Where are the fuel pumps on a Mercedes Benz?
Where are the fuel pumps on a Mercedes Benz?
The W124 fuel pumps are located on the underside of the car; one pump is located behind the rear right side seat, the other is behind the rear cross-member to the right of the differential. You will need to safely lift and support your car.
What should my fuel pressure reading be on my Mercedes?
Set you digital multimeter to 20-volt setting and connect it to the two main (black and red) lines going into the fuel pump. Turn the key to position II and look at the reading. You should get around 11-13 volt reading. Note that when you turn on the ignition, the fuel pump gets voltage for about 5 seconds to prime the system.
Do you need a fuel tester for a Mercedes Benz?
For this test, you will need a fuel pressure gauge. The Actron CP7818 fuel tester works on most Mercedes-Benz and has the required Schrader valve required for MB cars. This test applies to Mercedes-Benz vehicles equipped with 4-cylinder, V6, V8 and V12 gasoline engines such as M112, M113, M119, M104 M272 and M273.
How to stop the flow of gas in a Mercedes Benz?
Place a large hose clamping tool on the input line (red arrow) to stop the flow of gas. If you do not have the proper tool you can try wrapping vice grips in a rag to pinch the line. Do NOT put the metal teeth against the rubber line.
The W124 fuel pumps are located on the underside of the car; one pump is located behind the rear right side seat, the other is behind the rear cross-member to the right of the differential. You will need to safely lift and support your car.
Set you digital multimeter to 20-volt setting and connect it to the two main (black and red) lines going into the fuel pump. Turn the key to position II and look at the reading. You should get around 11-13 volt reading. Note that when you turn on the ignition, the fuel pump gets voltage for about 5 seconds to prime the system.
For this test, you will need a fuel pressure gauge. The Actron CP7818 fuel tester works on most Mercedes-Benz and has the required Schrader valve required for MB cars. This test applies to Mercedes-Benz vehicles equipped with 4-cylinder, V6, V8 and V12 gasoline engines such as M112, M113, M119, M104 M272 and M273.
Place a large hose clamping tool on the input line (red arrow) to stop the flow of gas. If you do not have the proper tool you can try wrapping vice grips in a rag to pinch the line. Do NOT put the metal teeth against the rubber line.
