What causes the lack of power in acceleration and engine wheezing in the 6th and 7th gears of the Tayron?

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The reasons for the lack of power in acceleration and engine wheezing in the 6th and 7th gears of the Tayron are as follows: Exhaust system malfunction: Exhaust system malfunction mainly refers to poor exhaust flow, usually caused by a broken catalytic converter. Of course, if someone mischievously stuffs potatoes, steel wool balls, etc., into the exhaust pipe, that's a different story. A blocked exhaust pipe will lead to a decrease in engine power. Clutch malfunction: Slipping clutch in manual transmission models can cause the engine speed to increase during acceleration while the vehicle speed does not rise. Dual-clutch automatic transmissions can also experience such faults. Air conditioning issues: If the air conditioning is turned on during summer, small-displacement models will feel sluggish in acceleration, and fuel consumption will significantly increase. This is because the air conditioning requires driving the compressor when operating, and the compressor demands a substantial amount of power. The engine has to carry such a large internal load, so it's inevitable to feel slow acceleration and lack of power.