1982 CD200 Benly..

I couldn't think of a nicer place to ask for advice with my Benly, so
here goes.

I can't get it to run properly. Firstly, I suppose I should tell you
what has been replaced on the bike. It has points ignition by the way.

Condensor, Coil, Plugs, Caps, Carb Serviced and cleaned, new battery
and everything seems to work. That is, until I put it all together.
It'll run, but often only on one cylinder and not very well. However I
have managed to get it firing on both occasionally, and when it does,
it runs fine. I've reset the air screw as per Mr Haynes instructions,
and the air filter is also good (Ive even tried without it).

It's running a little rich, but not too badly. I can get a spark on the
plugs, although addmittedly a pretty crap one, when they're out of the
engine. Stick them in again and it's pot luck whether they ignite any
fuel or not. I just cant figure out what's stopping it from running,
and continuing to run!

Regards

Owen

 

And while I think about it, I replaced the points too.

 

....and set the timing

 

o_morris wrote

About the only thing you have missed out from the list of replaced
electric's are the plug leads.

 

I couldn't think of a nicer place to ask for advice with my Benly, so

Change the fuel.
Clean out the carbs.
Make sure all the Earth points are good, especially Battery to Engine case
if there is one.
Clear the fuel tap of crap
Make sure there aren't any air leaks at the carbs
Check for clogged air filter.
Then come back and tell how it is


--



R_O_B_B_O
Trophy 1200 1998
BotaFOF #19. E.O.S.M 2001/2002/2003/2004.
B.O.S.M 2003, 2004, 2005
FURSWB#1 KotL..YTC449
PM#7
..

 

If it's running wrong on one pot, it *has* to be valve or piston
related. The Benly has just one carb, one coil and one set of points,
shared between both pots.

OTOH, if someone has had the top off and got the cam timing one tooth
out, that might do it.

Hard to say without looking at it, but it's such a simple bike....

 

Carb, singular, twonk.

 

R obbo? He'z just ziz guy, you know?

Crap fuel wouldn't cause poor spark.

He's done this.

That is about the only thing I can think of, and plug leads.

He's done this as well.

 

Or Plug, HT lead or cap. Which would be my first port of call but that's
already been covered.

Given the OPs original comment on a crap spark I'd suggest changing the
coil as they may be breaking down under load and giving the impression of
a duff pot.

I once used a laser temperature measuring thing which is excellent for
identifying a misfiring pot by pointing it at each exhaust header. I saw
one quite cheaply (about £20) 'somewhere' on the internet.

 

Oi, who are you calling a weirdie?

cnut.


and besides, I've not got to the bifocal stage quite, yet.

 

^^^^^
Infra-red sensor, ITYF.

A wet sponge is cheaper and quicker.

--
Ivan Reid, Electronic & Computer Engineering, ___ CMS Collaboration,
Brunel University. Ivan.Reid@[brunel.ac.uk|cern.ch] Room 40-1-B12, CERN
GSX600F, RG250WD, DT175MX "You Porsche. Me pass!" DoD #484 JKLO# 003, 005
WP7# 3000 LC Unit #2368 (tinlc) UKMC#00009 BOTAFOT#16 UKRMMA#7 (Hon)
KotPT -- "for stupidity above and beyond the call of duty".

 

Anyone currently wearing a cap that fits, mister.

Half moons then, innit?

 

Maplin. ~£14.00.
Excellent for doing *accurate* wheel alignment on cars. (non-contact
temperature profiling across tread pattern after test run).

JB

 

I used to do that. ...when I had fingerprints.

--
Ivan Reid, Electronic & Computer Engineering, ___ CMS Collaboration,
Brunel University. Ivan.Reid@[brunel.ac.uk|cern.ch] Room 40-1-B12, CERN
GSX600F, RG250WD, DT175MX "You Porsche. Me pass!" DoD #484 JKLO# 003, 005
WP7# 3000 LC Unit #2368 (tinlc) UKMC#00009 BOTAFOT#16 UKRMMA#7 (Hon)
KotPT -- "for stupidity above and beyond the call of duty".

 

Or a plant sprayer.

 

This is thing I meant:
http://www.maplin.co.uk/Module.aspx?ModuleNo=36598&doy=6m9

It's main advantage is it'll identify a misfiring pot which will be at a
lower temperature but still hot enough to hiss.

 

^

^
not?

OK, but the laser is just to show you where you're pointing; nothing
to do with its operation.

--
Ivan Reid, Electronic & Computer Engineering, ___ CMS Collaboration,
Brunel University. Ivan.Reid@[brunel.ac.uk|cern.ch] Room 40-1-B12, CERN
GSX600F, RG250WD, DT175MX "You Porsche. Me pass!" DoD #484 JKLO# 003, 005
WP7# 3000 LC Unit #2368 (tinlc) UKMC#00009 BOTAFOT#16 UKRMMA#7 (Hon)
KotPT -- "for stupidity above and beyond the call of duty".

 

Dr Ivan D. Reid wrote

What!! Surely there is a way of making the laser do something useful
other than light the place up? C'mon. I was looking forward to this
really neat explanation of how the colour changed under the influence of
temperature and stuff or something. I am heartbroken now I am.



--
steve auvache
750 VT Shadow (something for the weekend)
Bindit 600 (was lost and now is found)
GS500E (small but perfectly formed)
mongvan (dehydrated)

 

Using the patented Mavis Beacon "Hunt&Peck" Technique, steve auvache

"Odd, everything I point this stupid laser thermometer at appears to be
at 500C. Even you dear! Dear? Hello? Hello? Oops..."

--
Wicked Uncle Nigel - Manufacturer of the "Champion-105" range of rearsets
and Ducati Race Engineer.

WS* GHPOTHUF#24 APOSTLE#14 DLC#1 COFF#20 BOTAFOT#150 HYPO#0(KoTL) IbW#41
SBS#39 Enfield 500 Curry House Racer "The Basmati Rice Burner",
Honda GL1000K2 (On its hols) Kawasaki ZN1300 Voyager "Oh, Oh, It's so big"
Suzuki TS250 "The Africa Single" Yamaha GTS1000

 

Using the patented Mavis Beacon "Hunt&Peck" Technique, sweller

Damn you, you commie pinko bastard! DAMN YOU!

I'm going to have to buy one now.

<sob>

--
Wicked Uncle Nigel - Manufacturer of the "Champion-105" range of rearsets
and Ducati Race Engineer.

WS* GHPOTHUF#24 APOSTLE#14 DLC#1 COFF#20 BOTAFOT#150 HYPO#0(KoTL) IbW#41
SBS#39 Enfield 500 Curry House Racer "The Basmati Rice Burner",
Honda GL1000K2 (On its hols) Kawasaki ZN1300 Voyager "Oh, Oh, It's so big"
Suzuki TS250 "The Africa Single" Yamaha GTS1000