Power Solutions, Inc.

P0300

WarningCooling

What This Code Means

Engine misfire; Abnormal internal engine noises; Excessive oil consumption; Excessive coolant consumption; Drivability concerns; Emissions concerns; Malfunctioning Indicator Lamp (MIL) concerns

Possible Causes

  • •Faulty engine camshaft
  • •Worn or damaged bearings
  • •Bent valve pushrod
  • •Crossed fuel injector wire
  • •Faulty fuel injector
  • •Intake manifold vacuum leak
  • •Loose or improperly installed engine flywheel
  • •Loose or improperly installed crankshaft balancer
  • •Worn, damaged or misaligned accessory drive system components

Suggested Actions

  1. 1Perform DTC P0300 before proceeding with Base Engine Misfire Diagnosis
  2. 2Perform a visual inspection for a loose or improperly installed engine flywheel or crankshaft balancer
  3. 3Perform a visual inspection for worn, damaged or misaligned accessory drive system components
  4. 4Listen to the engine for abnormal internal engine noises
  5. 5Inspect the engine for acceptable oil pressure
  6. 6Verify if the engine has excessive oil consumption
  7. 7Verify if the engine has excessive coolant consumption
  8. 8Perform a compression test on the engine
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