BMW Cars 1999-06

Removal & Installation

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On filters that are located near the fuel tank, it is necessary to clamp the fuel lines closed before disconnecting them, or fuel will run out continuously.

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Relive the fuel system pressure and disconnect the negative battery cable.
  4.  
  5. Clamp the fuel lines closed if the filter is mounted low, near the fuel tank or underneath the vehicle. Then, loosen the clamps and disconnect the inlet and outlet hoses. Remove the hose clamps or slide them back, well off the connections to make it easier to remove the hoses, if necessary.
  6.  
  7. The filters are usually attached to a bracket on the frame, floor pan or wheel well. Loosen the bracket and remove the filter. Note the direction of flow for reinstallation or replacement of the filter.
  8.  

To install:

  1. Position the new fuel filter and install the fuel lines onto the correct fuel filter fittings. Tighten the fuel line clamps until tight, but not to the point where the fuel lines become excessively pinched or damaged, then tighten the mounting bracket until snug.
  2.  
  3. Connect negative battery cable. Cycle the ignitionONOFF
  4.  
  5. Inspect the fuel filter and fuel lines for any fuel leaks.
  6.  

On filters that are located near the fuel tank, it is necessary to clamp the fuel lines closed before disconnecting them, or fuel will run out continuously.

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Remove or disconnect the following:

    Fuel system pressure
     
    Negative battery cable
     

  4.  
  5. Clamp the fuel lines closed if the filter is mounted low, near the fuel tank or underneath the vehicle. Then, loosen the clamps and disconnect the inlet and outlet hoses. Remove the hose clamps or slide them back, well off the connections to make it easier to remove the hoses, if necessary.
  6.  
  7. The filters are usually attached to a bracket on the frame, floor pan or wheel well. Loosen the bracket and remove the filter. Note the direction of flow for reinstallation or replacement of the filter.
  8.  

To install:

  1. Position the new fuel filter and install the fuel lines onto the correct fuel filter fittings. Tighten the fuel line clamps until tight, but not to the point where the fuel lines become excessively pinched or damaged, then tighten the mounting bracket until snug.
  2.  
  3. Connect negative battery cable. Cycle the ignition ON and OFF several times to build fuel pressure.
  4.  
  5. Inspect the fuel filter and fuel lines for any fuel leaks.
  6.  

On filters that are located near the fuel tank, it is necessary to clamp the fuel lines closed before disconnecting them, or fuel will run out continuously.

  1. Disconnect the negative battery cable. Relieve fuel system pressure. Clamp the lines closed if the filter is mounted low, near the fuel tank. Then, loosen the clamps and disconnect the inlet and outlet hoses. Remove the hose clamps or slide them back, well off the connections to make it easier to pull off the hoses, if necessary.
  2.  
  3. The filters will usually be attached to a frame, floor pan or wheel well by a bracket. Loosen the bracket and remove the filter. Note the direction of flow and then remove the filter.
  4.  

To install:

  1. Situate the new fuel filter, while observing the direction of flow markings on the filter, into position on the frame, floor pan or wheel well (depending on the particular model). Install the mounting bracket until snug.
  2.  
  3. Install the fuel lines onto the correct fuel filter fittings. Tighten the fuel line clamps until tight, but not to the point where the fuel lines become excessively pinched or damaged.
  4.  
  5. Connect the negative battery cable and cycle the ignition ON and OFF several times to build fuel pressure.
  6.  
  7. Inspect the fuel filter and fuel lines for any fuel leaks.
  8.  

On filters that are located near the fuel tank, it is necessary to clamp the fuel lines closed before disconnecting them, or fuel will run out continuously.

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Relive the fuel system pressure and disconnect the negative battery cable.
  4.  
  5. Clamp the fuel lines closed if the filter is mounted low, near the fuel tank or underneath the vehicle. Then, loosen the clamps and disconnect the inlet and outlet hoses. Remove the hose clamps or slide them back, well off the connections to make it easier to remove the hoses, if necessary.
  6.  
  7. The filters are usually attached to a bracket on the frame, floor pan or wheel well. Loosen the bracket and remove the filter. Note the direction of flow for reinstallation or replacement of the filter.
  8.  

To install:

  1. Position the new fuel filter and install the fuel lines onto the correct fuel filter fittings. Tighten the fuel line clamps until tight, but not to the point where the fuel lines become excessively pinched or damaged, then tighten the mounting bracket until snug.
  2.  
  3. Connect negative battery cable. Cycle the ignition ON and OFF several times to build fuel pressure.
  4.  
  5. Inspect the fuel filter and fuel lines for any fuel leaks.
  6.  

Gasoline Engines





Click image to see an enlarged view

Fig. The fuel filter is mounted near the left engine mount on early 6-cylinder E36 models-325i model shown


CAUTION
Observe all applicable safety precautions when working around fuel. Whenever servicing the fuel system, always work in a well ventilated area. Do not allow fuel spray or vapors to come in contact with a spark or open flame. Keep a dry chemical fire extinguisher near the work area. Always keep fuel in a container specifically designed for fuel storage; also, always properly seal fuel containers to avoid the possibility of fire or explosion.

The fuel filter is located as follows:

E30 models:



Underneath the vehicle near the fuel pump, close to the rear axle
 

E36 4-cylinder models:



M42B18 engines: Left side front frame rail, near the lower control arm bushing
 
M44B19 engines: Underneath the vehicle near the transmission crossmember mounting bolts
 

E36 6-cylinder models:



M50B25 and S50B30 engines: In the engine compartment near the left engine mount
 
M52 and S52 engines: Underneath the vehicle near the transmission crossmember mounting bolts
 


CAUTION
Because the fuel filter is located lower than the fuel tank, a set of fuel hose clamps must be used to prevent fuel leakage. Use extreme care when performing this procedure.

  1. Relieve the fuel system pressure as outlined in Section 5.
  2.  
  3. If equipped, remove the protective dust cover.
  4.  
  5. Install the fuel line block off clamps on both the inlet and outlet lines to the fuel filter to prevent excessive fuel leakage once the fuel lines are loosened.
  6.  
  7. Place a suitable container under the filter to catch the fuel as it drains from the filter.
  8.  
  9. Loosen the filter mount clamp, then loosen and remove the inlet hose first, then the outlet hose.
  10.  
  11. Remove the filter from the vehicle.
  12.  

To install:

  1. Note the direction of the fuel flow of the new filter and install the filter securely.
  2.  
  3. Make sure to attach the fuel lines to the correct ends of the filter and tighten the hose clamps securely.
  4.  
  5. The remainder of the installation is in reverse order of removal, noting to inspect for leakage upon completion.
  6.  

 
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