Hi everyone! Just picked up a 1991 Mitsubishi U42T for my son. Once I bought it the owner mentioned that it runs rough when warm and smokes! I didn't think this would be a big deal, but it has me scratching my head. After searching the forum I couldn't find anyone with this exact problem. Previous owner claimed to do a compression test and compression was "good" . I purchased the Mitsubishi mini cab and Bravo 3G83 service manual, and waiting for it to arrive. I plan on adjusting the valves, and changing spark plugs. Am I headed in the right direction? I also noticed a solenoid on the carb was unplugged. When I plugged it in it ran worse! Thanks for your help!