7afe help!!, timing seems to be off but have played with it and nothing Options

[95celicastLSR]

okay first off i have new wires cap and rotor, ... I was driving normal and car was missing and sounded like a subaru so i pulled over and saw that my one of my ignition wires came right off the cap so i put it back on and ran fine well i get back in the car and no more than 1 minute the car does it agian and dies well i look under hood and everything looks okay but wont even spark...... i have walbro fuel pump and that is fine switched fuel pumps and its not the pump.... i did have timing advanced and running 93octane but i have been doing that for over a year,........ but i have noticed every now and then for the past few months when i start the car it will act very sluggish and wont even go past idle even when i put it to floor it just bogs out and i would have to shut car off and start it back up and run perfectly fine. lately the past 2 weeks it has been worse and started to bother me and notice now and then it will back fire out of intake....... today i worked on car and played with timing and putting car in diagnostics mode and got car to run and idle but once you give it gas it doesnt want to go up in RPMS and just falls on its face and die....!!!!! so any sugestions ??? plugs look kinda bad ill change those but the way it runs smooth and then just dies and wont start unless you play with timing, its got me stumped bad...... thnx in advance for all of u girls and guys help !!!!!!!