Acceleration problem Please help me,98 hyundai accent, rough idle, bogs bad on accaleration, will pick back up when accelerator eased off, no power, flashing air/fuel ratio code already changed mass air flow sensor cleaned injectors,new wires and plugs, its much worse after car is fueled any help appreceated.thanks

SOURCE: I have a 1997 Mitsubishi Galant with rough idle

I am having the same issue on Mitsubishi Galant 02. Clattering on acceleration, herky jerky idle. Pulled a code multiple cylinder misfire. My mechanic's diagnosis is bad valve cover gasket causing oil to seap into the spark plugs and bad timing belt, which I have not replaced at 150k miles. I do however know my fuel injectors do need cleaning, he hasn't ruled that out either. Have you pulled any code on it? I have read on engine knock sensor going out on some of these also. Hope this helps some.