96 camry won't start

Look for the computer codes. The computer controls the spark. If there is no spark, either it is because the computer is not commanding it or not. This lets you know if it's a sensor issue (that the computer doesn't know where TDC is, for instance, so it doesn't know when to fire), or a problem after the computer (ie. the computer is telling it to fire but the coil or ignition module is faulty).

--scott

How about timing belt?

Well, it doesn't sound like you're going to be able to learn how to diagnose the cause with one newsgroup thread. I can tell you that if you have the 4 cylinder engine, the two most common no-start causes are broken timing belt (like somick suggested) and a failed ignition coil. Add to that -- any non-OEM ignition components on that car (with the possible exception of NGK aftermarket wires) are problems waiting to happen.

If you have no spark when cranking, take off the distributor cap and have someone crank the engine. Watch the distributor rotor to see if it turns when the engine is cranking. If it isn't, your timing belt is 99.99% likely to be broken. If it does turn, you probably have a bad coil (maybe 25 - 50% chance).

Those are pretty good odds in the parts swapping business.

Toyota MDT in MO