Why is the diesel truck and bus climbing hills weak?

A. Fuel supply system failure

1. The oil supply system leaks oil or is slightly blocked (oil pipe, hollow screw, diesel filter)

2. The fuel injection pump is faulty, the injector is not evenly sprayed, the atomization is poor or the cylinder is injected.

3. The fuel supply advance angle is wrong.

B. Insufficient compression pressure

1. Inlet (intake and exhaust) tracheal obstruction

2. Improper valve clearance or air leakage of the valve (cylinder head gasket)

3. Cylinder liner, piston, piston ring wear-bonded, broken

4. Insufficient vacuum

C. other reasons

1. Engine temperature is too high

2. The transmission parts are deformed and torque is generated.

C. other reasons

1. Engine temperature is too high

2. The transmission parts are deformed and torque is generated.