Running out of fuel is more than just an empty tank; it’s a disturbance of the "sediment layer." Every fuel tank, over time, accumulates a small amount of debris and moisture at the very bottom. When the fuel level drops to zero, the pump is forced to suck up this concentrated sludge. This often leads to a sudden, severe clog in the fuel filter.

Even if you bleed the air out, a clogged filter will restrict fuel flow, causing the engine to stumble, lose power, or stall again shortly after starting. Professional mechanics often recommend that if you have run a diesel engine completely dry, you should take the opportunity to replace the fuel filter entirely. If a replacement isn't available, at the very least, you should drain the water separator and check the filter for heavy contamination. Ensuring a clear, unobstructed path for the fuel is just as important as removing the air. A fresh filter ensures that the high-pressure pump receives clean, consistent fuel, protecting the heart of your engine from abrasive particles. Click here to know more.