hey im 19 years old. i have a mitsubishi eclipse gs-t. ok so i got the car like a year ago. my friend said that their was this thing called sea foam that cleans out your engines carbon and the cylinders. i forgot what all he said it cleand, but we put some of that sea foam stuff on my gas tank my oil and the vacume lines. it was a small bottle it wasnt that much. well we put it in. my car was smoken out alot of white smoke and had no power at all for like 5 min. but when it gained all the power back it was running amazing better before we added the sea foam. so we took it out that night it was running at its best. but the next day, my car started to shake. as soon as it gets to about 2500 rpm it shakes and wount pick up speed. you have to let go of the gas and floar it again so it can pick up speed. but it will only pick up speed for like 2 seconds then start to sheke again. or if its an a total stop then step on the gas. it will go up till it gets to 2500 rpm. then it will shake again and strugle to pick up speed. or if you floar it and keep it floard it will shake pick up speed and shake all over again. when it shakes the rpms go down. like if the shaking is stoping it from picking up speed. does anyone know what it is? was it the sea foam that messt it up. does it sound like something serious? i have tooken it to like 3 mecanics they dont know whats causing it. i replaced the spark plug wires to 10.5 mm ones. and i chainged the sparkplugs to ngk platinum. i put a k&n air filter and it still wount stop doin the shaking. doe anyone know what it might be?