Hello I am having a problem with my car its a 1991 twin turbo factory with 86K and I think its the fuel line. A couple of months ago I filled my car with gas and left the station. As soon as I left the car wanted to stall on me anytime i left my foot off the gas. I was able to drive as long as i kept pressure on gas pedal but the ride was extremly rough and rpm would not go above 4k. i had 2 miles to go and got where i needed to. i put some octane boost in the car and then tried to get it going but it would not work. I let it sit overnight and then the next morning it started up and i got a huge cloud of smoke from the exhaust, i pumped the gas several times to keep it from stalling and then after a minute let it go and the car stayed on by itself. it drove rough for about 1/4 mile then was fine. since then i have had some trouble starting it where the car cranks and cranks like normal but does not kick right over. right now it will not kick over at all. i just added the fuel injector cleaner to 1/4 tank of gas i have left. i am trying to let is break up whatever is in there. does anyone else know what this problem might be and a more effective solution. its a 1991 twin turbo factory with 86K