Problemas em Mitsubishi Lancer 95

Hello everyone,

I am new in the forum, my problem is that my Mitsubishi Lancer 1,300 cc 1995 Model Sometimes when I turn it on I have to press the accelerator in the back More than I had the accelerator in the background, the engine did not take strength and when slowing it down a little went out and began to throw a gray smoke that smelled a lot of gasoline, as I could not move it I had to enter it pushed. Alguma idéia do que está acontecendo com o carro? Alguém pode me ajudar? Bem, não tenho muita confiança no mecânico que é supostamente certificado em Mitsubishi.