How to fix a carburetor | Carburetor repair

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OVERALL DIFFICULTY INDEX: 5/10
IF YOU HAVE NO TOOLS, YOU PAY $5 TO GET THEM FOR THIS JOB
IF YOU HAVE NO EXPERIENCE YOU SPEND 1.5 HOURS TO CARRY OUT THIS JOB
NO SMOKING DURING THIS INTERVENTION

BEFORE YOU START

The below method is a quick method with the carburetor still in place. It is not a good practice and thus should be used only when the overall carburetor condition is good and when it is relatively clean. Visit our pages for carburetor removal and carburetor cleaning if you decide to do so.
It allows to save time especially on carburetors that require a coolant loop as it does not lead to any drainage or purge or refill.
Dropping screws will turn into a real headache. A particular care should be considered when handling items that have been dismounted from the carburetor body.

Note: The below pictorial concerns a Solex 34-34 Z1 (34/34 Z1) carburetor found on Citroën BX, Citroën XM 2.0, Peugeot 305, Peugeot 309, Peugeot 505 2.0, Peugeot 605 2.0, etc. Works on other carburetors remain much similar.

DISCLAIMER:
Our pictorials are of informative nature and do illustrate works carried out by ourselves at our own premises for our own use and satisfaction.
Readers who envisage to carry out similar works inspired by the below method shall do this at their own risks and liability.

Carburetor (carburettor) in-car fixing | Carb fixing without removal

1- Remove the screws of the starter throttle and the throttle.

2- Unscrew the starter control assembly if you have one.

3- Remove the spring that closes the starter and extract the pin.

4- Leave the starter control assembly aside.

5- Remove the screws that hold the carburetor top half.

6- Unscrew and take out the fuel hose.

7- Gently pull up the carburetor top. Take care not to force on the floats or let their brass holder deform.

8- Empty the carburetor body from gasoline. A big syringe with an adequate tube will perfectly suit the job.

9- Or use a clean towel to absorb the gasoline or combine both.

10- Unscrew the first emulsion tube.

11- Put it back if clean or take it out for a cleaning with carburetor spray and a towel.

12- Watch out when you take out both emulsion tubes as they are different on each side. Do not forget which one is for which side of the carburetor.

13- Unscrew the acceleration membrane holder.

14- Take it out carefully not to drop and lose the spring

15- Repeat the same for the fuel pump membrane.

16- And again watch out the spring. A towel placed below will let you avoid losing the spring or a screw.

17- Be organized and place all components that you removed in a compartment tray.

18- Take advantage of a fully open carburetor to spray some cleaner. Spray inside the fuel pump.

19- Get the carburetor repair kit (spares) ready. You will need to replace the diaphragm pumps membranes, the carburetor gasket and the idle jet seal.