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i have a 2002 old alero has a code p0300 I changed plugs power pack cleaned injectors still misfires no power

Vehicle: 2002 Oldsmobile Alero 2.2L

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Hi there,

Check for intake manifold leaks, also check your catalytic converter and engine timing. These can cause this code as well as take a look at the fuel pressure. Low fuel pressure can cause this also.
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P0300 OLDSMOBILE - Cylinder Misfire Detected Random Cylinders
Read more: https://www.autocodes.com/p0300_oldsmobile.html

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