Honda Civic not running right?

First of all you need to change mechanic because the one you have now is a parts changer...the one thing you need is to do a process of elimination. An engine needs 3 basic things to run. Air, fuel, and spark. Air is all around us so what's left is spark and fuel. If you have an automatic transmission you can do what you can do what is known as power brake. Put your car in drive and firmly apply the brake with the parking brake on accelerate the car to about 1500 to 1600 rpm and see if you feel the jerking. Only do this sorry about 5 to 10 seconds at a time. What needs to happen is you need to figure out if the problem is fuel or spark...the biggest problem is usually someone has installed the wrong spark plugs in the engine. If you don't have the factory sparkplugs and not some B.s spark plug that some of these mechanic like to use...I can almost guarantee that's the problem. If the correct spark plugs are being used then you must figure out what cylinder is causing the problem...it could be a bad spark or a bad fuel injector. Make sure you find out what cylinder is causing the problem. And the narrow it down from there...good luck but what has happened over the years most of these mechanics have depended on a computer to tell them what's wrong with the car that when it comes time to do some old fashion diagnosis most mechanic have for gotten how to do it...I hope this was helpful