Well the last few days my bone stock 85 runner has been running quite well. The other morning it was quite cold out and it started but was running super choppy. Next few days it would run quite well except my battery kept draining on me. Today i swapped it out and gave it a try. It would turn over a few times then fire up and sit at about 500-1000 rpms for a few seconds then die. I would try it again and same thing. If i kept the starter going it would run for a wee bit then once i let off the starter it would run and then die again. Started my trouble shooting but still nothing. Any help?