Where is the fuel level sender on a Mercedes Benz?
Shown here is the fuel level sender mounted in the fuel tank (green arrow). Remove the two electrical connections going to the fuel level sender (green arrows). The factory procedure for removing the sender calls for the use of a special pin wrench that fits into the two holes on the sender (green arrows).
Where is the oil leak on a 272 / 273 Mercedes?
272/273 Engines: The most likely rear engine leaks include the oil separator and the cam plugs ( 30mm and 65mm ). The oil separator is held onto the back of bank 1 (passenger side) with either 4 torx bolts or 4 external torx bolts. Remove the oil separator, replace, and clean the oil residue from the engine.
When do you do the fuel sender test?
The fuel sender test should be conducted when the tank is lower than HALF, to prevent fuel splashing. Start by making sure the plug is clean, dry, and free of corrosion. Make sure the pins are straight and that the connector is fully seated. Remove the fuel pump module so you can manipulate the float arm.
How does the low fuel warning light work?
The sender works by measuring the resistance of the electrical circuit depending on the location of the float. There is also a contact at the bottom of the unit that the sender closes to activate the low fuel warning light. Over time, corrosion can build up on the sender’s electrical components.
What should I do if my fuel sender is not working?
Allow the oil a few hours to work. A tank fitted through the boot floor may have a sealing gasket between the tank and the floor. If it does not have a gasket, seal the joint with mastic. Bolt in the new tank, then reattach all the connections. Refill with petrol, check for leaks and see that the fuel gauge registers.
Shown here is the fuel level sender mounted in the fuel tank (green arrow). Remove the two electrical connections going to the fuel level sender (green arrows). The factory procedure for removing the sender calls for the use of a special pin wrench that fits into the two holes on the sender (green arrows).
Why does the fuel gauge read empty when there is fuel in the tank?
If the fuel gauge reads empty when you know there is fuel in the tank, the cause may be a faulty sender unit the electrical device that measures the level. Or it may be a faulty gauge or a break in the wiring between the gauge and sender.
How is the fuel gauge connected to the sender?
Most senders are circular. Generally the fuel pipe (or pipes, in a circulating system) is connected to it. There is an electrical connection to the fuel gauge, and sometimes a second one for a low-fuel warning light.