What are the effects of excessive oil in a single-cylinder diesel engine?
2 Answers
The effects of excessive oil in a single-cylinder diesel engine are as follows: 1. Reduced engine output power. When the engine is running, the crankshaft and connecting rod big end move rapidly. Excessive oil causes violent agitation of the crankshaft and connecting rod, leading to reduced engine output power and increased fuel consumption. 2. Causes blue smoke from the engine exhaust pipe. Excessive oil leads to oil splashing due to the rapid movement of the crankshaft and connecting rod big end, allowing oil to enter the combustion chamber and burn, resulting in blue smoke from the exhaust pipe. 3. Causes faults such as piston ring seizure and fuel injector clogging. After burning, oil easily forms carbon deposits on the piston rings, piston top valve seats, and fuel injector, leading to piston ring seizure, fuel injector clogging, and wear between the piston and cylinder. 4. Causes crankcase explosion. An excessively high oil level can lead to oil vapor generation due to agitation by the connecting rod big end. The oil vapor may ignite upon encountering high temperatures, causing a crankcase explosion.
I've been farming for over a decade, mainly using single-cylinder diesel tractors for fieldwork. Adding too much engine oil is really problematic - the machine starts with a loud humming noise, lubrication efficiency drops, and oil bubbles fly everywhere, causing rapid wear on bearings and pistons. The increased oil pan pressure leads to seal leaks, with black oil gushing out and making a mess on the ground that takes time to clean up. Worse still, the crankshaft churns the oil creating excessive foam, raising oil temperature quickly, accelerating oxidation, and shortening the oil's service life. Now I always check the dipstick first to ensure the oil level is at the midpoint mark. If overfilled, I drain some out to prevent premature engine failure. Never slack on daily maintenance to avoid work delays.
