Cleaning and checking the technical condition of the carburetor (VAZ-21011)

Contents: Fuel filter ↓ Float mechanism ↓ Carburetor cover ↓ Starting device ↓ Jets and emulsion tubes ↓ Carburetor body ↓ Accelerator pump ↓ Secondary chamber throttle valve…↓ Throttle body and its parts ↓

Fuel filter

Wash the filter in gasoline and blow it with compressed air. Check the condition of the filter and the sealing conical belt of the filter plug. If the filter or plug is damaged, replace them with new ones.

Float mechanism

Wash the parts in acetone or gasoline. The float should not have any damage or distortion of shape. The float weight should be 11–13 g. The sealing surfaces of the needle valve and its seat should not be damaged in a way that would compromise the valve's tightness. The valve should move freely in its seat, and its ball should move freely and not hang. Replace faulty parts with new ones.

Carburetor cover

1. Clean the cover and all holes and channels from dirt and oil. Wash the cover in gasoline or acetone and blow it with compressed air.

(The information is posted on the portal VAZbook)

2. Inspect the sealing surfaces of the cover. If damage is found, replace the cover with a new one.

Starting device

Clean all parts of the starting device, wash with gasoline and blow with compressed air. Inspect the parts, replace damaged ones with new ones.

Jets and emulsion tubes

Clean the jets and emulsion tubes from dirt and resinous deposits. Wash them with acetone or gasoline and blow them with compressed air.

Warning! Do not clean the jets with metal tools or wire, or wipe the jets or other parts of the carburetor with cotton wool, cloth or rags, as the lint may clog the fuel-emulsion tract. In case of severe clogging, you can clean the jets with a soft wood needle soaked in acetone.

Carburetor body

Clean the housing from dirt and oil. Wash the housing and its channels with gasoline or acetone and blow with compressed air. If necessary, clean the channels and emulsion wells with special reamers. Inspect the sealing surfaces of the housing; if they are damaged, replace the housing with a new one.

Accelerator pump

1. Clean the pump parts, rinse them and blow them with compressed air. Check the ease of movement of the ball in the valve screw 9 (see Fig. Carburetor body parts) and the condition of the sealing surfaces and gaskets.

2. Check the ease of movement of the moving parts of the pump (lever, roller, diaphragm parts). No jamming is allowed. The diaphragm must be intact, without deformations. Replace damaged parts with new ones.