Hey y'all! I've got a 1988 4d 5 speed gold Honda Accord. I've had the oil & its filter changed out, new air filter, cleaned throttle, new tires, new battery, starter wire, new spark plugs & their wires, but sometimes she still has some trouble starting. She'll also just idle weirdly. Either around 2k, but will go up to 3k & stay there, but will also drop to 1800. My mechanic says her carburetor is just bad, & since everything else is great I wanna keep her going as long as possible. Any suggestions for an engine swap?