hi, i have a 92 chevy blazer 4.3 L , fuel issues, i have replaced gas tank , pump , sending unit , egr and all lines going from tank to engine and now it looks like the problem was cpi unit. does anybody have any insight on how much trouble there is changing one of these out and if so the basic way to go about it.
thanks much , jim

 

haynes manuel!!!!!

there is quite a bit to remove that will make this easy.it will walk u through some of the more in depth procedures.
plus give us some more symptoms about what the fuel system is/ or may be doing. ur problem could just be a map sensor or fuel pressure regulator, etc.