Question about Cadillac Brougham
SOUND LIKE VACUUM LEAK AT INTAKE MANIFOLD LOOK FOR STUCK OPEN PCV VALVE OR LEAKING EGR VALVE GASKET.CHECK MAP SENSOR VACUUM HOSE MAKE SURE ITS CONNECTED AND GETTING VACUUM OR CHECK FOR A DISCONNECTED ELECTRICAL CONNECTOR AT MAP SENSOR.IF ALL LOOK GOOD CHECK FUEL PRESSURE SHOULD BE 40 - 50 PSI FOR 98 TO 2001 CADILLACS WITH 4.6 ENGINES CADILLACS 92 TO 97 MODELS WITH ENGINES 4.9 TO 3.8 FUEL PRESSURE 41 - 47 PSI. THATS YOUR FUEL PRESSURES WITH NEW FUEL FILTERS.IF FUEL PRESSURE WAY LOW FUEL FUEL PUMP WEAK.IF FUEL PRESSURE GOES HIGHER THAN NORMAL OR SEE GAS IN FUEL PRESSURE REGULATOR VACUUM LINE.FUEL PRESSURE REGULATOR IS FAULTY.WEAK IGNITION COIL OR COILS BAD PLUGS WORN DISTRIBUTOR CAP AND ROTOR WILL CAUSE SPUTTERING.
Posted on Oct 15, 2010
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Posted on Jan 02, 2017
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