2002 Pro DX 2.0L
 

I am not sure if there were any threads on this but here is my issue. A couple months ago I started working on my Mazda. I have replaced the fuel pump, the intake hose, spark plugs and coil packs, and just recently the Bank 1 O2 sensor(yesterday). Now when I try to start the car, it acts like it wants to start but it won't. I also get this clunking sound in the engine compartment. I have been reading some threads about the VTCS and how to bypass it. I tried that last night to no avail. Any suggestions would be greatly appreciated as I am completely stuck with no way to get my car to a mechanic(or the money for one lol). Thanks for any help. As a caveat, I bought the car new in 2002 and it only has 48k miles on it