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


Monkey bike running trouble

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

Scooterman
L Plate Warrior



Joined: 07 May 2017
Karma :
PostPosted: 08:42 - 07 May 2017    Post subject: Monkey bike running trouble Reply with quote
As daft as they look I have got my Jincheng M50 (Monkey bike) out of storage to use as a local commuter bike.
Been in the garage and not run for about 7 years.
Fired up after a few mins of kicking but a bit spluttery as the old petrol was shot.
Put new petrol in, replaced inline fuel filter and hoses to carb. Passed MOT without much trouble.
Starts and tics over fine, set off for work and after about 2 miles it died at the lights. Started after a few kicks and ran for another half a mile then after that it kept chugging and cutting out about every 100 metres and was a pig to start every time until I finally got to work.
Any ideas greatly appreciated. Smile
 Back to top
View user's profile Send private message You must be logged in to rate posts

jaffa90
World Chat Champion



Joined: 06 Apr 2016
Karma :
PostPosted: 09:15 - 07 May 2017    Post subject: Reply with quote
I would check the fuel flow to the carb, also did you strip and clean all the jet holes in the carb?
 Back to top
View user's profile Send private message You must be logged in to rate posts

Scooterman
L Plate Warrior



Joined: 07 May 2017
Karma :
PostPosted: 09:35 - 07 May 2017    Post subject: Reply with quote
Not that technical when it comes to bikes (cars I'm fine with). When pulling hose from carb, petrol comes out, but not had carb off as only happened yesterday. Odd that it only does it once it gets hot after a mile or so and otherwise tics over fine.
How do you go about cleaning the jet holes or can I run something like Redex through it?
The monkey bike is pretty basic so I think I can also rule out any electrics.
Also to drain the carb you lay it on its side and it drains out of a pipe at the bottom. When it's hot and knackered nothing seems to come out which obviously implies the fuel is stuck somewhere once hot.
 Back to top
View user's profile Send private message You must be logged in to rate posts

Nobby the Bastard
Harley Gaydar



Joined: 16 Aug 2013
Karma :
PostPosted: 10:25 - 07 May 2017    Post subject: Reply with quote
Scooterman wrote:
Odd that it only does it once it gets hot after a mile or so and otherwise tics over fine.


That sounds like an ignition coil breaking down when warm.
____________________
trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Triumph Sprint ST 1050
 Back to top
View user's profile Send private message You must be logged in to rate posts

Scooterman
L Plate Warrior



Joined: 07 May 2017
Karma :
PostPosted: 10:41 - 07 May 2017    Post subject: Reply with quote
ok, thanks. Looking at other forums, that's something that has been mentioned before. Where is it and is it easy to replace?
 Back to top
View user's profile Send private message You must be logged in to rate posts

Nobby the Bastard
Harley Gaydar



Joined: 16 Aug 2013
Karma :
PostPosted: 10:43 - 07 May 2017    Post subject: Reply with quote
Scooterman wrote:
ok, thanks. Looking at other forums, that's something that has been mentioned before. Where is it and is it easy to replace?


Follow the spark plug lead from the spark plug. The other end is the coil.
____________________
trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Triumph Sprint ST 1050
 Back to top
View user's profile Send private message You must be logged in to rate posts

Scooterman
L Plate Warrior



Joined: 07 May 2017
Karma :
PostPosted: 11:22 - 07 May 2017    Post subject: Reply with quote
Thanks, will take a look tonight, will I be able to see if it's cracked or anything or is it just a case of replace it and see if that fixes it?
 Back to top
View user's profile Send private message You must be logged in to rate posts

Nobby the Bastard
Harley Gaydar



Joined: 16 Aug 2013
Karma :
PostPosted: 11:25 - 07 May 2017    Post subject: Reply with quote
Scooterman wrote:
Thanks, will take a look tonight, will I be able to see if it's cracked or anything or is it just a case of replace it and see if that fixes it?


It will be internal damage that you can't see, resulting in the coil(s) inside and/or the connectors to teh outside losing contact with each other when it expands as it heats up.

There isn't really any way to test for this. The traditional way to check it is to borrow a known good one and trying it and see if the problem goes away. Then buy a new one....
____________________
trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Triumph Sprint ST 1050
 Back to top
View user's profile Send private message You must be logged in to rate posts

Scooterman
L Plate Warrior



Joined: 07 May 2017
Karma :
PostPosted: 16:29 - 07 May 2017    Post subject: Reply with quote
Cheers or the info, I'll take a look at tracking a new one.
 Back to top
View user's profile Send private message You must be logged in to rate posts

Shaft
World Chat Champion



Joined: 27 Dec 2010
Karma :
PostPosted: 23:21 - 07 May 2017    Post subject: Reply with quote
Before you shell out on a new coil, another quick thing you could try (as it has a tiny tank) is to ride it until it stops, then undo the fuel cap - if you can hear air rushing in, then your tank breather is partially blocked.

A new cap or breather pipe fixes the problem.
____________________
Things get better with age; I'm close to being magnificent........
20 RE Interceptor, 83 Z1100A3, 83 GS650 Katana
WooHoo, I'm a Man Point Millionaire! https://www.bikechatforums.com/viewtopic.php?t=234035
 Back to top
View user's profile Send private message Send e-mail You must be logged in to rate posts
Old Thread Alert!

The last post was made 8 years, 264 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: 0.05 Sec - Server Load: 0.33 - MySQL Queries: 13 - Page Size: 62.35 Kb