1st gen. vortec
I just got through putting in a fuel pressure reg. and cleaned plugs,e.g.r "full of carbon" so i solved my fuel problem,getting spark, but runs roughand i get a poping sound in my exaust system when it is idleing when i rev up it just acts very weak ,ive checked vacuum lines spark and fuel pressure all good gets no codes while at park,i havent tryied to drive any do to this"to tst out" .question on e.g.r als when it is cleaned is it suppose to actuate up and down by pushing it with my finger or is thier suppose to be some resistance....Thanks for any help

 

I found problem dont want to say but I guess we all make mistakes I had the plug wire off by 1.lol haha 2weeks sitting here for nothing but runs A-1 now .

 

lol we all make mistakes. At least it was an easy fix and the truck is running 100% now.