I was wondering if anyone could help me figure out whats going on with my yota. I bought this truck a few weeks ago with a really rought idle, i took it in and the mech said that my intake manifold gasket was leaking and the manifold itself was warped. so 400 bucks, a resurfaced manifold, new air intake manifold gasket, and adjusted valves later ive got black smoke in my exhaust, fuel odor, and really bad fuel milage. But heres the odd part, it will run really rough for about 20-30 minutes after warm up then the problem will just go away and everythings back to normal. Ive checked the compression (fine), mech said the carb was working fine. i looked in the sight glass and the fuel level was really low when the engine was cool. i havent checked the fuel level at operating temp ( and honestly i dont know if the fuel level should differ). Also i havent taken a look at the spark plugs to see what they look like (when i do, what should i look for on the plugs?) anything will help thanks,
-manuk