**Help wanted**
Anyone here know anything about a 2005 lancer 2.4L 4g69. Did have broken head gasket from overheating caused by broken radiator (didn’t run when purchased). We have since machined the head, got new gasket, radiator, valve stem seals, done spark plugs and coil packs. Car now runs & drives. Has rough idle (800rpm) - with misfire. When driving feels normal. It is at normal running temperature (not overheating) cooling system seems to be building up pressure. Thermostat is working. No white smoke out of exhaust. Any ideas or recommendations?