well when i left el ninos house last night none of my gauges were working, hit a bump and they came on.... then today on my way to school i was driving on the expressway, at about 50mph my rpm and speedo stop working? then when i left school they were working again. any reason for that? also i really need help ....it starts fine,and runs fine for a few minutes,until it comes up to temperature.Then it will not go and starts backfiring(popping) through the breather.Continues to run but acts like it is flooding out.If i pull over and shut it off for maybe 30 seconds or so it will run fine again for just a few minutes and then start over.I have replaced the spark plugs and wires, dist. cap and rotor.( i copied and paste that) but i really can figure this out i have tried with mechanics but they look at me like im nuts. PLEASE if u have any idea, links, etc..