ok so i have a 93 civic coupe with a d16z6 and im having a issue at low rpms with it sputtering and backfiring....i did cap rotor plugs wires.....still same issue. need help cause it is bothering the hell out of me.

 

Did u change the coil too?

 

Any CEL codes?

Have you checked the mechanical and ignition timings?

 

isnt the coil internal in the distibutor?

 

thought it may have been the computer cause the car was converted from auto to manual but the guy never replaced the computer so i did that aswell and its the same

 

The coil is internal to the dizzy. Since you changed the cap, button, plugs and wires; the one thing you left out was the coil. I had the same issue on my GSR, and I changed my coil out after changing the cap and rotor button and it fixed my issue.

 

ok so a little more info is low rpm sputtering black smoke running rich as hell and also i got 52 miles on a half a tank of gas. something is majorly wrong

 

I'm having the same issue. All my sensors are good, timing is good, good compression, new wires, plugs, cap, rotor. Only two things left at this point is load detector sensor and coil for me. If it doesn't work, it's got to be some small vacuum leak I can't track down.

Let me know if you figured it out, I'll update if I find my issue.