What Are the Reasons for Poor Car Acceleration?
3 Answers
Reasons for poor engine acceleration: 1. Engine lubrication and cooling system failure, causing engine overheating; 2. Intake pipe leakage leading to excessively lean air-fuel mixture; 3. Weak high-voltage spark due to faulty spark plugs, igniters, or high-voltage wires; 4. Malfunctioning exhaust gas recirculation system; 5. Faults in components such as the air flow meter, intake manifold absolute pressure sensor, or throttle position sensor; 6. Turbocharger system failure; 7. Carbon buildup in cylinders, throttle, spark plugs, or intake passages. Solutions for poor engine acceleration: 1. Check and replenish engine oil and coolant as needed; 2. Inspect the air filter for dirt and clean or replace it accordingly; 3. Visit a 4S shop for engine carbon deposit cleaning; 4. Schedule regular maintenance at a 4S shop; 5. Maintain good driving habits and avoid aggressive driving.
That day when I took my old buddy out for a drive, pressing the accelerator felt like stepping on cotton—couldn't pick up speed for the longest time. Nine times out of ten, this kind of issue is caused by problems in the fuel system. Clogged fuel injectors lead to poor fuel spray, or an aging fuel pump can't keep up with supply, leaving the car naturally lacking power. Last time my car had the same issue, upon opening it up, the fuel filter was full of black impurities. However, the most easily overlooked part is the air filter—if you don't change it for three months, the air intake drops by half, and the engine working on an empty stomach has no strength. Another tip: if it's especially noticeable when climbing hills, it's likely the catalytic converter is clogged, with exhaust gases unable to escape, causing the engine to choke.
When the engine is gasping for air, first check the exhaust pipe's temperature. If it's ice cold, the ignition system is definitely on strike. I've encountered this twice: the first time, the spark plug was so caked with carbon deposits it looked like a rice dumpling, and the electrode was completely worn out; the second time, the ignition coil was cracked and leaked electricity on rainy days. Now, I pop the hood every month to sand the distributor rotor and check the high-voltage wires for cracks. I remember one winter cold start when the engine shook like a sieve—reading the fault code revealed one cylinder wasn't firing at all. Replacing the coil fixed it instantly. Don't underestimate these small parts; one bad spark plug out of four can make the car lose 30% of its power.
