crackling at 1/4 to half throttle. No matter what I do, it stays there. Raised the needle clip, messed with the airscrew, checked the choke, set the float level to spec, everything.
Everything pointed to a rich pilot circuit.

So I thought that by dumb luck, let me put a slide needle I have lying around from a 2006 KDX200 and the bike is absolutely perfect.
The needle that came with the bike is a N1ED. Not sure what the code is for the KDX needle but it definitely less taper (thicker).
So I have a rich condition that the thicker needle is sorting out for me.
Question is.. Why?
I checked the choke. Everything is fine there.

A few things bother me on the bike that I will get to soonest:
1. It does not have the OEM rubber that connects the carb to the reedvalves. It is just a random rubber pipe. And the carb is about 2mm from the reed fitting and not perfectly aligned to the reed fitting pipe.
2. It has a YZ250 pipe on.
3. The powervalves was set to fully open, and fully closed manually to check that that was not maybe the cause. Same rich condition on both those settings.
4. I?m not sure where the spark timing should be on the 2002 300 Gasser. But surely that could not have the same symptoms as a rich condition, and a fatter needle won?t make that better.
5. The bike is probably due for a new set of rings. But it has a ton of compression still and goes like crazy with the KDX needle.

I?m stumped.
I can leave the KDX needle in there and all will be ok, but surely something is not right and the KDX needle is a plaster on a cut. I want to fix the cut.

Any ideas?
Reply With Quote
 



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
Strange spots on piston nokturnal Enduro Engine - 2 stroke 9 11-17-2013 11:57 PM
advice on slow starting and clutch issue Orujo Enduro Engine - 2 stroke 0 04-23-2013 06:08 PM
12 300 running strange shark4465 Enduro Engine - 2 stroke 21 01-05-2013 08:20 PM
Rather strange problem on the 11 300 six days bukwheat General Discussions & Announcements 7 04-15-2011 03:08 PM
No wonder my forks felt strange JCW Enduro Suspension 2 12-01-2007 04:45 PM




All times are GMT -5. The time now is 05:48 AM.


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