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Makes 🢒 Buick 🢒 2009 🢒 Regal 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Engine Noise Under Load

Engine Noise Under Load LDK

Cause

Correction

Low oil pressure
  1. Perform an oil pressure test. Refer to Oil Pressure Diagnosis and Testing.
  2. Repair or replace, as required.

Detonation or spark knock

Verify the correct operation of the ignition. Refer to Symptoms - Engine Controls.

Loose torque converter bolts
  1. Inspect the torque converter bolts and flywheel.
  2. Repair, as required.

Cracked flywheel - automatic transmission
  1. Inspect the flywheel bolts and flywheel.
  2. Repair, as required.

Excessive connecting rod bearing clearance

Inspect the following components and repair, as required:

    • The connecting rod bearings
    • The connecting rods
    • The crankshaft

Excessive crankshaft bearing clearance

Inspect the following components and repair, as required:

    • The crankshaft bearings
    • The crankshaft journals
    • The cylinder block crankshaft bearing bore

Engine Noise Under Load LTD

Cause

Correction

Low oil pressure
    • Perform an oil pressure test. Refer to Oil Pressure Diagnosis and Testing.
    • Repair or replace as required.

Detonation or spark knock

Verify the correct operation of the ignition. Refer to Symptoms - Engine Controls.

Loose torque converter bolts
    • Inspect the torque converter bolts and flywheel.
    • Repair as required.

Cracked flywheel, automatic transmission
    • Inspect the flywheel bolts and flywheel.
    • Repair as required.

Excessive connecting rod bearing clearance

Inspect the following components, and repair as required:

    • The connecting rod bearings
    • The connecting rods
    • The crankshaft

Excessive crankshaft bearing clearance

Inspect the following components, and repair as required:

    • The crankshaft bearings
    • The crankshaft journals
    • The cylinder block crankshaft bearing bore