Mechanics

MERCEDES FUEL LINE BLEED

1989 Mercedes Benz 260e • 6 cylinder 2WD Automatic • 178,000 miles

How do I bleed the air out of the fuel line after I drained the fuel tank and line completely to replace the fuel filter?
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Dirtbikerdude
January 8, 2011.




Start the engine, that will push the air out. The need to "bleed" the air out does not exist for fuel lines, you might be thinking of a hydraulic system that does not recirculate, fuel in a fuel injected engine is always moving and there is no need to bleed the air out, just start the car and the air will get worked out on it's own.

Dr. Hagerty
Jan 8, 2011.
Thank you very much for the information about bleeding the fuel line. I did just find that the fuel pressure regulator has a vent tube that normally connects into the breather diaphragm, but this one is broken. Will that prevent the pressure regulator from building the proper pressure, or is it connected to the breather so it will have clean air going to the fuel pressure regulator? If it is critical to proper pressure, can only the tube be replaced, or does the entire pressure regulator need to be replaced?
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Tiny
Dirtbikerdude
Jan 13, 2011.
To be on the safe side, you might want to replace the regulator.

Dr. Hagerty
Jan 13, 2011.
Thank you very much for your help.

Tiny
Dirtbikerdude
Jan 13, 2011.
UR welcome

Dr. Hagerty
Jan 13, 2011.

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