What are the reasons for the sluggish acceleration of Jinbei Haise?
3 Answers
Here are the reasons for the sluggish acceleration of Jinbei Haise: 1. Carbon deposit issue: Carbon deposit is a common problem in cars. As the car is used, the interior may accumulate sludge or other dirt due to incomplete combustion, which can adhere to the components and cause the engine to stall during operation. 2. Road condition reasons: Besides internal components, the reason for the car's inability to accelerate may also be related to road conditions. For example, driving on congested roads with frequent acceleration and deceleration can prevent car components from responding promptly, leading to poor acceleration and weak starting. 3. Fuel quality issue: If the fuel quality is poor, it can affect the car's fuel system and fuel filter due to excessive impurities in the fuel, causing blockages. This can result in insufficient fuel supply, preventing the engine from operating normally and leading to weak acceleration.
I just encountered this issue last week - the car had no power even when flooring the accelerator, and the engine was roaring. With Jinbei Haise vehicles, this is mostly caused by clogged fuel lines or air intake. First check the air filter; if the filter element is completely caked with dust, replace it. A clogged fuel pump screen in the gas tank can also restrict fuel supply - this requires removing the fuel tank. If the fuel filter hasn't been changed in two years, it's definitely clogged; just replace it with a new filter element costing a few dozen yuan. If the spark plugs are burnt black or have incorrect gaps, weak ignition will naturally result in poor acceleration. Also check the throttle body - especially in older vehicles where carbon buildup may be clogging the valve; spraying cleaner and wiping it can help. If all these are ruled out, you'll need to test cylinder compression or check if the catalytic converter is clogged.
Having repaired Jinbei vehicles for over a decade, throttle hesitation issues are encountered daily. First, check if the exhaust pipe emits black smoke - smoke indicates an over-rich air-fuel mixture; inspect the oxygen sensor and charcoal canister solenoid valve. If the exhaust pipe appears red, it means the catalytic converter is completely clogged and must be replaced immediately, otherwise the engine will be ruined. Use a diagnostic scanner to read trouble codes - faults in the throttle position sensor or mass airflow sensor will be logged. For mechanical aspects, focus on checking valve clearance as Hiace valves tend to tighten over time. Clutch slippage can also cause RPM to rise quickly without corresponding speed increase - test by engaging gear with parking brake on while gently pressing the throttle; if RPM surges, the clutch is finished.
