What are the reasons for the lack of power in Reiz acceleration?
3 Answers
There are two main aspects to consider for the lack of power in Reiz acceleration. First, fuel supply issues: it is necessary to check whether the gasoline filter has been replaced regularly, whether there is insufficient fuel pressure (fuel pump, fuel pressure regulator sealing ring), whether the fuel pump speed regulator is overheating, or if the fuel injectors are clogged. Second, electronic throttle failure: you need to visit a repair shop to use IT-II to check the data flow during the fault to identify the problem point. Below is an introduction to the Reiz brand: Reiz (REIZ) is the domestic name for the Japanese Toyota MARK-X model. It was produced in October 2005 at Tianjin FAW Toyota Plant No. 2, sharing the production line and chassis with the Crown, and equipped with the same six-speed automatic transmission as the Crown. Production was discontinued in September 2017, with a total of 528,188 units produced.
As a veteran driver with over a decade of experience, I've seen the lack of acceleration in the Reiz far too often. The main culprit is usually severe carbon buildup in the engine. Over time, deposits accumulate in the combustion chamber, leading to incomplete fuel combustion and resulting in poor power output. Worn or dirty spark plugs are another common issue – weak ignition inevitably means sluggish performance. A clogged air filter restricts airflow just like a blocked nostril. My advice is to start by checking these basic components. Try replacing the filter yourself first; if that doesn't work, you'll need a professional carbon cleaning at the shop. Sometimes insufficient fuel pump pressure or poor electrical connections can also cause this problem – warming up the car before driving helps slightly. Regular maintenance is key; don't wait until it becomes severe, or you'll end up spending much more.
I often help others with car repairs, and there are quite a few reasons why a Toyota Mark X (or Reiz) might lack acceleration. From a technical perspective, ignition system issues like worn spark plugs or aging coils, as well as delayed ignition timing, can affect engine power. Fuel supply problems, such as clogged fuel injectors or a dirty fuel filter, can lead to uneven fuel delivery and reduced performance. Additionally, faults in the Engine Control Unit (ECU) or related sensors—like the mass airflow sensor or oxygen sensor—can cause inaccurate signals, leading to improper adjustments by the computer. In automatic transmissions, worn clutches or gearbox components might also cause slipping. It's best to use a diagnostic scanner to read trouble codes rather than forcing the car to drive. Regular oil changes and maintenance can prevent major repairs, saving both money and hassle.
