What Are the Factors Leading to Low Cylinder Pressure?
1 Answers
Cylinder pressure can be low due to the following factors: 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 faulty pressure relief valve; 3. Crankcase air leakage; 4. Severe wear between the piston rings and the cylinder or stuck piston rings causing air leakage. The diagnostic methods for insufficient cylinder pressure include: 1. Unstable engine operation, popping sounds from the exhaust pipe, or backfiring in the carburetor; 2. Difficulty starting a cold engine, with no significant change when climbing hills; 3. Water droplets being expelled from the exhaust pipe, backfiring in the carburetor, or water leaking into or out of the crankcase. A cylinder is a cylindrical metal component that guides the piston in linear reciprocating motion inside the cylinder. Cylinders are categorized into: single-acting cylinders, double-acting cylinders, diaphragm cylinders, and impact cylinders.