I won't attempt to address all the issues you brought up. (I'll share!) Your belt tensioner definitely needs to be replaced. There's enough wobble there that the belt could come off, especially during acceleration or at higher RPMs. Second, if your cooling system continues to overheat, do a chemical check of the coolant to see if exhaust gases are present. Your head gasket could be leaking only between the cylinder and the water jacket, and you won't see evidence of oil in the water or water in the oil. Third, as you said it is smelling rich, buy or borrow a scanner that can read live data in the engine and check your fuel trims - short term and long term. If the total fuel trim for a given bank is more than 10 (i.e., if bank 1 short term is 8 and bank one long term is 9, totaling 17), you have to find what is causing the PCM to feed extra fuel into the engine. Often this is a vacuum leak.
You didn't mention a check engine light or codes. Use the scanner to check for codes and correct as necessary. If you need help on the codes, be sure and state the code exactly -- not what the description says. For example, give the code "P0442" instead of "evaporative emission system problem".
Thank you I will try to locate a scan tool that will provide that kinda data and won't totatlly break the bank lol.
As for check engine lights. It's been on since day I purchased it. Didn't find this out untill the drive home in which seller responded with "yeah I thought I fixed that" after my 20 minuet drive half way home. We talked a bit more and he actually drove to me to give me a new charcoal cannister and some other part I can't even locate on the vehical but it's a smaller looking plastic tank resembling a smaller version of the canister.
Anyways I replaced the charcoal canister and the hoses and the purge valve. Never had a actual scanner to clear clear the stored codes only a 20-50$ one and right now that's M.I.A since I let someone use it then when I got it back I wasn't paying attention to where I put it now it'd gone lol. So I'll go autozone and get the codes read and report back for now and work on buying a real scanner tool or borrow someone's. I appreciate the response and time you took writing it.