my toyota camery wont start

Check timing could have jumped a tooth or two. If all that is good I would then do a compression check. Are you sure it is getting plenty of fuel to crank and run?

I'd check the spark...I'd check whether or not the fuel pump is activated~

Try replacing your MAP sensor. It regulates your air to fuel ratio. If it goes bad your car will not start. You can get them on Ebay pretty cheap. Here's a link so you can read up on it.....http://en.wikipedia.org/wiki/MAP_sensor

check the crank shaft sensor and camshaft sensor , is possible damage