Vauxhall Workshop Service and Repair Manuals > Astra J > Engine | Engine mechanics - 1.6L (LDE, LLU), 1.8L (2H0) | Other Information

Engine Noise Under Load

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