ef XR6 Miss at idle & brake bleed issue
New to the forum so sorry if this has been covered before, looking for some expert advice please.
Miss at idle only, replaced coil pack leads and plugs, runs normally at all other engine speeds, only started after replace brake master cylinder???
Issue 2: Replaced master cylinder with new item, bosster works fine, no visable leaks in any of the brake lines or master or calipers, car has ABS, tried to bleed up left rear right reat etc etc, got front to bleed up fine but rear just oozes out with no pressure, peddle is soft.
Took out ABS fuse in case this was causing problems with bleed, bought vacum bleed system, getting plenty of pressure from fronts with no air, but no pressure from back.
Any ideas??? 9 hr later and still no brakes, also the brake fail indicator is now constantly on???
Appreciate any advice as im all out of ideas.