Is a Major Overhaul Necessary for Insufficient Cylinder Compression in Cars?

[KateDella]

Is a major overhaul necessary for insufficient cylinder compression in cars? The causes of insufficient cylinder compression are: 1. Air leakage between the cylinder head and the cylinder; 2. Air leakage between the spark plug sealing gasket and the cylinder head or a leaking pressure relief valve; 3. Air leakage in the crankcase; 4. Severe wear between the piston rings and the cylinder or stuck piston rings causing air leakage. The diagnostic methods for insufficient cylinder compression are: 1. Unstable engine operation, popping sounds from the exhaust pipe or backfiring in the carburetor; 2. Difficulty starting the engine when cold, with no significant change when climbing hills; 3. Water droplets expelled from the exhaust pipe, backfiring in the carburetor, or water leaking into or out of the crankcase. The solutions for insufficient cylinder compression are: 1. Replace the valve oil seal; 2. Replace the piston and piston rings; 3. Install a cylinder liner; 4. Replace the valve spring; 5. Replace the cylinder head gasket.