Mechanics

CHECK ENGINE LIGHT

1999 Subaru Legacy

Engine Performance problem
1999 Subaru Legacy 4 cyl All Wheel Drive Automatic 170500 miles

The check engine light keeps coming on. (Legacy Outback) The code is PO 303 & 304. The mechanic replaced the coil pack. The light came back on. The spark plugs were replaaced. The light came back on. The mechanic thinks a valve adjustment may be the next thing to do. He says the car runs very smooth and according to the ck engine code it should be running on 2 or 3 cylinders. And running rough. Anyone have any help on this strange problem? Should I continue with this exploratory work and get the valves adjusted?
Avatar
Bob Wilkinson
June 8, 2009.



Check out the related content below while we wait for the question to be answered by a professional mechanic.