This all started about a month ago when I had a broken lifter. The car ran fine w/ the broken lifter, it still was fast and smoked the tires... it just made alot of noise. I replaced all of my lifters to be safe and ever since, the car has no power what-so-ever and its using alot of gas and you can smell the gas very strong coming from the tailpipes.. and sometimes it even has blue smoke coming from the tailpipes. And it didnt do any of this til I replaced those lifters. If it helps any when I installed the lifters all I did was pull the old lifters out and drop some used ones in I had sitting in my basement from a previous motor. Then I tightened the rocker arms down until I couldnt turn the bolt anymore.