Engine backfired won't start
1989 Chevy pickup was running great went up a hill started sputtering and backfired. Engine quit, cranked it over and backfired again and still no start. Checked all fuses everthing looks good. With the backfiring I suspect ignition problems but I haven't had a chance to check for spark or fuel yet. The rig has 144,000 miles on it just tuned it up with spark plug wires,cap,rotor, and fuel filter and exhaust. Everthing has been working great until now. Any ideas?