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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 152 (Engine Mechanical - 4.8L, 5.3L, 6.0L And 6.2L (1 Of 5)) >> Diagnostic Information and Procedures >> Engine Noise on Start-Up, but Only Lasting a Few Seconds

Engine Noise on Start-Up, but Only Lasting a Few Seconds

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Engine Noise on Start-Up, but Only Lasting a Few Seconds

Cause Correction
Incorrect oil filter without anti-drainback feature Install the correct oil filter.
Incorrect oil viscosity
  1. Drain the oil.
  2. Install the correct viscosity oil.
High valve lifter leak down rate Replace the lifters, as required.
Worn crankshaft thrust bearing
  1. Inspect the crankshaft end play.
  2. Inspect the thrust bearing and crankshaft.
  3. Repair or replace, as required.
Damaged or faulty oil filter bypass valve
The bypass valve is now internal to the oil filter.
  1. Inspect the oil filter bypass valve for proper operation.
  2. Repair or replace, as required.
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