ok people i need help bad. i have a 1986 mustang coupe that i have had for about a year now and ran fine untill about a week ago. the car use to be efi but now is carb and they where still useing the tfi distrebuter well i lost spark to the motor las week and just decided to change the distributer to a carb one with pretronix in it and i changed to coil to a blaster 2 and still nothin in need help let me know what yall think thanks

 

where do you have spark for sure ? coil ? or not even the coil ?

 

not even the coil

 

If I had to guess, I'd say the distributor wasn't working. But the diagnosis depends on what pertronix distributor you had.

 

its stock but with pertronix in it with a red and blk wire comin out of it

 

Ok. That's a points distributor. Check the points for burn marks, clean if so(sandpaper), and re-gap them to factory specs. If no spark after that, replace points.