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i have a 95 eg sedan it showing me code 43,ive changed fuel filter fuel pump and its still showing code 43 any ideas wat else it could be im goin to change the o2 sencor nxt but after that im lost wen im driving and i give it gas dark blue smoke comes out the tailpipe lol i dnt know if im lacking fuel or getting to much

 
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you are too rich, instead of changing o2 sensor, find someone with a scantool and see if you can get more information

 
Rep Power: 215

Blue smoke = burning fuel which means unburnt fuel is getting into your exhaust.

There could be a hundred reasons for this...try these things in this order;

1) Spark plugs!!! What do they look like? Are they wet? Smell them, do they smell like fuel? Are they gaped correctly?

2) Your injectors could not be atomizing the fuel and instead pouring the fluid in...run "seafoam" through the system

3) Do you know how to check your timing?