Help & FAQs    Search BCF    Members    Groups    Events Calendar
Resend my activation email : Register : Log in 
BCF: Bike Chat Forums


RMR 125 dies above idle

 Reply to topic
Bike Chat Forums Index -> The Workshop
View previous topic : View next topic  
Author Message

s91s91
L Plate Warrior



Joined: 17 Sep 2011
Karma :
PostPosted: 17:14 - 17 Sep 2011    Post subject: RMR 125 dies above idle Reply with quote
My sons having probs with his RMR125. We have fixed issues with a bad earth but now the bike is a bitch to start and once it finally starts it and when you touch the throttle at idle it dies. If we use the choke its a bit better. We have stripped the carb and all jets seem clean and we are about to renew the spark plug (only done 3K mls) and would appreciate any input? Thumbs Up
 Back to top
View user's profile Send private message You must be logged in to rate posts

andy_uk
World Chat Champion



Joined: 13 Aug 2011
Karma :
PostPosted: 20:26 - 17 Sep 2011    Post subject: Reply with quote
Fuel filter clean?
____________________
Aprilia Classic 125, GS500E, ER5-A1, ER5-C4, ER6 & an XJ6 project frame...
 Back to top
View user's profile Send private message Send e-mail You must be logged in to rate posts

Stuster
Scooby Slapper



Joined: 01 Nov 2009
Karma :
PostPosted: 20:36 - 17 Sep 2011    Post subject: Reply with quote
Hi,

As above and you checked that enough petrol is getting through? As in the fuel lines? You say you checked the jets and all good. What RPM does it get to with the choke on before it dies? Also have you checked for compretion? My DT did the same, was ok on the choke but died Sad turned out it needed a top end rebuild, as this is a 4 stroke though and only done 3k i cant see it needing a top end re-build? You checked that nothing has come loose when fixing the bad earth?

Best of luck mate Thumbs Up
____________________
Yamaha TZR125 x 3 Lifan LF125 14-F x 3 Jinlun 125 x 1 Honda CBR 600 F1 Honda Varadero 125cc I am now starting my Honda VFR400 NC30 Project Smile (Still ongoing 27/02/18) Daelim Roadwin 125R
 Back to top
View user's profile Send private message Send e-mail You must be logged in to rate posts

Nope.
World Chat Champion



Joined: 16 Feb 2011
Karma :
PostPosted: 21:01 - 17 Sep 2011    Post subject: Reply with quote
Im currently going through this problem with my 4t Sachs.

Check the following:

Airfilter.
Fuel
Carb Diaphragm
Carb Jets
Carb Floats
Carb Air mixture screw.
____________________
Former: Derbi GP1 50, Sachs XTC 125, Suzuki GSXR 400 GK73A, Kawasaki ZX7R, Suzuki DR250, Yamaha RD350
Current: 2011 Yamaha XT660Z Ténéré, 2003 Yamaha YZR-R1 5PW (In Build), 2009 Kawasaki ZZR1400
 Back to top
View user's profile Send private message Send e-mail Visit poster's website You must be logged in to rate posts

CarlosCBR
World Chat Champion



Joined: 12 Mar 2010
Karma :
PostPosted: 21:55 - 17 Sep 2011    Post subject: Reply with quote
My vote is for carb diaphragm.
____________________
https://www.youtube.com/watch?v=1OPv5mDPQ14

https://www.facebook.com/carl.simmonds.7
 Back to top
View user's profile Send private message Send e-mail Visit poster's website You must be logged in to rate posts

Nope.
World Chat Champion



Joined: 16 Feb 2011
Karma :
PostPosted: 22:03 - 17 Sep 2011    Post subject: Reply with quote
CarlosCBR wrote:
My vote is for carb diaphragm.


My first thought Smile
____________________
Former: Derbi GP1 50, Sachs XTC 125, Suzuki GSXR 400 GK73A, Kawasaki ZX7R, Suzuki DR250, Yamaha RD350
Current: 2011 Yamaha XT660Z Ténéré, 2003 Yamaha YZR-R1 5PW (In Build), 2009 Kawasaki ZZR1400
 Back to top
View user's profile Send private message Send e-mail Visit poster's website You must be logged in to rate posts
Quornholio This post is not being displayed because the poster has bad karma. Unhide this post / all posts.

s91s91
L Plate Warrior



Joined: 17 Sep 2011
Karma :
PostPosted: 11:39 - 18 Sep 2011    Post subject: Reply with quote
Thanks - all. Its a piston slide carb so no carb diaphram. I'm going to change the sparkplug - in case its knackered. Fuel flow seems fine and we have cleaned out the filter.
 Back to top
View user's profile Send private message You must be logged in to rate posts

s91s91
L Plate Warrior



Joined: 17 Sep 2011
Karma :
PostPosted: 18:36 - 18 Sep 2011    Post subject: Reply with quote
changed plug (NGK Iridium) and checked spark at plug. We got a spark but it wasn't as big as expected. Plenty of fuel getting through but bike wont start. Have had to take battery out to recharge it.
 Back to top
View user's profile Send private message You must be logged in to rate posts

Nope.
World Chat Champion



Joined: 16 Feb 2011
Karma :
PostPosted: 18:39 - 18 Sep 2011    Post subject: Reply with quote
s91s91 wrote:
changed plug (NGK Iridium) and checked spark at plug. We got a spark but it wasn't as big as expected. Plenty of fuel getting through but bike wont start. Have had to take battery out to recharge it.


IIRC, Iridiums are generally pretty crap in two strokes. Get a proper, regular NGK in there.
____________________
Former: Derbi GP1 50, Sachs XTC 125, Suzuki GSXR 400 GK73A, Kawasaki ZX7R, Suzuki DR250, Yamaha RD350
Current: 2011 Yamaha XT660Z Ténéré, 2003 Yamaha YZR-R1 5PW (In Build), 2009 Kawasaki ZZR1400
 Back to top
View user's profile Send private message Send e-mail Visit poster's website You must be logged in to rate posts

s91s91
L Plate Warrior



Joined: 17 Sep 2011
Karma :
PostPosted: 18:48 - 18 Sep 2011    Post subject: Reply with quote
Its not a 2 stroke, its a 4 stroke.

Had problems with a short circuit in my handlebar controls ( have been replaced) is it possible that this short could have had an impact on my battery despite giving okish results with VOM or usually from lights.

Engine does crank but doesnt turn over now. Carb has been cleaned several times now and I'm not getting anywhere

Any ideas?
 Back to top
View user's profile Send private message You must be logged in to rate posts

Dan_Davies
Scooby Slapper



Joined: 24 Aug 2011
Karma :
PostPosted: 19:47 - 18 Sep 2011    Post subject: Reply with quote
i had a similar problem on the lifan 125 Sad took it back to the garage i had it off as i'd only done 2000 mls on it and it had a years warranty. they couldnt find anything up with it "/
____________________
current ride: 07 suzuki sv650s
ex rides : lifan mirage 125
 Back to top
View user's profile Send private message Send e-mail Visit poster's website You must be logged in to rate posts
Quornholio This post is not being displayed because the poster has bad karma. Unhide this post / all posts.

s91s91
L Plate Warrior



Joined: 17 Sep 2011
Karma :
PostPosted: 21:07 - 18 Sep 2011    Post subject: Reply with quote
I assume its gravity fed.
 Back to top
View user's profile Send private message You must be logged in to rate posts
Quornholio This post is not being displayed because the poster has bad karma. Unhide this post / all posts.
N cee thirty This post is not being displayed because the poster is banned. Unhide this post / all posts.
Old Thread Alert!

The last post was made 14 years, 103 days ago. Instead of replying here, would creating a new thread be more useful?
  Display posts from previous:   
This page may contain affiliate links, which means we may earn a small commission if a visitor clicks through and makes a purchase. By clicking on an affiliate link, you accept that third-party cookies will be set.

Post new topic   Reply to topic    Bike Chat Forums Index -> The Workshop All times are GMT
Page 1 of 1

 
 You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum

Read the Terms of Use! - Powered by phpBB © phpBB Group
 
Debug Mode: ON - Server: birks (www) - Page Generation Time: 0.06 Sec - Server Load: 0.42 - MySQL Queries: 14 - Page Size: 88.77 Kb