1993 Mitsubishi Truck rough idle

Engine Mechanical problem
1993 Mitsubishi Truck 4 cyl Two Wheel Drive Manual

my truck has rough idle but its fine when you give it gas. i check all the spark plugs, pcv, mass air flow sensor, spark pulg wires, i adjusted the timing but it never got better so i put it back where it was frist at. heres my screen name ryn62188@aol.com

thanks
Ryan