What to Do When Engine Cylinder Pressure is Insufficient?
2 Answers
The solutions for insufficient engine cylinder pressure 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. The causes of insufficient engine cylinder pressure are: 1. Severe wear of piston rings, leading to reduced sealing effect; 2. Scratches or abnormal wear on the cylinder wall; 3. Poor sealing of the valve seat or spark plug seat; 4. Damage to the cylinder gasket. The symptoms of insufficient engine cylinder pressure are: 1. Excessive smoke escaping from the oil filler opening in the crankcase; 2. The lubricating oil in the oil pan becomes dirty and overheats easily; 3. Noticeable decrease in engine power while driving.
Having driven for over a decade, I know that insufficient engine cylinder pressure is no small matter. The main issues could be poor valve sealing, such as excessive carbon buildup causing sticking, or worn piston rings leading to air leakage and pressure drop. I remember when my old car had unstable idling, sluggish acceleration, and suddenly increased fuel consumption—I checked the spark plugs and engine oil myself, but it didn't help much. Later, at the repair shop, the technician used a compression tester and found the pressure was well below the standard value. The usual solution involves disassembling the engine for inspection, cleaning the valves, or replacing the rings—sometimes even honing the cylinder walls. Don't take it lightly; prolonged neglect can lead to cylinder scoring or even engine failure. If you notice any abnormal power issues, I recommend sending it to a professional shop immediately for inspection, along with checking the air filter and cooling system to prevent overheating and accelerated wear. Regular maintenance with high-quality oil and filters can extend the lifespan of mechanical parts and save you a lot of hassle.
