94 e420 Failed Smog ; Please HELP
 

Please HELP- 94 e420 FAILED SMOG Again

My 1994 e420 keeps Failing NV Required Smog Test: for the third time.
So far I have changed spark plugs ( Bosch F8DC4), spark plug wires, 2 New Bosch dist. Cap. New Bosch rotor(2), coolant level sensor, coolant temp sensor.
Here are my test results,,,,,,,,,

Test Parameter. Result. Additional info.

Idle speed CO. 9.99 %. Greater than 1.2 %
High speed CO. 8.24 % Greater than 1.2 %
Idle speed HC. 671 Greater than 220 parts per mill.
High speed HC. 425 Greater than 220 parts per mill.

Also; the smog check " technician" says engine is getting 'way too much fuel' pumped into the engine - so much so that it is also causing a "Misfire" because of Excessive fuel.
OK guys: Please Help, Advise what to repair, replace ; as I really Need to at least PASS smog test !!!!!!!
THANKS ALL for Help, Suggestions, Recommendations etc. Chance

Check codes. I suspect you will find something with a MAP or MAF sensor out of range.