07 Prima, come on, speed up, who asked?

There may be three reasons, namely: 1. Throttle, nozzle and air inlet have more carbon deposits. There are many failures caused by carbon deposition, and some vehicles will feel frustrated, which is also related to carbon deposition. It is recommended to pay attention to cleaning up carbon deposits at ordinary times. 2. The fuel quality is unqualified and the combustion is insufficient. 3. The spark plug, ignition coil, etc. are out of order, resulting in cylinder failure. This needs to go to the store.