Usually when dismantlers have a good running engine, it's sprayed with rust-inhibitor, put in an oil vapor bag and stored in a warehouse.

This thing look like it been left outside and open (valve covers, timing chain cover and intake removed), even the fuel rails and vacuum lines left unsealed/exposed to NE elements can cause issues.

This motor looks shady.

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'03 X5 4.4 Sport, last of the M62s (8-03 build date)
I believe in deadication to craftmanship in a world of mediocrity!