I took the vehicle to get the oil changed and engine serviced. The service man pulled the plugs and discovered oil on them and would not service the engine or change the oil. He said I needed to take the car to a certified mechanic. What would cause the engine to oil the spark plugs? It seemed to be running ok, but the service man said it wasn't.
Sounds like the piston rings are worn out.
Overhaul motor and cylinder head/s.
Oilrings have blowby.
In the interim, change oil to formulation for old engines.
Have mechanic run compression test. might need rings or valve job
SOURCE: 2003 Buick Regal Service Engine Soon light.
The error that I'm showing for error code P1133 is
P1133 Heated Oxygen Sensor (HO2S) insufficient switching bank 1 sensor 1(Rear Bank). I would suggest having both of your Oxygen Sensors replaced if you haven't already had that done. Hope this helps. Thanks for an honest rating and for using FixYa.
SOURCE: buick regal 92 3.8L Horrible fuel mileage
Sounds like you might have an oxygen sensor problem. Your catalytic converter(s) maybe defective or dirty. That in turn can dirty up the oxygen sensor. A defective oxygen sensor will send faulty info to the computer, interpreting the fumes as cold (even when the engine warms up). That causes the computer to adjust the fuel mixture to very rich, giving you poor gas mileage and the fuel smell. Hope it helps.
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