Hydraulic brake systems can develop leaks in the brake lines or calipers, which can lead to reduced braking performance and increased stopping distances.

The brake master cylinder can wear out over time, leading to a spongy brake pedal or a brake pedal that sinks to the floor.

Calipers can seize due to corrosion or become stuck, causing uneven brake pad wear and pulling to one side when braking.

The brake booster may lose vacuum, leading to harder brake pedal effort and reduced braking efficiency.

Brake pads naturally wear down over time and require regular inspection and replacement to maintain optimal braking performance.

The 1991 Plymouth Laser with an in-line 4-cylinder engine often experiences oil leaks due to aging seals and gaskets.

The timing belt in this model can wear out or break, leading to engine misfires or a complete engine shutdown.

The cooling system components, such as the radiator or water pump, may fail, causing the engine to overheat.

The MPI (Multi-Point Injection) system can develop problems with clogged or malfunctioning fuel injectors, leading to poor engine performance.

The head gasket in this engine can fail, resulting in coolant leaks, overheating, and potential engine damage.

Various vacuum hoses and connections can degrade over time, causing rough idling or stalling.

Components such as the ignition coils, spark plugs, and wires may wear out, causing misfires or starting issues.