Failed fuel pumps are possible but relatively rare. Put 12VDC directly to the new pump to see if it runs. Now put 12VDC to the old pump and see if it runs. If they run, it's not a fuel pump problem and we are still missing something.
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2009 Cayman 2.9L PDK (with a few tweaks)
PCA-GPX Chief Driving Instructor-Ret.
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