I decided to do the valve adjustment at 11800. I got things apart but found exhaust valves on cylinder 1 and 4 were not opening that I could get a gauge to them. I set the rest of the valves and put things back together. When I start the engine it revs twice and stalls out. It is throwing a code po113 which is the air temp sensor. I replaced the sensor no change. I am getting 5 volts at the sensor. Looking for a direction.