What Causes the Geely Emgrand to Jerk at Startup and Lack Acceleration?
3 Answers
Reasons for the Geely Emgrand jerking at startup and lacking acceleration: 1. Air intake pipe leakage leading to an overly lean air-fuel mixture; 2. Low fuel pressure, clogged fuel injectors or fuel filter causing insufficient fuel injection or delayed fuel increase; 3. Abnormal signals from sensors such as the air flow meter, intake manifold absolute pressure sensor, and throttle position sensor, resulting in no or insufficient increase in fuel injection; 4. Abnormal sensor signals causing incorrect ignition timing, leading to delayed ignition. The Geely Emgrand is a sub-brand under the Geely parent brand. The Emgrand GL is a compact car under the Geely Emgrand lineup, with dimensions of 4725 mm in length, 1802 mm in width, and 1478 mm in height, and a wheelbase of 2700 mm. In terms of suspension, the Emgrand GL features a MacPherson independent front suspension with a stabilizer bar and a torsion beam rear suspension.
I had a similar issue with my previous car. It always hesitated when starting and lacked power during acceleration, which was really frustrating. Later, after an inspection, I found out that for cars like the Geely Emgrand, the problem might be with the ignition system—such as worn-out spark plugs due to prolonged use or excessive electrode gap, which needed replacement. Alternatively, it could be a faulty ignition coil leading to incomplete combustion. Another possibility is issues with the fuel system, like an unstable fuel pump or clogged fuel injectors, resulting in insufficient fuel supply and poor performance. Additionally, a clogged air filter can reduce air intake and lower engine efficiency. Improper transmission operation or worn clutch plates could also be culprits. My suggestion is to start with simple fixes, like replacing the spark plugs or cleaning the throttle body. If that doesn’t work, seek professional diagnosis to avoid long-term damage. Remember to accelerate gently when driving and stick to regular maintenance—don’t procrastinate until minor issues become major problems.
I've seen plenty of cases of cars with this kind of stuttering start and weak acceleration. The key is to check several common areas: First, inspect the engine's ignition system. Worn or damaged spark plugs are the primary factor, and they should be replaced regularly to avoid ignition delays. Second, the fuel pump or injectors might be faulty, causing insufficient fuel pressure and intermittent fuel supply, leading to sluggish acceleration. Third, a clogged air system with a dirty air filter restricts airflow, affecting combustion efficiency. Fourth, severe carbon buildup on the throttle body can cause sticking or slow response, resulting in shaky starts. Fifth, sensor failures, such as an unresponsive MAF sensor, can lead to computer control errors. It's recommended to first use a diagnostic tool to read the fault codes, then proceed step by step with part replacements or cleaning—don't tamper with the wiring recklessly. Use high-quality fuel and change filters on schedule for prevention. Address any abnormalities promptly to avoid engine component wear and damage.
