Sunday, May 12, 2013
How to Change the Fuel Pump on a BMW Series 5
1. Park the car in a well-lit, well-ventilated area. Disconnect the cable that goes to the negative battery terminal. Unscrew the gas cap to relieve pressure in the fuel tank. Lift the vehicle with a floor jack and lower it safely onto a pair of jack stands placed under the car.
2. Pull the rubber boots back that protect the electrical connections on the fuel pump. Loosen and remove the small nuts that hold the connections to the fuel pump. Clean the area where the fuel lines connect to the pump.
3. Pinch the lines on either side of the pump (one to the tank and one to the fuel injection system) with the locking pliers to prevent excess fuel from spilling out. If you like, you can also place a rag between the pliers and the fuel line, so the line does not become damaged.
4. Loosen the hose clamps that hold the fuel lines to the fuel pump with a screwdriver. Pull the lines off the fuel pump. Remove the bolts that hold the fuel pump clamp to the car. Remove the pump and the bracket.
5. Remove the yoke bracket that holds the pump to the main bracket. Set the old pump aside. Bolt the new pump to the bracket by placing the pump onto the bracket and then bolting the yoke bracket over the new pump. Bolt the bracket back onto the car.
6. Reconnect the fuel lines to the new fuel pump with new hose clamps. Reconnect the electrical connections. Slide the rubber boots back over the connections. Lower the BMW back to the ground.
