Why does the Auman truck shake when running?
2 Answers
This situation may indicate the following three conditions of the vehicle: 1. Severe engine carbon deposits: The most common cause of vehicle shaking is a dirty throttle or excessive carbon buildup in the fuel injectors. When there is too much carbon deposit inside the engine, the gasoline sprayed by the cold start injector will be largely absorbed by the carbon deposits, resulting in an overly lean air-fuel mixture during cold starts and making it difficult to start. In this case, the vehicle will only start easily after the carbon deposits have absorbed enough gasoline to reach saturation. After starting, the gasoline adsorbed on the carbon deposits will be drawn into the combustion chamber by the engine's vacuum suction force, causing the air-fuel mixture to become too rich. The fluctuating air-fuel mixture leads to idle shaking after a cold start. 2. Ignition system issues: Check the condition of the spark plugs, high-voltage wires, and ignition coils. Poor performance of the ignition system or improper spark plug firing can also cause such symptoms. Solution: Check if the spark plugs have excessive carbon buildup and replace them if necessary. 3. Unstable oil pressure: If you have already cleaned the engine carbon deposits, throttle, replaced gaskets and spark plugs, but still notice body shaking at idle, it is recommended to visit a 4S shop to check the fuel supply pressure and the intake pressure sensor. Abnormal fuel pump pressure or incorrect readings and poor performance of the intake pressure sensor can all cause body shaking. Solution: Check the oil pressure and replace components if necessary.
As a seasoned truck driver who frequently operates heavy vehicles, I've encountered the issue of truck shaking at high speeds several times while driving Auman trucks. Last time, the steering wheel started vibrating severely once the speed exceeded 60 km/h. After inspection, we found severe imbalance in the left rear tire along with inconsistent tire pressure. After sending it for repair, they performed dynamic tire balancing tests and discovered worn shock absorbers in the front suspension. After replacing the components, the ride became much smoother. Other common causes include bent drive shafts or damaged universal joints, especially for trucks subjected to long-term heavy loading/unloading which impacts these components. Don't underestimate vibrations - they accelerate wear on tires and braking systems, threatening driving safety. I recommend regular inspections of tires, air pressure, and suspension components, with prompt professional diagnosis and repair. Always conduct pre-trip checks before long-haul journeys.
