I want to take my E30 M42 injectors out to clean them. I found a post with some instructions, but these are from an E36 M42 which I know is different.
Is everything here looking in the right order?
1. Remove the fuel pump fuse from the fuse box.
2. Start the engine, and wait for it to stall. Switch off the ignition.
3. Remove the fuel filler cap (the system is now depressurized).
4. Disconnect the battery negative cable before working on any part of the fuel system.
6. Install the fuel pump fuse, then switch on the ignition and wait for a few seconds for the fuel pump to run, building up fuel pressure. Switch off the ignition unless the engine is to be started.
(This is confusing to me, why would I prime the fuel system after de-pressurising it? - Unless the order of where I'm quoting this from is messed up).
3. Remove the upper section of the intake manifold.
4. Pull up the wiring ducting to release the wiring plugs from the fuel injectors.
5. Loosen the hose clamps and disconnect the fuel feed and return hoses from the fuel rail. Be prepared for fuel spillage and take adequate fire precautions. Plug the open ends of the pipes and hoses to prevent dirt entry and further fuel spillage.
6. Disconnect the vacuum hose from the fuel pressure regulator.
7. Unscrew the two bolts securing the fuel rail to the intake manifold.
8. Carefully pull the fuel rail upwards to release the fuel injectors from the cylinder head, then withdraw the complete fuel rail/fuel injector assembly.
9. To remove a fuel injector from the fuel rail, proceed as follows.
A)Pry off the metal securing clip, using a screwdriver. B)Pull the fuel injector from the fuel rail.
Installation should be ok, put it back together like you found it and pressurise the system using step six.
Thanks lads
Is everything here looking in the right order?
1. Remove the fuel pump fuse from the fuse box.
2. Start the engine, and wait for it to stall. Switch off the ignition.
3. Remove the fuel filler cap (the system is now depressurized).
4. Disconnect the battery negative cable before working on any part of the fuel system.
6. Install the fuel pump fuse, then switch on the ignition and wait for a few seconds for the fuel pump to run, building up fuel pressure. Switch off the ignition unless the engine is to be started.
(This is confusing to me, why would I prime the fuel system after de-pressurising it? - Unless the order of where I'm quoting this from is messed up).
3. Remove the upper section of the intake manifold.
4. Pull up the wiring ducting to release the wiring plugs from the fuel injectors.
5. Loosen the hose clamps and disconnect the fuel feed and return hoses from the fuel rail. Be prepared for fuel spillage and take adequate fire precautions. Plug the open ends of the pipes and hoses to prevent dirt entry and further fuel spillage.
6. Disconnect the vacuum hose from the fuel pressure regulator.
7. Unscrew the two bolts securing the fuel rail to the intake manifold.
8. Carefully pull the fuel rail upwards to release the fuel injectors from the cylinder head, then withdraw the complete fuel rail/fuel injector assembly.
9. To remove a fuel injector from the fuel rail, proceed as follows.
A)Pry off the metal securing clip, using a screwdriver. B)Pull the fuel injector from the fuel rail.
Installation should be ok, put it back together like you found it and pressurise the system using step six.
Thanks lads
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