hyundai — Shop Manual: Hyundai L4GC — Industrial Engine Repair & Parts (EN)

GENERAL 2-14 7. With the throttle valve opened, crank the engine to measure the compressed pressure. 8. Follow the procedures (no.6-7) to each cylinder and check that compressed pressure values of all cylinders are within the limit. L4GC020A 9. 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 proce- dures (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.

CAUTION If a large amount of incomplete combustion gaso- line 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. Standard(250~400rpm) Standard 15kg/cm2 Limit 14kg/cm2 Limit 1.0kg/cm2