1. Air in the fuel line. When your car runs out of diesel, air can get into the fuel line. This can cause the engine to run erratically or stall.
2. Loss of prime. When the fuel tank is empty, the fuel pump can lose its prime. This means that it will need to work harder to get fuel to the engine. This can cause the engine to run slowly or stall.
3. Damage to the fuel pump. Running a diesel engine without fuel can damage the fuel pump. This is because the fuel pump relies on the diesel to lubricate it. Without diesel, the fuel pump can overheat and fail.
If you suspect that your car is not running properly because it ran out of diesel, there are a few things you can do:
1. Check the fuel line for air. Look for bubbles in the fuel line. If you see bubbles, it means that there is air in the fuel line. You will need to bleed the air from the fuel line.
2. Check the fuel pump for damage. If the fuel pump is damaged, it will need to be replaced.
3. Have the car towed to a mechanic. If you are unable to fix the problem yourself, you should have the car towed to a mechanic.
It is important to note that running a diesel engine without fuel can cause serious damage. If you suspect that your car has run out of diesel, stop driving it immediately and have it towed to a mechanic.
