What is the reason why modern Elantra can't accelerate? What is the reason why Elantra can't speed up?

1. If there is nothing wrong with the air filter, check whether 90 # oil is used. Secondly, if this happens in 93#, check the heat dissipation. If there is no problem with heat dissipation, check the valve closure of the engine. If the valve is not fully closed or the ignition is turned off, these will also cause the car to be weak.

2. Have you cleaned the throttle, injector and three-way catalyst? The normal cleaning cycle should be about 20 thousand kilometers, and the car should be washed two or three times when it travels more than 60 thousand kilometers. So I suggest cleaning it. Also check whether the high-voltage line works normally and whether there is a fire break, which may lead to poor single-cylinder work. Also, check whether the clutch slips. If the clutch slips, it will lose some output power of the engine, and in severe cases, it will cause hanging up.

Usually, you don't step on the accelerator hard enough, and you step on the brake too hard. It is suggested to change hard bottom shoes and increase the intensity of stepping on the accelerator. There will be a reaction after 3 days, and the performance will resume after 1 week. In addition, fixing the throttle position and waiting for speed increase is beneficial to the improvement of vehicle speed increase performance.