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


Honda cd200 benly Timing problems

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

Usher4566
Spanner Monkey



Joined: 29 Apr 2011
Karma :
PostPosted: 17:26 - 29 Apr 2011    Post subject: Honda cd200 benly Timing problems Reply with quote
I have recently brought a cd200 benly to get me to work and back the bike starts okish but every now and agen it seems like it loses it's spark ie revs drop go erratic has any one had this problem .could any one give me advise on checking timings ect .it dies but always re stArts
____________________
New cd200 benly owner
 Back to top
View user's profile Send private message Send e-mail You must be logged in to rate posts

Teflon-Mike
tl;dr



Joined: 01 Jun 2010
Karma :
PostPosted: 17:41 - 29 Apr 2011    Post subject: Reply with quote
Benley covers a long production history and wide range of ignition system changes.
Is it points or CDi model?
6v or 12v?
Start with echecking the plug caps, then the HT leads, then the Coil, & working back through the system.
____________________
My Webby'Tef's-tQ, loads of stuff about my bikes, my Land-Rovers, and the stuff I do with them!
Current Bikes:'Honda VF1000F' ;'CB750F2N' ;'CB125TD ( 6 3 of em!)'; 'Montesa Cota 248'. Learner FAQ's:= 'U want to Ride a Motorbike! Where Do U start?'
 Back to top
View user's profile Send private message Visit poster's website You must be logged in to rate posts

Usher4566
Spanner Monkey



Joined: 29 Apr 2011
Karma :
PostPosted: 18:04 - 29 Apr 2011    Post subject: Benly Reply with quote
It has a 12v battery so guess 12 volt system when I take side cover off there is a single pick up and a rotor does that meen it's cdi?
____________________
New cd200 benly owner
 Back to top
View user's profile Send private message Send e-mail You must be logged in to rate posts

Teflon-Mike
tl;dr



Joined: 01 Jun 2010
Karma :
PostPosted: 18:50 - 29 Apr 2011    Post subject: Re: Benly Reply with quote
Usher4566 wrote:
It has a 12v battery so guess 12 volt system when I take side cover off there is a single pick up and a rotor does that meen it's cdi?

Yes.
And its pretty robust, so if you DO have a spark drop out, its likely to be the CDI unit, or the coil, or teh HT Lead, or a misileniouse earth.
However, benley motors, carburettor problems can often present like sparks.
What carb has it got on it?
Can you be more specific in the symptoms?
____________________
My Webby'Tef's-tQ, loads of stuff about my bikes, my Land-Rovers, and the stuff I do with them!
Current Bikes:'Honda VF1000F' ;'CB750F2N' ;'CB125TD ( 6 3 of em!)'; 'Montesa Cota 248'. Learner FAQ's:= 'U want to Ride a Motorbike! Where Do U start?'
 Back to top
View user's profile Send private message Visit poster's website You must be logged in to rate posts

Usher4566
Spanner Monkey



Joined: 29 Apr 2011
Karma :
PostPosted: 19:04 - 29 Apr 2011    Post subject: Reply with quote
Not sure wat carb will check in morning . Wen it's on tick over revs go up and down .and wen reving it , it sometimes loses revs like it's flooding ? Then picks up agen !
____________________
New cd200 benly owner
 Back to top
View user's profile Send private message Send e-mail You must be logged in to rate posts

Teflon-Mike
tl;dr



Joined: 01 Jun 2010
Karma :
PostPosted: 20:21 - 29 Apr 2011    Post subject: Reply with quote
Usher4566 wrote:
Not sure wat carb will check in morning . Wen it's on tick over revs go up and down .and wen reving it , it sometimes loses revs like it's flooding ? Then picks up agen !

I suspect it has the CV carb on it.... and its perished or got a tear in the diagphram!
But by remote control... wont bet on it!
Look at that carb though, cos pointing more that way!
____________________
My Webby'Tef's-tQ, loads of stuff about my bikes, my Land-Rovers, and the stuff I do with them!
Current Bikes:'Honda VF1000F' ;'CB750F2N' ;'CB125TD ( 6 3 of em!)'; 'Montesa Cota 248'. Learner FAQ's:= 'U want to Ride a Motorbike! Where Do U start?'
 Back to top
View user's profile Send private message Visit poster's website You must be logged in to rate posts

Usher4566
Spanner Monkey



Joined: 29 Apr 2011
Karma :
PostPosted: 20:36 - 29 Apr 2011    Post subject: Reply with quote
Many thx will Look at carb tommoz some time and keep you posted if find split in diathram.
____________________
New cd200 benly owner
 Back to top
View user's profile Send private message Send e-mail You must be logged in to rate posts

Usher4566
Spanner Monkey



Joined: 29 Apr 2011
Karma :
PostPosted: 07:11 - 30 Apr 2011    Post subject: Reply with quote
Hi carb checked out ok still think wen ride is like I lose spark on one side
____________________
New cd200 benly owner
 Back to top
View user's profile Send private message Send e-mail You must be logged in to rate posts

Paddy Blake
World Chat Champion



Joined: 29 Jun 2006
Karma :
PostPosted: 07:21 - 30 Apr 2011    Post subject: Reply with quote
Teflon-Mike wrote:
Usher4566 wrote:
Not sure wat carb will check in morning . Wen it's on tick over revs go up and down .and wen reving it , it sometimes loses revs like it's flooding ? Then picks up agen !

I suspect it has the CV carb on it.... and its perished or got a tear in the diagphram!
But by remote control... wont bet on it!
Look at that carb though, cos pointing more that way!

I would go along with what Mike says.
The diaphragm may have hardened or have holes in it.
 Back to top
View user's profile Send private message Send e-mail You must be logged in to rate posts

Usher4566
Spanner Monkey



Joined: 29 Apr 2011
Karma :
PostPosted: 07:27 - 30 Apr 2011    Post subject: Reply with quote
Hi carb checked does not have a diaphragm it has a float all looks ok
____________________
New cd200 benly owner
 Back to top
View user's profile Send private message Send e-mail You must be logged in to rate posts

Teflon-Mike
tl;dr



Joined: 01 Jun 2010
Karma :
PostPosted: 09:22 - 30 Apr 2011    Post subject: Reply with quote
Usher4566 wrote:
Hi carb checked does not have a diaphragm it has a float all looks ok

https://images.cmsnl.com/img/partslists/carburetor-cd125k3_bigma000124e13_f652.gif
should look something like this.
Sounds to me like you have taken the float bowl off the bottom, not looked at the slide, which if its the CV carb, which I believe it ought to be on later 12v CDI Benley, is controlled by a diagphram. (Part 8 in the pic)

As for loosing one spark.... well, the Benley is a 360 twin, both pistons ride and fall in unison, and there is a single spark trigger, becouse it fires every rev, sparking both pots at the same time, via a common coil.

When piston aproaching TDC on compression, and spark occurs, in one pot, lighting the fire for teh combustion stroke, the other pot is coming up on the exhaust stroke, with the exhaust valve open, and exhaust gasses in the cylinder that the spark in that pot wont light. Its called 'lost spark' ignition.

So there isn't really much to cause a timing fault on just one cylinder.

CB125's I have, have 180 cranks one piston up, one piston down, so they cant have common lost spark ignition, they have to have two individual ignition circuits, one for each pot, to time them to the right firing intervals, but on your bike, not so. Its very simple.

And I'd still suspect that carburettor, first.
____________________
My Webby'Tef's-tQ, loads of stuff about my bikes, my Land-Rovers, and the stuff I do with them!
Current Bikes:'Honda VF1000F' ;'CB750F2N' ;'CB125TD ( 6 3 of em!)'; 'Montesa Cota 248'. Learner FAQ's:= 'U want to Ride a Motorbike! Where Do U start?'
 Back to top
View user's profile Send private message Visit poster's website You must be logged in to rate posts

Usher4566
Spanner Monkey



Joined: 29 Apr 2011
Karma :
PostPosted: 11:48 - 30 Apr 2011    Post subject: Reply with quote
Hi many thx for help every one . Carb is different to pic has screw cap on top no diaphragm but good news is found problem was most simple thing spark plugs !!!!! But am very greatfull for all you help
____________________
New cd200 benly owner
 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 14 years, 34 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: 0.07 Sec - Server Load: 0.49 - MySQL Queries: 14 - Page Size: 78.69 Kb