One intake runner getting HOT? Why?

[Speed metal]

Car still running crappy.... Noticed that one if the runners was much much warmer than the rest after just a short period of running.actually too hot to touch! The rest were lukewarm at best.Whats up?

[strudelwagon]

Speed, did you do a compression test ? I can't remember from the world thread.
SW

[Speed metal]

Not yet. Im pretty sure the motor is boned!

[RobSime]

Bad valve adjustment. Valve stuck open... something like that.

[etcmss]

valves or timing
exhaust not fully discharged when intake opens. the remaining exhaust pressure release will heat up the intake.