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check if you getting spark at spark plug if no then replace cap and rotor and possibly plugs and wires if that doesn't solve it you may need distributer.if you are getting spark then check if you getting fuel pull off fuel line where it goes into motor and turn over
Before you threw a bunch of parts at it maybe you should at least see if it has spark. If it doesn't have spark then the crank sensor and coil pack would be appropriate. If it is not getting fuel then the fuel pump, filter, etc. would be the way to go. So see if there is spark, do this by pulling a spark plug and see if there is spark out the end with it plugged into the wire and cranking it over. If there is spark put all this back together and squirt some fuel into the throttle body while cranking it over, if it tries to start but doesn't try to start on its own without squirting fuel in it then the fuel pump is bad. How many miles on it? Possibly the cam timing is off. Maybe take a compression check and see if the cam is out of time.
A miss or mist? If it is mist, possibly radiator hose, heater hose, oil sending unit. What kind of fluid is it? If it is a miss then first thing would be change the spark plugs if they haven't been changed in a while. If it keeps missing after that try pulling the spark plug wires one at a time with some spark plug wire pliers. If you pull one and it doesn't make a difference then that is the cylinder that isn't working. Put a spark plug in that wire and see if it is firing by grounding the base of spark plug and watching it. If it doesn't fire first try putting on a spark plug wire, if that doesn't fix it, you must have a bad coil pack. If you have spark when doing the test above then maybe an injector that isn't working. Please rate my answer so I am rewarded points for it.
Put a spark tester on the spark if possible and see if it has spark. Some vehicles have Coil on plug applications which makes this impossible, but if it has spark plug wires this will work. If you have spark, then go to step 2. Spray starter fluid into the throttle body to see if the vehicle starts or wants to start. If it starts...not timing. If it wants to start or even back fires...it is the timing. If it doesn't do either, consider the cam/crank sensor. These will effect the spark as well, so if you don't have any spark, not only consider the CS/CRK sensor, but look at the module and coil pack...good luck.
Anything done to car, or happened recently that might affect this? If starter fluid doesn't work, and starter is cranking normally (too fast may point to a timing belt broke, too slow may mean battery run down and not producing sufficient spark), there's still a problem in your ignition. Pull a sparkplug or two. After cranking a little they should be wet with gas. Check for compression while a plug is out: hold your finger over plug hole when cranking. You should feel pressure buildup and release over and over as long as cranking. A properly timed engine needs spark, fuel, and compression to start. Keep reviewing your procedure. Something is not right. You may want to have the computer scanned for possible trouble codes. Check plug wires for proper routing. Were plugs gapped right?
AWESOME a real camaro problem. backfire. strong odor of gas because the gas isn't getting burned caused from backfire. backfiring because the spark isnt sparking when its supposed to. problems could be bad spark plug wires , bad plugs , bad ignition parts. your gonna need to check wires for bad spots, check ignition coils and stuff like that. if all that stuff is ok, then your problems have to do with inside the engine. jumped time etc.
you need to determine if you have spark or not. if not, is the cam turning? does it sound normal whan turning over? take the oil filler cap off, and see if cam turns while someone is cranking engine. if not, the timing belt is broken. if you do have spark, then the engine isnt getting fuel. you may need a shop to get further into it.
IF it tries to turn over then its not the starter. If it doesnt then get a starter.
IF it isnt the starter make sure you are getting fuel to the engine. If you are then disconnect one spark plug from the wire and put a flat head screw driver in the plug and put it on a piece of metal from the body of the vehicle like where the hood latches. Make sure the paint is scraped off a little. Ask someone to try and start the vehicle. If you dont see spark then you need a distributor if you do then try new plugs
Make sure you did not get any wires pinched between engine & bellhousing this is common.If it started and ran before doing clutch, nothing you did should change that! Are all wires back on starter motor?