2. Drum Brakes: Drum brakes are less commonly used today but can still be found in some vehicles, typically in the rear wheels. They consist of a brake drum, brake shoes, and wheel cylinders. When the brake pedal is pressed, the brake shoes press against the inside of the drum, creating friction to slow down the wheels.

3. Faulty Oil Pressure Sensor: The oil pressure sensor is responsible for monitoring the oil pressure in the engine. If the sensor is faulty or malfunctioning, it may trigger the engine oil light to come on even if the oil pressure is normal. In this case, you may need to have the sensor tested and replaced by a qualified mechanic.

5. Engine Mechanical Issues: In some cases, the engine oil light may indicate more serious mechanical problems within the engine, such as worn-out bearings, a failing oil pump, or other internal issues. If you suspect a more significant problem, it is best to have a professional mechanic inspect and diagnose the issue.

Types of Diesel Injection Pump:
There are mainly two types of diesel injection pumps - mechanical and electronic. Mechanical diesel injection pumps are older and work through a system of mechanical components that control the fuel injection timing and quantity. Electronic diesel injection pumps, on the other hand, are more modern and use electronic sensors and controls to deliver fuel with greater precision and efficiency.

Importance of Transmission Shift Points:
The transmission is a critical component of a vehicle's drivetrain system, directly impacting its performance, fuel efficiency, and overall longevity. A well-maintained transmission can help ensure smooth and efficient operation of the vehicle, while a neglected transmission can lead to costly repairs and decreased performance.

How Transmission Works:
The primary function of a transmission is to regulate the amount of power delivered from the engine to the wheels. When you shift gears in a vehicle, the transmission either increases or decreases the engine's RPM (revolutions per minute) to optimize performance. This allows the vehicle to operate efficiently at various speeds and under different driving conditions.

Maintaining your PCV valve:
Regular maintenance and inspection of the PCV valve is key to ensuring the longevity and efficiency of your vehicle's engine. It is recommended to have the PCV valve checked during routine tune-ups or scheduled maintenance visits. In some cases, the PCV valve may need to be replaced every 30,000 to 50,000 miles, but it is always best to refer to your vehicle's specific maintenance schedule.

In conclusion, the engine oil light is a crucial warning indicator that should never be ignored. Regularly checking your vehicle's oil levels, addressing any leaks promptly, and performing routine maintenance can help prevent engine damage and ensure your vehicle's optimal performance. If you are unsure about diagnosing the engine oil light issue or require professional assistance, it is recommended to consult a qualified mechanic for a thorough inspection.

The Positive Crankcase Ventilation (PCV) valve is a simple but essential component in your vehicle's engine system. Many drivers may not be fully aware of its function, but understanding the role of the PCV valve can help you maintain the health and performance of your car.

Why is the PCV valve important?
The main purpose of the PCV valve is to prevent the build-up of pressure inside the engine crankcase. Without the proper ventilation provided by the PCV valve, pressure can accumulate, leading to potential damage to engine seals, gaskets, and other components. Additionally, the PCV valve helps to reduce emissions by recirculating and burning off these harmful gases, contributing to a cleaner and more efficient running engine.

Working Principle:
The diesel injection pump works by pressurizing fuel and delivering it to the engine cylinders at the exact moment required for combustion. The fuel is stored in the pump's reservoir, where it is pressurized by a plunger mechanism. When the engine's piston reaches a certain point, the pump injects the fuel into the cylinder through a fuel injector nozzle. The timing and quantity of fuel injection are crucial for achieving optimal engine performance and fuel efficiency.

2. Oil Leak: Another reason for the engine oil light to come on is an oil leak. If you notice oil spots under your vehicle or a burning oil smell, it is likely that your engine is leaking oil. Inspect the engine and the oil pan for any signs of leakage. Addressing an oil leak promptly is important to prevent engine damage and potential breakdowns.

What is a PCV valve?
The PCV valve is a small, often overlooked part that plays a crucial role in the engine's operation. It is connected to the crankcase of the engine and helps to regulate and control the ventilation of harmful gases and vapors that are produced during the combustion process. The PCV valve acts as a one-way valve, allowing gases to flow from the crankcase into the intake manifold where they can be safely burned off in the combustion chamber.