68. Engine Set-Up and Testing

After assembly, test engine before installing it in the vehicle if possible. If a test stand is not available, use the following procedure.
1. Fill crankcase with oil.
2. If a new camshaft and lifters have been installed, add engine oil supplement GM P/N 1052367 or equivalent to engine oil.
3. Fill cooling system with coolant.
4. Crank engine several times and listen for unusual noises or any other evidence of mechanical problems.
5. Start engine.
6. Listen for any abnormal engine sounds.
7. Run engine at 1000 rpm until engine is at operating temperature.
8. After engine is at operating temperature, shut the engine Off.
9. Inspect engine carefully for oil or coolant leaks.