What are the reasons for the lack of acceleration in the old Mondeo?

[DiJourney]

Here are the specific reasons for the lack of acceleration in the old Mondeo: 1. Intake pipe leakage: Leakage in the intake pipe leads to an overly lean air-fuel mixture. 2. Low fuel pressure: Clogged fuel injectors or fuel filters result in insufficient fuel injection or delayed fuel delivery. 3. Abnormal throttle position sensor signal: Malfunctions in sensors such as the air flow meter, intake manifold absolute pressure sensor, or throttle position sensor cause inadequate fuel injection. 4. Abnormal sensor signals: Faulty sensor signals lead to incorrect ignition timing, causing delayed ignition. 5. Poor high-voltage wires: Weak sparks due to faulty spark plugs, ignition coils, or high-voltage wires.