What is the cause of oil leak on fuel pump on 1998 Isuzu KB 260?

An oil leak on the fuel pump of a 1998 Isuzu KB 260 can be caused by several factors, including worn or damaged seals and gaskets, which can fail over time due to heat and pressure. Additionally, loose fittings or connections may also contribute to leaks. It's important to inspect the fuel pump and surrounding components for any signs of wear or damage to diagnose and resolve the issue effectively. Regular maintenance can help prevent such leaks from occurring.