Hey everyone. I am having trouble with my 7.3. I had a problem with the truck acting up and shuting down. I got the code for the p0270. I took the valve cover off and check the harness for any split wires and everthing good. Put a injector a test injector in it. Seem to fix the problem and drove the truck everthing was going good then it stumbled a little. Code came back on but let the truck sit and idle it started running good again. Used my scanner and did a test while truck is running nothing injector related but exhaust valve trouble code And did the key on engine off came up with the p0270. Truck runs good when it idles and drives fine around the block. Everything was pluged. Im kinda of stumped. Any thoughts thanks.