What causes abnormal noise and failure to start when a diesel engine is ignited?
2 Answers
It is mainly due to excessive carbon deposits in the idle speed motor, intake tract, intake valve, and combustion chamber. Function Introduction: The carburetor's function is to utilize the kinetic energy of the incoming air stream to atomize gasoline. Carburetors are divided into simple carburetors and complex carburetors. They can also be classified as downdraft and sidedraft types. Based on the throttle valve type, carburetors can further be categorized as rotary and lift types. Carburetor Introduction: The carburetor automatically adjusts the corresponding concentration and outputs the appropriate amount of air-fuel mixture according to the engine's different working conditions. To ensure a more uniform mixture, the carburetor also has the effect of atomizing the fuel to support the normal operation of the engine.
When encountering a diesel car making noise but failing to start, I'll share my experience. This abnormal sound mostly comes from the starter motor—it's cranking the engine but failing to ignite, producing a clicking or rattling noise. The most common cause is a weak battery, as diesel engines require high current to compress cylinders, and aged batteries lack power. Another issue is fuel-related, like clogged filters or faulty pumps preventing fuel delivery, making starting difficult. In winter, thickened diesel worsens the problem—I've faced this; solutions include battery replacement or fuel line checks. If noises persist, avoid forcing ignition to prevent part damage. If simple checks don't help, seek professional repair promptly to avoid higher costs. Regular maintenance tips: use battery testers to monitor charge and replace fuel filters annually for optimal performance.
