I have an 87 350 tbi i have replaced the dis. with pickup ,controle module,coil,plugs,cap,roter,wires,vac.lines,intake gasket,temp sencer,fulfilter, cleaned gas tank,cleaned tbi new gaskets. timeing is @ 0 with etc unpluged still have little rufgh idle and she miss after woremd up just when i take off slowley if i punch it she hesatates then takes off could it be the knock sencer or the o2 she also smells rich egr valve is also good gas pump and pre scrine are new could it be the esc module. sorry about the spelling not my strong spot.

 

replaced knock and o2 now 90% better

 

Only 90%?