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1993 BMW 3 Series - Running Rich

The car is very fuely a lot of black soot at exhaust pipe outlet runs very rough on idle and dies when taking off once going it fly,s up high end, it is using a lot of fuel than normal,have replaced plugs,air cleaner filter,and fuel hose,s

Locate the fuel pressure regulator on the fuel rail.,1993,318i,1.8l+l4,1011261,fuel+&+air,fuel+injection+pressure+regulator,6124

Remove the vacuum hose from the regulator.

If gas leaks out of this connection, the diaphragm in the regulator has ruptured, and gas is being sucked into the engine.


Are you getting a “too-rich” engine diagnostic code?