OK OK. We all now know that the pump is bad. Let's move on.

there is almost 10gallons in the tank. We also plan on replacing the old fuel lines, filter and maybe the tank strainer. I'll capture the fuel into clean containers. Is it too risky (contaminated) to reuse the fuel if you pour it back in avoiding any sediment from the bottom of the container? What do repair shops do, reuse the fuel or dispose of it at a haz mat site?

do you recommend changing the strainer too?

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1972 450SL
1982 300D Turbo