94 jimmy SLE rich/bogging

kbold

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ok so i got a 94 gmc jimmy SLE with the 4.3 vortec its auto 4wd 4door.. i had bought it from a guy and the rig had sat for over a year not started or anything. well i gave it a tuneup because it had a horrible surge and missfire.. was arcing to top of cap from each wire. it improved alot then the coil went so i replaced it and fixed its issues, but now its running really rich and sometimes is not responsive and loads up and will die on occasion. im getting about 12-16mpg highway. previous owner told me TPS sensor was acting up and would need changed. i started rig and unplugged it with no idle or engine change. still really gassy smelling. motor has 157k, with full synthetic ran its whole life.
 
Check out the CPI. Classic problem. Sometimes the spider (injector) cracks - lots of fuel - still runs though.
 


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