Question about 2003 BMW 325
First thing to check is the fuel pressure, there is a scrader valve under the black fuel rail cover to the right of the valve cover, just pop off the small circle and take off the 10mm screw. Hook up a a fuel pressure guage, then turn the key to the start postion and check the guage. there should be about 3.5 bar of pressure (50psi). If it doesnt build up it could be the fuel pump of a clogged fuel filter. If all this is good, then it may be a bad mass air flow sensor.
Posted on Mar 04, 2009
Sounds like anti-theft system
Posted on Mar 01, 2009
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Posted on Jan 02, 2017
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