VZ 6Speed, Acceleration Lack

[RachealAlex]

My VZ has started to lack power in acceleration, I’ve plugged my car into my OBD reader & 2 codes have come up P0303 & P0301 I’ve changed all coils and spark plugs but it doesn’t seem to have changed anything...

Any clue as to what else it could possibly?

 

[vr304]

How’s your air filter? Tried cleaning the maf? (Airflow sensor) injectors need cleaning?

 

[Trevor loves holden.]

p0303 misfire on cyl 3 and p0301 is misfire in cyl 1. If its not your plugs or coils then that leaves injector or ECU or wiring. Fuel pressure or crankshaft sensor or vacuum leak or timing chain.