What are the symptoms of insufficient cylinder pressure?
2 Answers
Symptoms of insufficient cylinder pressure: 1. Deep grooves are formed on the inner wall of the cylinder, leading to reduced cylinder compression pressure and loss of power; 2. Downward leakage of combustible mixture increases the crankcase pressure, which may cause crankcase explosion in severe cases; 3. Severe smoke from the exhaust pipe, abnormal engine noise, and the engine may fail to operate normally or even stall. Causes of insufficient cylinder pressure: 1. Engine overheating due to leakage or lack of water in the cooling system that is not replenished in time; 2. Piston ring breakage, scratching the cylinder wall; 3. Piston rings stuck in the ring groove due to carbon deposits, losing their sealing function; 4. Piston pin circlip falling off; 5. Foreign objects entering the cylinder.
As a car owner, I've been having a lot of trouble starting my car recently. It often takes several turns of the key before the engine finally starts. When driving, the car feels sluggish with poor acceleration, and even small inclines feel like a struggle. At idle during red lights, the steering wheel shakes violently—it's like sitting on a vibrating massage chair. Fuel consumption has skyrocketed compared to before; the low fuel light comes on after just a few dozen kilometers on a full tank, burning through money like a lavish feast. What's more annoying is the strange "clicking" sound under the hood, like the engine is sneezing. After taking it to the repair shop, the mechanic said it's likely due to insufficient cylinder pressure, causing poor engine compression and incomplete combustion. If not fixed promptly, the engine's lifespan could be drastically shortened.
