Rieju & GasGas Legacy Riders Club Forum  

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

Enduro Engine - 2 stroke Cylinder, Piston, Tranny, Bearings, Clutch, Pipes & Silencers, etc.


Reply
 
Thread Tools Display Modes
  #1  
Old 11-03-2010, 04:49 AM
fittal fittal is offline
Member
 
Join Date: Nov 2010
Posts: 2
Default EC300 engine noise

My 300 makes a "clacking noise" when I shut off the power while riding. It doesn't do it when I rev the engine at standstill.
There is good compression - its quite hard to kick over so unlikey to be piston slap?
The bike goes fine, perhaps not as strong top end as I expected.

Should I be worried or is this normal?

Also the clutch makes a low pitched screech at times - others on this BB have mentioned this so I take this as normal?

Its on 08 model

Thanks in advance


Reply With Quote


  #2  
Old 11-03-2010, 05:06 AM
wence's Avatar
wence wence is offline
Bronze Level Site Supporter
 
Join Date: Nov 2008
Location: Adelaide South Australia
Posts: 1,159
Default

Would the clacking noise sound like chain slap?
If so it could very well be this or the powervalve.
Cheers Mark
Reply With Quote
  #3  
Old 11-03-2010, 05:17 AM
stainlesscycle's Avatar
stainlesscycle stainlesscycle is offline
Site Sponsor
 
Join Date: Jun 2009
Location: morgantown, wv
Posts: 1,608
Default

the clacking noise may be power valve slapping. from my experience, i only hear it on acceleration when i really wack the throttle and lug the motor (i.e. in wrong gear...)

does it only clack on decel?? that's usually chain slap...
__________________
07 ec300
was 00 xc200 now a 00 xc300. now parting out.
99 ec300 (now a pile of parts which are for sale)

Stainless Cycle - Motorcycle Bolt Kits
www.stainlesscycle.com
Reply With Quote
  #4  
Old 11-03-2010, 06:39 AM
iancp5's Avatar
iancp5 iancp5 is offline
Senior Member
 
Join Date: Aug 2006
Location: U.K.
Posts: 829
Default

+1 on chain slap.
"They all do that sir".
Reply With Quote
  #5  
Old 11-03-2010, 09:10 AM
fittal fittal is offline
Member
 
Join Date: Nov 2010
Posts: 2
Default

power valve slapping on what? - is it a problem

I'm sure its not the chain slapping on the swing arm - its definetly coming
from the engine.

Thanks for replies
Reply With Quote
  #6  
Old 11-03-2010, 09:31 AM
DaveH DaveH is offline
Member
 
Join Date: Oct 2010
Posts: 24
Default

Had a horrible rattle on my 300...mainly when just getting on the throttle and loading up the engine.....bike has not done much mileage from new....stripped and cleaned powervalve etc...still there.

Compression was good, but pulled the barrell anyway and found excessive piston clearance but NO obvious wear on either the piston or bore....took bits to UK GG importer (just up the road) and tried a new A and B pistons.
New A piston better fit than the old one, but B piston loads better. ...rear of barrell stamped with letter B - does this mean it was fitted with the wrong piston at the factory ??

I know the history of the bike so know it has never had another piston fitted..

Anyway...all rattles have gone now......
__________________
Dave H

BMW R1150GS
Moto Morini 1200 Corsaro
BMW R1200S
GasGas EC300
Reply With Quote
  #7  
Old 11-03-2010, 09:42 AM
iancp5's Avatar
iancp5 iancp5 is offline
Senior Member
 
Join Date: Aug 2006
Location: U.K.
Posts: 829
Default

Quote:
Originally Posted by fittal View Post
power valve slapping on what? - is it a problem

I'm sure its not the chain slapping on the swing arm - its definetly coming
from the engine.

Thanks for replies
There's an easy way to confirm. Overtighten the chain and ride down the road once or twice. Not much and not blast round rough ground. Don't tighten the chain like a guitar string just tighter than correct. I had this issue with my first GG and thought it was the engine too so worth being sure before going on a big hunt in the engine.
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
Engine noise roostafish General Discussions & Announcements 11 11-24-2009 12:01 PM
Unidentified engine/gearbox noise PBWR450 Enduro Engine - 2 stroke 3 03-09-2009 09:04 PM
Top end noise ? Link Enduro Engine - 2 stroke 7 01-17-2008 03:33 PM
Bad Noise roostafish General Discussions & Announcements 17 01-10-2008 08:30 AM
2002 ec 250 Engine noise thingymijig Enduro Engine - 2 stroke 5 02-22-2007 05:08 AM




All times are GMT -5. The time now is 06:56 AM.


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