So I had my 22re rebuilt last year and put about 3500 miles on it so far. Drove it around Saturday and it ran just fine and then parked it. Got in this morning and turned the key over and it backfired loud and did not start. When I crank it it starts for 1/2 a second then dies right off. Sometimes backfiring. Do you think the timing chain could have broke? I dont know if it would even start for that half a second then. Any one have ideas. I had to rush off and get a ride to work so I havent looked at it yet. After work I will check the rotor. Maybe that broke?