BMW 1999-2005 M3 Service Manual page 336

Fuel Injection
5 of 6
http://ebahn.bentleypublishers.com/BMW/3/E46/Repair%20Manuals/1...
The fuel system retains fuel pressure in
the system when the engine is turned
off. To prevent fuel from spraying on a
hot engine, system fuel pressure
should be relieved before
disconnecting fuel lines. One method
is to tightly wrap a shop towel around a
fuel line fitting and loosen or
disconnect the fitting.
Cleanliness is essential when working
with fuel circuit components.
Thoroughly clean the unions before
disconnecting fuel lines.
WARNING!
Gasoline is highly flammable
and its vapors are explosive. Do
not smoke or work on a car near
heaters or other fire hazards
when diagnosing and repairing
fuel system problems. Have a
fire extinguisher available in
case of an emergency.
When working on an open fuel
system, wear suitable hand
protection. Prolonged contact
with fuel can cause illnesses
and skin disorders.
Remove interior ventilation microfilter
housing.
Remove upper cover and
microfilter.
Open wiring harness loom (A) and
move wiring out of way.
Unfasten screws (B) and remove
lower microfilter housing.
2/25/2009 9:55 PM