1996 Pontiac Grand Am missing on cyl 1 and 3

1996 PONTIAC GRAND AM
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KHARTDUCK
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Engine Performance problem
1996 Pontiac Grand Am 4 cyl Front Wheel Drive Automatic
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The engine is missing on cyl 1 and 3. I have spark at the plugs and injectors are spraying fuel. I have changed the plugs, wires/boots and coil and ignition module. The only code I get is P0300. Dont know what to do next.
Jun 10, 2008 at 4:54 PM
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RASMATAZ
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P0300 Random Misfire could be a vacuum leak or contaminated fuel.

Misfires can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure.
Jun 10, 2008 at 5:12 PM
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