What Causes the Roaring Sound When Accelerating in Baojun 730 Engine?
2 Answers
Baojun 730 engine roaring sound during acceleration can be caused by the following reasons: 1. Engine misfire: Leads to increased fuel consumption, black smoke emission, weak acceleration, and severe shaking. 2. Clutch slipping: Results in incomplete gear engagement or disengagement. 3. Low fuel rail pressure: Caused by dirty throttle position sensor or voltage imbalance leading to electronic throttle failure.
I've driven quite a few cars, and the whirring sound during acceleration in the Baojun 730 is actually quite common. This is usually the sound of the turbocharger, especially in the 1.5T models. When you press the accelerator hard and the engine runs at high speed, the turbo rapidly sucks in air, producing this whirring noise. If the volume isn't too loud and the car accelerates smoothly, it's within the normal range. However, if the sound becomes harsh or is accompanied by other unusual noises, you should check the intake pipes—it could be loose connections or aging rubber causing air leaks, leading to turbulent airflow and a gurgling sound. Another possibility is insufficient belt tension or worn-out fan bearings making a squeaking noise at high speeds. I recommend regularly cleaning the air filter to prevent clogging and checking the pipe seals. If anything seems off, take it to a professional shop immediately for diagnostic tests to avoid minor issues turning into major repairs that affect fuel efficiency and performance. Safety first—don't wait until the noise gets worse to take action.
