The hose is the probable culprit, and should be replaced. The fuel strainer is very durable and can easily be cleaned and reused, at least mine was. brush off all the crud you can, then soak it in degreaser for a few hours,and blast it with water. It is under $25 in most places, bit why buy it if you don't need to?

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Semibodacious Transmogrifications a Specialty

1990 300D 2.5 Turbo sedan 171K (Rudolf)
1985 300D Turbo TD Wagon 219K (Remuda)

"Time flies like and arrow, yet fruit flies like a banana"
---Marx (Groucho)