Warning: When starting the engine for the first time after a major overhaul, have a fire extinguisher ready.
1. After installing the engine in the vehicle, check the oil and coolant levels.
2. With the spark plugs removed and the ignition and fuel systems disconnected (see subsection 3) turn the engine crankshaft with the starter until the emergency oil pressure indicator turns off.
3. Install the spark plugs and connect the wires. Connect the ignition system and fuel system.
4. Start the engine. It should be noted that it should start without difficulty, but it may take longer than usual due to the fact that the fuel system is not full.
5. After starting, warm up the engine at idle speed to normal operating temperature. While warming up, check for fuel, oil and coolant leaks. Do not exceed fast idle speed until the hydraulic valve lifter pump has risen and returned to idle (as a rule, this takes at least 5 minutes).
6. After warming up the engine, check for any engine oil or coolant leaks. After installing a new camshaft and valve lifters, the engine must be run at fast idle speed for at least 15 minutes after the hydraulic lifter pump has risen and returned to idle to allow the cams and lifters to run in. In this case, it is necessary to monitor the temperature indicator readings to prevent the engine from overheating.
7. Stop the engine and check the engine oil and coolant levels again.
8. Drive the car off-road, increasing speed from 50 to 80 km/h and then decreasing speed back to 50 km/h with the throttle closed. Repeating this procedure 10-12 times will break in the piston rings and cylinder walls. Check again for coolant and engine oil leaks.
9. After replacing pistons, rings or crankshaft bearings, the engine should be treated as new. A running-in period should be carried out during the first 800 km. Do not open the throttle fully during this period and do not overload the engine at low speeds in any gear. During this period, as a rule, engine oil is not consumed.
10. Change the engine oil and filter after driving approximately 800-1000 km.
11. Continue normal operation of the vehicle, giving the engine a load in normal modes.
12. After driving 3200 km, change the oil and filter. From this point on, the engine is considered to be fully run-in.