Ali Hosman Rivero , DTC P0300: RANDOM MISFIRE DETECTED
Possible causes are: Camshaft Position (CMP) sensor malfunction.
Crankshaft Postion (CKP) sensor malfunction.
EGR system malfunction.
Excessive air leak in intake-air system between Mass Airflow (MAF) sensor and dynamic chamber.
Fuel line leak.
Fuel pressure regulator malfunction.
Fuel pump malfunction.
Ignition coil malfunction.
MAF sensor malfunction.
PCV valve malfunction.
Plugged or restricted fuel filter.
Plugged or restricted fuel line.
Poor connection or wiring problems.
Poor fuel quality.
Purge solenoid valve malfunction.
Secondary ignition system malfunction.
Vacuum hoses damaged or improperly connected.
Most common cause is that the coil packs are starting to go, they only mis-fire the engine cylinders sometimes.
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