Common failures in diesel-powered cars

Although not as popular as gasoline-powered vehicles, today diesel engines are mainly produced for trucks, specialized vehicles, large vehicles, pickup trucks, etc.

The strengths of diesel engines are strong engines, good traction, fuel economy, suitable for areas with complex mountainous terrain, heavy trucks. Therefore, they also have some disadvantages such as noisy engines, higher maintenance and repair costs and spare parts. During vehicle operation, in addition to regular maintenance and vehicle inspection before operation, we must also understand some common failures and how to fix them in diesel engines.

Engine difficult to start

Usually the machine is difficult to start because the power source including the battery and the contact connectors may be damaged, not in contact or dirty. In addition, the cause may also be due to poor grounding,

To fix this, check and charge or replace the battery. Clean and tighten the battery terminals.

The engine only runs at low speed

Cause: Idle speed is too low, tank has little fuel left, filter is clogged.

Solution: Adjust engine speed at idle; Add fuel; Replace or clean filter.

Engine overheated

It is a small but quite important error, it will affect the main engine and valves, pressure, gaskets, piston rings. Mainly to avoid this situation, you should regularly check the vehicle and engine before going, or at least once a week,

The following are possible causes: dirty radiator surface; lack of coolant; clogged radiator; faulty thermostatic valve.

Solution: Clean the radiator; Add water and check for leaks; Spray water to flush the radiator; Check the thermostat.

Black smoke engine

Causes and solutions:

Clogged air filter – Clean or replace air filter.

Suction line rubber hose clogged – Replace if necessary.

Engine consumes excessive fuel

Although it is a common damage, with this error, when we know the cause, if we are just normal users and do not have professional knowledge as well as how to fix it, even if we know the cause. So the advice here is that we should take the car to the garage for inspection and early repair to reduce consumption.

Causes: Poor quality diesel fuel; Engine oil level too high; Fuel line leak; High pressure pump not adjusted properly; Severely worn air filter

Remedy: Check and change fuel; Adjust high pressure pump; Check end of compression pressure.