What is the common rail fuel injection system?
A fuel supply system in which two or more high-pressure pumps supply a common manifold or rail. Fuel is delivered from the common rail through a separate injection control unit for each engine cylinder to the standard fuel injection valves. …
How does a Mercedes Benz diesel fuel injector work?
The Mercedes Benz diesel injector works the same as gasoline injectors since it is using direct fuel injection. It may vary because it uses either a common rail or unit injector direct injection systems. In the common rail a high-pressure fuel rail to feed individual solenoid valves instead of using low-pressure fuel pump unit injectors.
How much elongation does a Mercedes injector need?
Elongation was approx. 0.30mm for each increment of 90 degrees of tightening rotation (after the 62 in/lb initial torque). TRIAL 3-A fresh hold down bolt tightened to failure. The bolt tolerated several additional 90 degree sequences PAST the initial 62 in/lbs and 2×90 degrees.
What to use to clean Mercedes diesel injector seat?
Use a torch to inspect the injector seat in the cylinder head, it will likely be blackened and carbonised, this needs to be cleaned off and in severe cases re-cut to present a perfect sealing surface. I have in the past had great success using a wooden dowel, rather like the ones used on a valve grinding hand tool.
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.
The Mercedes Benz diesel injector works the same as gasoline injectors since it is using direct fuel injection. It may vary because it uses either a common rail or unit injector direct injection systems. In the common rail a high-pressure fuel rail to feed individual solenoid valves instead of using low-pressure fuel pump unit injectors.
How to change nozzles on Mercedes diesel engine?
Before changing the nozzles, a fuel system purge should be done. Use special diesel engine fuel cleaner by disconnecting the fuel line to the tank and running the engine straight from a little container with the fuel return line pouring it in to this container. Run the engine until the diesel cleaner is used up.
What kind of injectors does a Mercedes OM617 use?
I got my OM617 engine down to using only 6.5L/100km after replacing the nozzles to a new Monark type and overhauling the injectors. That’s absolutely incredible for a 3.0L diesel engine with technology dating back from the 70s.
Elongation was approx. 0.30mm for each increment of 90 degrees of tightening rotation (after the 62 in/lb initial torque). TRIAL 3-A fresh hold down bolt tightened to failure. The bolt tolerated several additional 90 degree sequences PAST the initial 62 in/lbs and 2×90 degrees.