- Low oil pressure: If the oil pump is not functioning properly, it can cause the oil pressure to drop, which can lead to engine knocking.
- Worn or damaged engine bearings: Engine bearings are responsible for supporting the crankshaft and connecting rods. If they are worn or damaged, they can cause a knocking sound.
- Loose or damaged piston skirts: The piston skirts are the parts of the pistons that move up and down in the cylinders. If they are loose or damaged, they can cause a knocking sound.
- Carbon buildup: Carbon buildup on the pistons, valves, or combustion chambers can also cause a knocking sound.
If you are experiencing engine knocking in your 88 Cutlass Supreme, it is important to have it diagnosed by a qualified mechanic to determine the cause and get the necessary repairs.
