Warning! When checking the operation of the fuel injectors, never place your hands or any part of your body under the jet of fuel coming out of the injector. Fuel comes out of the injector under high pressure and can penetrate the skin into the body.
Removal and installation
1. Remove the upper section of the exhaust manifold.
2. Remove the camshaft and levers.
3. Disconnect the fuel return pipe from the overflow pipe.
4. Unscrew the bolt, release the bypass pipe (indicated by the arrow) from the top of the fuel injector and remove it from the cylinder head.
(Text copied from an internet website: www.OpelBook.ru)
5. Remove the O-rings from the bypass pipe and the top of the fuel injector.
6. Using an adapter and puller, remove the fuel injector from the top of the cylinder head and remove the sealing ring.
7. Install a new sealing ring (drawing on the left) on the bottom of the fuel injector and install the fuel injector into the cylinder head, aligning the dowel pin with the groove in the cylinder head (indicated by arrows in the figure on the right).
8. Install a new O-ring onto the top of the fuel injector.
9. Install a new sealing ring into the groove of the cross pipe.
10. Install the cross overflow pipe into the cylinder head and secure it with a new bolt. Tighten the bolt by hand first (drawing on the left), then using a wrench, turn it 360° (drawing on the right).
11. Connect the return pipe to the overflow pipe and install the upper section of the manifold.
12. Install the camshaft and levers.
13. Start the engine and check the fuel system for leaks.
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