or a plugged fuel return line. only way I know to test the screen is remove and inspect.
the return line can be tested by blowing into the cigar line. should easily blow free. remove the fuel tank cap first.
your turbo may have failed as well. pull off the u tube WITH THE CAR OFF! and check to see ifit spins freely and then lift and rock it side to side and see if it has any play. mine moves about 1 MM and my car works ok. also look and see if you have oil all over the blades. you could have a bad seal in the oil line.
just some other things to check sorry I am not an expert on these cars YET. but I am learning.
John