What are the symptoms of bearing seizure?
2 Answers
Abnormal decrease in lubricating oil pressure, a large amount of smoke generated in the crankcase, accompanied by abnormal noise from the crankcase, the crankshaft cannot be turned, and the lubricating oil contains a lot of alloy powder. Below is relevant information about bearing seizure: 1. Definition of bearing seizure: Bearing seizure refers to the condition where the crankshaft journal and bearing shell of the engine lock due to lack of lubrication, which is called "bearing seizure". The burning and wear of the bearing shell due to lack of lubrication between the crankshaft journal and bearing shell is called "bearing burning". When both symptoms occur, it is referred to as "bearing seizure". 2. The main causes of bearing seizure in vehicles are as follows: (1) Poor quality of the crankshaft and bearing shells, with poor surface finish of the journal and bearing shells, especially in vehicles that have had bearing shells replaced during major repairs. (2) Incorrect installation of main and connecting rod bearings, with improper clearance adjustment.
I've been driving for decades. Last time on the highway, I suddenly heard a 'knocking' sound from the engine, like metal striking metal. The car's acceleration noticeably slowed down, and the oil pressure light started flashing. It was really scary. I quickly pulled over and turned off the engine. When it was towed to the repair shop, it turned out to be a problem of bearing seizure and connecting rod knock—the bearings were worn and stuck together, almost causing the engine to be scrapped. This was mainly due to poor lubrication, either too little oil or too much sludge. If not dealt with promptly, the car could have broken down in the middle of the road, which would be even more dangerous in rain or snow. That's why I always remind my fellow drivers to change the oil and filter regularly and not to delay it too long, especially after long trips. Always check the engine's condition—safety comes first.
