Ok its a 1988 R20burb 350 TBI. I did a tune up (plugs fuel filter Cap Rotor O2 Sensor) thinking that it would help well it did but not enough. When I pulled the plugs all 8 were black. I knew it was running rich at idle but it must be all the time. When I pull codes they are 22, 33, 45. When I look inside the TBI the Driver injector puddles up inside but I can wiggle the linkage shaft and make that go away. Also when I pull the MAP sensor plug it seems to idle alot better but still misses it seems. Help please. Let me know if I left anything else out that you need to know..