2011 Volkswagen Jetta SE 5 Cyl 2.50L
Chugging or shaking when start in cold
My car when I start it, it starts and then chugs or shakes with darker Smoak coming out of tail pipe. Then it either continues to start and is fine or stalls. The exhaust smells too and I just got new spark plugs and air filter and oil change. When I start it back up after stalling it is normal and drives good. Just passed emissions test.