Quote from: Gina P on February 08, 2025, 05:04:35 PMAny gear heads, I need help.
Backhoe, diesel motor, runs for 5 minutes then slowly slows down until it stalls. Replaced fuel filter, fuel pump, seams like it is starving for fuel, but I have checked all the lines. Air filter is also good.
An Artificial intelligence reply suggests this:
A diesel motor that runs for five minutes and then slows down until it stalls could be experiencing fuel starvation. This can happen if the fuel filter is clogged or if the
lift pump is not functioning properly, preventing enough fuel from reaching the engine.
(A lift pump is a low-pressure pump designed to transport fuel from the fuel tank to the engine, ensuring a steady and clean fuel supply for diesel engines. It plays a crucial role in maintaining the engine's performance by providing a continuous flow of fuel to the high-pressure pump. In modern diesel vehicles, the lift pump is often a small electric motor-driven device controlled by an electronic control module, which helps regulate the fuel pressure and volume.)
Another potential issue could be air in the fuel system. If air is present, it can cause the fuel filter to not be full, leading to insufficient fuel pressure and ultimately causing the engine to stall.
To diagnose and potentially fix the issue, you should start by checking the fuel filter and replacing it if necessary. Additionally, inspect the lift pump to ensure it is functioning correctly. If the lift pump is mechanical, it might be worth considering an electric lift pump as a replacement, as mechanical lift pumps can sometimes underperform.
If the fuel system appears to be in good condition, you may want to inspect the fuel lines for any obstructions or leaks. Using an air compressor to blow air through the lines can help dislodge any debris that might be causing a blockage.
Regular maintenance, such as cleaning or replacing fuel filters and checking for fuel line obstructions, can help prevent these issues from occurring.
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