- Before removing, thoroughly clean the connection points and their surroundings.
- Place removed parts in a clean place and cover. Use film and paper. Do not use rags with nap.
- Open parts must be carefully covered or sealed if repairs are not made immediately.
- remove spare parts from packaging immediately before installation. Install only clean parts.
- Do not install parts that were not in the packaging (for example, taken from a toolbox).
- If possible, do not work with compressed air when the fuel system is open. If possible, do not move the vehicle.
Fuel supply faults
If there are any problems with the fuel supply, check the fuel system in the following sequence:
- Check if there is fuel in the fuel tank.
- Disconnect the fuel hose from the carburetor that goes to the fuel pump and place a suitable container underneath. Turn on the starter briefly. Fuel should flow out of the hose in pulses.
Warning: Fire hazard! Do not make open fire!
- Check the fuel pump feed pressure. Specified value: 0.2-0.3 bar at 4000 rpm.
- If fuel is not supplied, disconnect the supply hose from the fuel pump.
- If fuel is leaking from there, check the pump for leaks or the mesh for clogging.
Note: On the latest pumps, the cover does not unscrew, so it is impossible to clean the filter mesh.
- If fuel does not flow out, disconnect the hose going to the fuel tank and blow it out.
- Check the patency and clean the fuel tank ventilation system.
(The original text is available on the website: BMWman.ru)