so my 98 blazer 4x4 started to run rough 1 day after i did my lower intake. intake is tight and no leaks. idle rough give it gas it stutters but keep it in the 2000 rpm range and above runs fine. wth. so i went to people about this and they said spider injector or the FPR went bad cause when its idling its dumping too much fuel in the intake when its in the higher RPMs it burning it off better. makes sense. so i took my air intake on top of the throttle body and flips it open and raw gas smell down inside there. took a flash light and its got alot of gas in the intake so is it the spider/FPR need answers quick.

 

Yes. You're gonna have to find it. Mind that there's cases of the tubes to the nut kit, injector bodies splitting.
Or it may be the FPR.. Run a leakdown test while you're watching it

 

thanks mine has fuel lines running from the back of my motor and bolts on top of the spider assembly do i have to get the nut kit or can i u se my old one. its a retainer bracket holding the spider down to the intake???