ok heres my HUGE problem...I have a 91 240 ka24DE 5-speed.......Ok sometimes when i start my car i put it in gear and drive..Now here is the Huge problem....SOMETIMES it will studder when it accelerating..its like a duh duh duh duh till about 4000 rpms then it drives fine...This problem happens unexpectantly...sometimes i can drive my car for hours and it will be fine other times its a soon as i start my car...it use to do this once and a while but now it has seem to ge more freguent...i just changed the spark plugs, wires, and fuel filter...like i said it only does this sometimes... IF ANYONE CAN HELP I WILL BE SOO HAPPY..

 

I'm just a n00b, but couldn't that be a clutch problem?

 

Do u know if ur fuel pump is working properly?

Check ur injectors too,there might be a problem with them!
Let us know the problem of the car in a more detailed way .