Fig. 2.270. Fuel injectors
Removal
Release any residual pressure in the fuel line to prevent fuel from escaping.
Caution! Cover the fuel line nipple with a rag to prevent fuel from escaping due to residual pressure in the fuel line.
Remove the fuel rail together with the injectors.
Caution: When removing the fuel rail, take precautions to prevent the injectors from falling out.
Caution! When removing the injectors, take measures to prevent fuel leakage.
Checking the technical condition
Fig. 2.271. Checking the resistance of the injector winding
Check the resistance of the injector winding by connecting an ohmmeter to its terminals (Fig. 2.271).
Injector winding resistance: 15.9±0.35 Ohm at 20°C.
If the resistance does not match the norm, replace the injector.
Installation
Fig. 2.272. Fuel injector
Install a new sealing and heat-protective ring on the injector (Fig. 2.272).
Apply solvent, spindle oil or gasoline to the O-ring.
Fig. 2.273. Installing the injector
Install the injector into the fuel rail, turning the injector left and right (Fig. 2.273).
Make sure the nozzle rotates easily.
Note: If the injector is difficult to rotate, this indicates that the sealing ring may be warped. Remove the injector, insert it into the fuel rail and check again for ease of rotation.