Help regarding cb23 carboretor

[Xulfiqar]

The clips Im talking about are round ones to hold the electric vent valve onto the cleaner. They are on the back of the cleaner.

The electric valve vents into the cleaner itself with a small vacuum pipe that opens up in the air cleaner housing.

[Xulfiqar]

I got hold of one my old notebooks - infact asked Mrs to pick up one of my old ones and sift through the scribbled pages.

and I made a note as such.

One vacuum line from the 4 way comes to the centre part of this valve in the manifold, the port facing outwards goes to the choke breaker and has a slow bleed filter with the number (20 or something) in between and the port at its inner corner goes to the aircleaner BVSV which chooses between hot and cold air.

The ports are named as J K an L on this valve.

I cannot confirm if this was for your CB engine.
Im gonna get an earful for this at home.

[Xulfiqar]

The issue is that the carburettor may have been changed out before - the diagrams only work best when everything original is in place. My reason for saying this is that - please look and inspect that you have a choke breaker working.

[usman505]

I got hold of one my old notebooks - infact asked Mrs to pick up one of my old ones and sift through the scribbled pages.

and I made a note as such.

One vacuum line from the 4 way comes to the centre part of this valve in the manifold, the port facing outwards goes to the choke breaker and has a slow bleed filter with the number (20) in between and the port at its inner corner goes to the aircleaner BVSV which chooses between hot and cold air.

The ports are named as J K an L on this valve.

Im gonna get an earful for this at home.

manual says that that the one pipe from the above showed valve will do to the choke opner or breaker directly
1 will connect(facing outward) to the air cleaner directly(inner corner one)
1 will connect(facing outward) via f shaped connector to temperature sensing valve(under air cleaner)
and small pipe on side of where break servo is connected(showed with red colour on previous page)

btw there is no vent valve cliped on air cleaner....
i know its on the side of cleanrr

[usman505]

The issue is that the carburettor may have been changed out before - the diagrams only work best when everything original is in place. My reason for saying this is that - please look and inspect that you have a choke breaker working.

yes choke breaker is ok i thnk because when i suck it the rod moves inward and when released i goes back quickly

[Xulfiqar]

manual says that that the one pipe from the above showed valve will do to the choke opner or breaker directly
1 will connect(facing outward) to the air cleaner directly(inner corner one)
1 will connect(facing outward) via f shaped connector to temperature sensing valve(under air cleaner)
and small pipe on side of where break servo is connected(showed with red colour on previous page)

btw there is no vent valve cliped on air cleaner....
i know its on the side of cleanrr

that will introduce an airleak, the vacuum system should remain closed. One to choke breaker, one to aircleaner thermostrip one to 4 way tee - I also am thinking that you should have a vacuum pipe port near this valve too. It should be on or under the carburettor.

[usman505]

near this valve there r two ports only, one on carby base(below accelerator cable) which you said will connect to the oil cap
and one is on the side where break servo connects. indicated with red circle on previous page ....

[Xulfiqar]

so you need to use a port from the 4 way tee

[usman505]

so you need to use a port from the 4 way tee

for oilcap?

[Xulfiqar]

oil cap goes direct to its own port, for this 3 way valve in the manifold - take vacuum line from the 4 way and push it on the centre one, the inner corner one goes to the aircleaner thermostrip valve, the outer one goes to the choke breaker.

[usman505]

oil cap goes direct to its own port, for this 3 way valve in the manifold - take vacuum line from the 4 way and push it on the centre one, the inner corner one goes to the aircleaner thermostrip valve, the outer one goes to the choke breaker.

ok got your point ..
i will do which said

waise why manual says that choke breaker will go the center one (valve on manifold)??

[usman505]

no havent test yet .but the hose to which break srvo is connected has some serious sucktion
if i remove the pipe in below pic the cars engine stops immideatly
this on :

the small one ihas serious sucktion

BTW there is another place near break servo vacuum pipe indicated with red circle but this is connected on wrong place .where to connect it?

it is connected on the place where oil cap should connect...

[Xulfiqar]

utilize that small one then. The concept is that you need to get vacuum routed into and from that 3 way valve if you have got a strong constant signal at this little port then go ahead and utilize it.

get yourself a vent valve too, ask any scrapper for the "switch" that is clipped onto the aircleaner of charade - It is held by a round clip which is riveted to the aircleaner housing. That switch would have two ports, one goes to the little pipe that is built into the airbox and one goes to the vacuum line 4way in original configuration. The switch has a two pin electric connection too. You will have its wiring near it.

[Xulfiqar]

ok got your point ..
i will do which said

waise why manual says that choke breaker will go the center one (valve on manifold)??

Then do as the manual says, Im relying on memory and the notes I took a long time ago.

[usman505]

Then do as the manual says, Im relying on memory and the notes I took a long time ago.

bro plz dont get angry i was just asking..

[usman505]

utilize that small one then. The concept is that you need to get vacuum routed into and from that 3 way valve if you have got a strong constant signal at this little port then go ahead and utilize it.

get yourself a vent valve too, ask any scrapper for the "switch" that is clipped onto the aircleaner of charade - It is held by a round clip which is riveted to the aircleaner housing. That switch would have two ports, one goes to the little pipe that is built into the airbox and one goes to the vacuum line 4way in original configuration. The switch has a two pin electric connection too. You will have its wiring near it.

yes it is sucking .....
if i remove this small pipe engine stalls and turns off

[Xulfiqar]

Im not angry or anything - I dont have the manual, but when I have something infront of me to work on I can recall how it went, vacuum ports are like logic circuits so if I need solid manifold vacuum I choose the nearest and neatest path. Which in your case is that little pipe that is hidden in the picture.

[usman505]

Im not angry or anything - I dont have the manual, but when I have something infront of me to work on I can recall how it went, vacuum ports are like logic circuits so if I need solid manifold vacuum I choose the nearest and neatest path. Which in your case is that little pipe that is hidden in the picture.

ok g now understand every thing ..will do this tomorrow inshaallah..dashpot and distributor connections are already done with your help,seriously bro i must say you are PROFESSIONAL and EXPERT in actual words...thank you very much for your help , i am just a student of 2nd year (i.com) not an expert but u guide me very well ...thanks

[Proverbial_Slang]

Whats the status? How's the Dai running now?

[usman505]

Whats the status? How's the Dai running now?

rpm is stable now ,car is giving an average of 12km per litr i know its low, carb need some cleaning and adjustment stuff btw timming is also advanced due to cng..
and choke breaker is not connected still was busy in exams so....
btw m little satisfied that things r on their place to some extend ...