my 99 Buick Regal began to shake then stalled and now won't start. Getting spark and fuel pressure ok. Tried spraying starter fluid through butterfly. But only backfired. Any suggestions??

this is what happened to my buddy's car when the timing belt broke...smileys/smiley7.gif

Don't think it;s timing belt. Can see valves opening. Any easy way to check fuel injectors?

even if you dont have fuel, the starter fluid should make it at least run for a few seconds...for it to be the injectors All of them have to be not working, which woudlnt make sense why starting fluid wont start it...how can you see the valves moving? perhaps it jumped time?