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What should I do if my Mercedes injector is not working?

What should I do if my Mercedes injector is not working?

Once identified the work can begin – Run the engine until nice and warm then turn it off and remove the keys. Remove the turbo supply hose to the inlet manifold and split the composite intake manifold by removing the pins that secure it to the lower section.

What should the torque be on a Mercedes injector?

While the actual MB recommended spec for tightening the hold down clamp bolt is 7Nm plus 90 degrees, plus 90 degrees – 7Nm plus 90 degrees will provide a safer torque to yield on a new bolt in an old head.

What to do if you have a diesel injector problem?

Start the engine and watch for the darkening/spotting of the brown paper with diesel spray, this will indicate quite clearly where the problem lies. Once identified the work can begin – Run the engine until nice and warm then turn it off and remove the keys.

How do you turn on a fuel injector?

Put the straw back into the opening at the end of the fuel injector, and wrap the seam with electrical tape. Next, attach alligator clips to the leads on a 12 volt battery. Attach the other end of the leads to the ports on the side of the fuel injector to turn the injector on automatically.

How do you remove a CDI injector from a Mercedes?

Next, clean all of the carbon from around the base of the injector and vacuum it all up. Undo the injector bolt (caution – they snap easy) and dig out the retaining clamp and vacuum any loose carbon. Some injectors may be loose enough to remove but others not. If stuck, you may need to use a special tool to remove it.

While the actual MB recommended spec for tightening the hold down clamp bolt is 7Nm plus 90 degrees, plus 90 degrees – 7Nm plus 90 degrees will provide a safer torque to yield on a new bolt in an old head.

How long does it take to get an injector out of a Mercedes?

In some cases the injector lifts out instantly, in others it can take hours of wiggling and fiddling, don’t be tempted to use hammers or heavy tools to do this job as commonly expensive damage results. The image below shows damage to a rocker/cam cover caused by levering against it to extract a stubborn injector.

Start the engine and watch for the darkening/spotting of the brown paper with diesel spray, this will indicate quite clearly where the problem lies. Once identified the work can begin – Run the engine until nice and warm then turn it off and remove the keys.

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Ruth Doyle