What are the reasons for insufficient fuel supply in a car?

[DelPaige]

There are several reasons for insufficient fuel supply in a car: 1. Incorrect valve timing, such as poor sealing of intake and exhaust valves; 2. Fuel pump malfunction due to internal or circuit issues, overheating causing poor performance, short circuit, or burnout leading to insufficient or stopped fuel supply; 3. Blockage in the intake system, such as the air filter not allowing proper combustion with fuel; 4. Internal engine faults, improper maintenance, abnormal wear, or issues with cylinder compression; 5. Blockage in the fuel system; 6. Abnormal ignition of spark plugs, aging components, exceeding normal lifespan requiring replacement, carbon deposits, incorrect model selection; 7. Poor performance of the ignition system, such as issues with spark plugs or high-voltage wires.