2 weeks ago my car broke down, I replaced a cracked ignition coil and the ignition control module. No luck. Still no start. Took it to a shop, 641 dollars later they replaced the crank sensor for me. Starts and ran okay for 3 days, now I'm having bad misfire in cylinder 3 and 6. No spark whatsoever. I replaced the already new coil again, still no luck, put another ignition module on, still no luck. Any ideas before I burn this car

There's also the camshaft position sensor, maybe the problem to start with? Car may of been torched by now, hmm.