1994 camry won't start after cleaning under the hood check dist. cap replaced spark plugs sounds like its going to start then doesn't.

Starter is good,battery and connection,Cap is good no cracks.

Sounds like a timing chain , worst case, Would you say it's turning over almost too freely?? Look under your cap, and turn motor over, the rotor shouldn't turn if the timing chain is gone, but may turn if it jumped it's timing. Then you'll have to have a look under the timing cover . let me know if this helps

before u replace the whole dist. have u first checked for fuel delivery on the carb or fuel rail, and then if u have that then check the spark plug wire by removing one while cranking by arcing to metal , if you see spark then dist is good if not then replace, but if dist is good and still no start then check coil pack and or all fuses

Yellow means weak spark should be blue check the coil tower where the coil wire attaches on the coil for corrosion. Also check the spark plugs for wear.

depending on how long it sat, and also on if you had the code cleared when you replaced the o2 sensors could be why the light is lit, Now for the not starting, again depending on how long it sat ,, check the fuel pressure, you need a constant 6 lbs of pressure , also check for fire, pull one of the plugs,, reattach the plug wire to it,, hold it with a pair of insulated pliers, and ground the bottom of the plug to ground, any bolt attached to the motor ( as long as its a metal surface) will do, have someone crank the motor , Look for a nice blue spark arching across the tip of the plug, if it does, you have spark, put the plug back in, if it doesn't, you need to back track the electrical system,, follow the wire back to the dist cap,, remove the cap, check for any burn marks or charred or eroded contact terminals inside the cap,, also check the rotor tip, and contact rotor button in the center of the cap,

try spraying wet start on the cap leads and coil.

you said you repl dist cap that means you don't have a crank sensor you have electronic ing module. remove your elec ing module have it tested most auto parts stores could test your module, or check your coil at the neg terminal. should have power. if not you lost your primary volt from your batt.your secondary power is coming from your electronic ing module from the module to the pos terminal on the coil, when the eng cranks,from the coil to the dist cap , from the dist cap center to the rotor then out to the plugs,this all happen pervided the timing belt or timing chain is ok. the cumbustion chainber needs 3 things , thats fuel, air, and spark.

Simplest,wait till it's dark outside,start the car,open the hood,look where the spark plug wires run,let your eyes get used to it for a minute,if you see a glow along a wire or sparks between them
Put a set on.
Might look inside the dist. cap and make sure the top dist. bushing is still tight,the rotor should not move side to side at all.

test for spark at the 2 plugs

you might have gotten water in the dist. housing. remove the dist. cap and dry it out and then try it again. also dry out you spark plug tubed.