Don't know much about cars myself. Just bought this 90 honda civic with 140,000 miles on it. No real problems, seem in good condition. It's a 5 speed, but sometimes, not all the time it seems like it's dragging a little in 1st and 2nd gear. Like gas isn't getting to the motor or something. Any suggestions on what to try or get looked at. (fuel filters)? I put fuel injector cleaner in it. Just want to know what to look for. Thanks