Hello Fella's
I have a 1993 chevy 454 trottle body injected.
This thing is running really rich, the driver is complaining of the fumes.
I had a check engine light on with a couple of codes & had to replace the o2 sensor & ecm temp switch.I cleared out the codes & tuned it up.This thing burns a lot of oil.
Anyway, it is running really rich, all vacume lines are connected & I can't seem to fine the problem.
Any Ideas would help.
Thanks in advance.

 

any other codes? how about the idle?

also could be an exhaust leak if he is complaining of fumes.