Checking and adjusting the performance of the accelerator pump (BMW 3 Series E30)

The amount of fuel injected by the accelerator pump must be checked in the case of increased fuel consumption and transient disturbances when gas is supplied, poor engine response and slow increase in speed.

Warm up the engine (the float chamber must be filled with fuel).

Remove the air filter (see section "Removal and installation the air filter").

Remove the carburetor.

Place a measuring cup with a funnel under the carburetor.

Slowly open the throttle lever 10 times, while the throttle control should move back completely.

Divide the fuel level reading on the scale on the measuring cup by 10 and compare the result with the specified value (see carburetor technical data table).



Adjust the fuel injection quantity with the adjusting nut -a-; "+" — increase; "-" - decrease.

Install the carburetor.

Install the air filter (see section "Removal and installation the air filter").

Check and, if necessary, adjust the idle speed and CO content.

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