Fuel Sending Unit on 97 E320
I need to clean and examine the sending unit in the fuel tank. Gas gauge is very erratic and have been told that the sending unit may have to be cleaned or replaced. I am not very familiar with the procedure on how to remove the unit from the tank. As per your instructions, I removed the carpet and found a large white 3" cap near the top of the tank. Where would you place the large socket or wrench to remove the cap or must the cap be remove first to access the nut. Please describe in detail. Thank-you for the info so far.