- Before starting the engine, check the levels of all operating fluids (engine oil, coolant, etc.). If necessary, bring fluid levels to normal.
- Move the ignition switch to position «ON» (without starting the engine). The fuel lines will begin to build up pressure, check for fuel leaks at the connections.
- Start the engine. While increasing the engine speed, check again for fuel leaks at the connections.
- On the working engine, check for extraneous noise and vibration.
- Warm up the engine thoroughly and check for fuel, engine oil or other fluid leaks.
- Remove air from hydraulic systems.
- After the engine has cooled down, check the fluid levels again. If necessary, add fluid to the required level.