Hi there guys, i`m relaying on your expertise to resolve a puzzle with my car, after replacing few vacuum hoses and getting some vacuum leakings in the engine area the car begon to smoke a lot (black, really dark black like a russian tank) when trapping on gas pedal, take a eternity to get on revs even with gas pedal fully pressed and just after 2500 rpm begin to accelerate like before but not before covering the whole street in a black cloud and using a fuel tank in about 200 miles, it even continuos smoking after the 2500 rpm, i can clearly see it from the mirrors, any ideas what can be happenning? thanks for any help.