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1980 Mercedes Benz 300sd where is the fuel pump located

Tiny
ISLGU158
  • MEMBER
  • 1980 MERCEDES BENZ 300SD
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 280,000 MILES
Where physically on the vehicle is the fuel pump, have an old girl whos firing but wont drink have used the plunger. Limited mechanical knowledge but can usually at least find source of problem
Sunday, October 24th, 2010 AT 2:09 PM

1 Reply

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Hello and thanks for donating

Do not confuse the electric fuel pump with the injection pump.

All Mercedes-Benz fuel injected engines are equipped with electric fuel pumps. The electric fuel pump is located underneath the rear floor panel. The fuel return line was also eliminated and a check ball installed in its place.

Two types of fuel pumps have been used. One, the large pump, has been replaced with a new small design which has a bypass system to prevent vapor lock.
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Sunday, October 24th, 2010 AT 6:12 PM

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