2002 Oldsmobile Alero 2.2L with engine code P0300

Question

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

Answer 1

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.

Answer 2

P0300 OLDSMOBILE - Cylinder Misfire Detected Random Cylinders
Read more: https://www.autocodes.com/p0300_oldsmobile.html