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eng power loss?

ford zx2,i will miss fire,at high rpm, miss fire codes come up.i have replace ,coil,wires ,plups.
mel hogaboom, January 2006
You didn`t mention what year but it might not be the secondary ingnition and possably just a injector .......can you identify which cylinder it is ?
Try having a injector flush done on the fuel sytem and add a can of BG fueal cleaner .......

bg, January 2006
link Click here to see other fixes for Ford.