1. Power steering feels heavy or lacks assistance Fault Symptom: The steering becomes heavy, with a brief loss of hydraulic assistance. Cause of malfunction: ① Oil pump V-belt slack ② Oil reservoir level too low ③ Insufficient oil pump pressure ④ Pressure control sticking ⑤ Excessive external leakage ⑥ Excessive internal leakage ⑦ Steering shaft bushing too tight ⑧ Front suspension deformation ⑨ A...