Guys here i am again with some new problems .

the last few days while the 2cv were standing waiting for it's new master cylinder ( thans viking ) i ve notice that it was extremely hard to start the car . Looking for the cause i ve notice that all the time that it was impossible to get it runnig the carb was out of gas. Putting some gasoine straight to the carb had a big succes. After that i told to myself that it must be the float valve so every day and every morning i had the engine running for 5 min. to make sure that both of battery and carb will be ready for the journey to garage. But on thursday i forgot to get it running on the evening so friday morning the car couldnt get started even with a new battery. Then i opened the carb again and i saw that there wasn't any gas inside it again.

In the meantime i i did saw some gas leaking on the engine but i couldn
t see exactly the spot. Today while looking much better i saw drops of gasoling on the accelerator axle on both sides of ther carb. So i am wondering if that axle has any orings inside that i should replace?

That was the first problem the second one is if you can think any reoson that the pump doesnt send gasoline to the carb. The pump is working ok ( when the pipe is out of the carb then it is working) but when it is on the carb it seems it cant send gas.

I checked the valve again and it seems to working ok. Where do you think that i have to look ?

as the spindles dont run through the float bowl/reservoir then its not loosing petrol there

Id re think the fuel pump and some of the pipework from the tank it sounds like its either drawing air or the petrol in the pipe is draining back to the tank

check the valve on the lid of the carb isnt leaking or sticking and when the lid is off any breaks or tears in the gasget will cause no end of problems

back to the spindles if they are worn then they can cause carburettor problems by allowing air in to the metered flow

Hi
interesting issue. As Sean says check the fuel line for splits etc, but you say if you disconnect the fuel feed from the carb the pump forces fuel out of the pipe?

I think you should check your needle jet to see if it is sticking. I guess the car runs ok once you have it started? The carb bowl works a bit like a toilet cistern. When the float falls then the valve opens to allow more fuel in. If the valve sticks then no fuel will get in.
This also tends to happen most when you use the car after a stop, when the car is running the float is moving up and down and the valve is always opening and closing.

It might be well worth your time getting a Solex VIT KIT for your carb as this will have new gaskets, o rings, carb filter and a needle jet.

Don't panic if you see fuel leaking onto the crank case from directly below the carb as there is a drain hole in the inlet manifold to allow excess fuel to escape rather than flood the engine.

the problem with the leaking is happening only when i use the throttle . I mean i open it and close it and then i can see on both of the edges drops.

Something that impressed me was that the shape of the tank has changed, like i put a hover and suck the air from the inside.


I ll replace the valve right now

the valve will be replaced today, but i think that the old one is good. the pipe have been changed a month ago or so . But for some reason when i am closing the lid of the carb then i cant blow air inside . there is something wrong iside there and i cant understand what i have done wrong.

Something else . When i am measuring this 17mm-19mm for the valve to open where is this dot that i have to measure?



i was thinking that the spindles must have something to seal themselvees . Something like orings. But i took it out and didn't find anything there . On the other hand i can see on some photos and diagrams that there is indeed something that seals the spindles on both sides. So are there any o rings there ?

not always some solexes had nylon seats but not sure ours do

if you look at the outside edge of the black plastic float there is a small pip from the casting thats the 19mm measuring point make sure that the aluminium frame the floats are on is not twisted and catching the sides of the carb.

Hold on a moment, you say your tank is changing shape? Right sounds like you have an issue with the vent on the tank. Have you changed the fuel cap recently?

2CV's need a cap with a vent hole. I've heard of people putting Citroen DS chrome caps on which fit but are not vented. Do you have running issues if you have no fuel cap on?

i think that this was my problem .

i was waiting to clarify that spot with the 19mm. so i am going down to do all the measurements and check the floats movement ..



No i didn't BUT while i was searching the fuel consumption i went and put a rubber in one cap which was made by a friend .

And i was thinking that maybe this is not the right way.

As you can understand i am the only guy in the world that can take down a 2cv in less than a year

ok Guys got the car fixed yesterday night i can hear it singing again.

Installed some new spark plugs and i very happy hear it sinnging again.

The problem was laying to the plastic floats as they were bended and probably couldn't move free in the carb.

Thanks again guys,
Pavlos

lol I managed to break a DS engine with 1st 2 months of ownership, seize 2 Wartburg 3 cyl two strokes engines and blow a hole in the side of the cylinder barrel on my Mobylette, so I know how you feel