89 4.3l running rich

[Mark87]

89 4.3l TBI

 

Just had the motor rebuilt(bored 060 over). The motor is now running really rich. Rich enough that the plugs are wet and a dark brown in color(repalced plugs and wires same result). Replaced the injectors recently no help. Base timing properly set to 0*. Fuel pressure @ 12.5(spec 9-13). Vacuum check shows 21-20 in. bounces to indicate rich running engine. Once warm idles horrible but drives ok. Did a run on winaldl and it verifies rich. Should I be looking at a spark or sensor problem? Anyone willing to take a look at the data and offer any advice would be appreciated.

 

Also I have not yet set the minimum idle air. Should I replace anything before doing that? If I give the engine a vacuum leak it will lean out nicely(obviously).

 

http://nodial.net/onthego/20060111_173024_LOG.xls

 

PROM ID 3491

 

Thanks,

MArk