sup guys..i recently noticed smoke from the engine in the area of the rear valve cover, so i took it apart & replaced the rear valve cover gasket

. put it back together and now I have what looks like black smoke out the exhaust & more smoke from the engine rear area than before

. The car starts & drives, but drives like theres an exhaust leak. Check engine light is on, but when i just about floor it the light goes off, than comes back on when i let off the gas(while driving, not at a stand still) there was also a broken electric/vacuum connector mounted on top of the rear valve cover i replaced, got it from a camry at the junkyard with a blown engine. I re-checked all hoses, gaskets, connectors 3 TIMES & everythings good. Also the smoke isnt as bad if i have the front on ramps but if it was just residual than the car would run fine. Engine code was 24, intake temp sensor, but all i reconnected was all the electric connecters.Sorry for the long thread but i didnt wanna miss nothing, help please! thanks