rough cold start and idle.
Hello everyone, new to the forum! I own a 1994 z28 Camaro. I was hoping y'all could help provide some answers for the problem I'm having with the old girl. When I start my car cold it struggles to fire sometimes cranking for almost thirty seconds before firing or even the occasional backfire that terrorizes my neighborhood. Once the car is running it idles poorly smelling of fuel, misses, and bogs under heavy throttle. But once the engine warms up and the car gets up to operating temp it runs perfectly fine, and when I shut it off after the engines warmed up, it will start right up with no hesitation. Can anyone tell me what is wrong? Bad opti? I was told maybe the coolant temp sensor on the water pump? Some insights would be greatly apprecitated!