2001 Ford Taurus Missfire P0302 on 3.0 V6 OHV

I have replaced the 02 sensor, injector for cyl. #2, wires, plugs it was tune up time anyway. I just replaced the cam sensor and sysc. Shaft. I am getting a 302 that I can get rid of. Compression is within specs. Plug is clean, and I am getting a chirping/whining sound coming from the upper intake(It was worse until I changed the cam parts).

I metered these sensors and they test ok: MAF, TPS and ERG solenoid. Vacuum hose look good and I replaced the PVC valve, hose and cup.