3. Refill with engine oil filter. 1) Clean and install the oil drain plug with a new gasket. At this time, necessarily screen the spark plug hole with a rag. Because hot coolant, oil, fuel, and other foreign material, being penetrated in the cylinder through cracks can come into the spark hole during checking compressed pressure. When cranking the engine to test compressed pressure, necessarily open the throttle valve be- fore cranking. 2)Fill with fresh engine oil. 3) Install the oil filler cap. 4. Start engine and check for oil leaks. 5. Recheck engine oil level. Checking Compressed Pressure 1. Prior to inspection, check that the engine oil, starter motor and battery are normal. 2.
Start the engine and run it until the engine coolant temperature reaches 80 ~ 95°C. 3. Stop the engine and disconnect the ignition coil and air cleaner element. 4. Remove the spark plug. 5. After opening the throttle valve completely, crank the engine to remove foreign material from the cylinder. 6. Install the compression gauge to the spark plug hole. 7. With the throttle valve opened, crank the engine to measure the compressed pressure. 8. If any of all cylinders is out of limit, add a small amount of engine oil to the spark plug hole, and re-proceed the procedures (no.6-7) to the cylinder.
At this time, if the compressed pressure is increased, it means that the piston, piston ring or cylinder surface are worn or damaged, and if the compressed pressure is decreased, it means that the valve is clogged, the valve contact is faulty, or the pressure leaks through gasket. If a large amount of incomplete combustion gasoline comes into the catalytic converter, emergency such as a fire can occur due to overheating. So this job should be done quickly with the engine not operated. G643(E) Service Manual Chapter 2. Recommended Maintenance 20 CAUTION Torque 40~70 N•m Capacity Drain and refill 4.3 L Oil filter 0.5 L Standard (250~400 rpm) Limit 690 kPa CAUTION