Engine part descriptions
G - M
Gasket Sealer
Gasket sealer is a specialized adhesive used to enhance the sealing properties of gaskets in vehicles. It helps prevent leaks by filling small imperfections and gaps between mating surfaces. This product is particularly useful for sealing engine components, transmissions, and other automotive parts where a tight seal is crucial.
Glow Plug
An electrically heated metal probe in diesel engines that warms the air-fuel mixture in combustion chambers during cold starts. It helps ignite the fuel when the engine lacks residual heat. Each cylinder typically has one glow plug, controlled by the engine’s electronic module.
Head Gasket
A head gasket seals the cylinder head to the engine block. It prevents coolant and oil from mixing or entering the combustion chamber. A failing head gasket can cause overheating, engine misfires, white exhaust smoke, and coolant-oil mixing, potentially leading to catastrophic engine failure.
Hose Clamps
Hose clamps are essential components that attach and seal rubber hoses tightly to fittings in various vehicle systems, including cooling, heating, and braking. They come in different types such as spring, screw and band, wire, and T-bolt clamps. Failing hose clamps can lead to leaks, potentially causing engine overheating or brake failure.
IAC Valve
The Idle Air Control (IAC) valve regulates engine idle speed and prevents stalling by controlling airflow around the throttle plate. It can cause issues like incorrect idle speed, stalling, and starting problems when faulty. Symptoms include check engine light illumination and irregular RPMs. Cleaning or replacement may be necessary for repair.
Idle Air Bypass Kit
The Idle Air Bypass Kit is a component that helps regulate engine idle speed by controlling the amount of air bypassing the throttle plate. It’s crucial for maintaining proper idle speed and smooth engine operation, especially when the engine is cold or under varying load conditions.
Idle Speed Control Motor
The Idle Speed Control Motor regulates engine idle speed by adjusting airflow into the engine. It maintains a consistent idle speed regardless of engine load, preventing stalling and ensuring smooth operation. This component is crucial for fuel efficiency and emissions control in modern vehicles.
Ignition Cap and Rotor
The ignition cap and rotor are components of a vehicle’s ignition system. The rotor distributes the spark generated by the ignition coil to each spark plug wire as it rotates inside the distributor cap. Together, they play a vital role in ensuring proper engine ignition and performance.
Ignition Coil
The ignition coil is a transformer that converts low battery voltage to high voltage needed to fire spark plugs, creating combustion in the engine. Modern cars typically have one coil per cylinder. A faulty coil can cause engine misfires, poor performance, reduced fuel economy, and increased emissions.
Ignition Module
The ignition control module is responsible for firing spark plugs at the precise moment for proper engine operation. It uses input from crankshaft or camshaft position sensors to determine spark timing. A faulty module can cause various issues, including engine misfires, stalling, and starting problems.
Ignition System
The ignition system initiates the combustion process in the engine. It generates and distributes high-voltage electrical energy to spark plugs, igniting the air-fuel mixture in the combustion chambers. This system includes parts like the ignition coil, distributor, and spark plugs.
Lower Radiator Hose
The lower radiator hose is a component of a vehicle’s cooling system. It carries cooled coolant from the radiator back to the engine. Signs of failure include coolant leaks, high temperature gauge readings, and engine overheating. Regular inspection for cracks, swelling, and deterioration is recommended to prevent cooling system issues.
MAP Sensor
The Manifold Absolute Pressure (MAP) sensor monitors pressure changes in the intake manifold and reports this information to the engine’s computer. It plays a crucial role in determining fuel and ignition timing for optimal engine performance. A failing MAP sensor can cause various symptoms, including poor acceleration, misfires, and decreased fuel economy.
Mass Airflow Sensor
The Mass Airflow (MAF) Sensor measures the amount of air entering the engine to ensure proper air-fuel mixture. Located in the air intake, it sends data to the engine’s computer to determine the correct fuel amount. Signs of failure include illuminated check engine light, poor engine performance, and increased fuel consumption.
Motor (Engine) Mount
Motor mounts attach the engine to the chassis and dampen vibrations. They consist of metal and rubber/polyurethane components. Signs of failure include odd noises, excessive vibrations, engine misalignment, and potential damage to hoses and belts. Failing mounts can’t be repaired and must be replaced by a professional mechanic.