Stuck Valve? Options

[mark95turbo]

OK. So im pretty sure ive got a stuck valve. I first heard it when I was coming home from work this afternoon. It sounded like something rattling or something hitting against the radiator fan. Well I got her home and started listening around. I took a short piece of 1\4ID pvc tubing I had and held it against my ear and the other end against the motor and other various parts under the hood and tried to track down where the sound was coming from. It seemed to be loudest right around the timing belt cover so I took the top part of the TB cover off and it seems to be coming from behind the cam gears. So I'm assuming that I have a stuck valve. The only thing that confuses me is that the car runs fine and at higher RPM's the noise goes away. Does this sound right? I noticed on the drive home that I only hear the noise at certain RPM's but I never truely got on it and barely got above 0 PSI. I of course havnt driven the car since. I'm gonna run some valve cleaner through it tonite to see if that makes any difference. Anybody have any suggestions\advice? Thanks!

[mark95turbo]

Oh yeah. This is deffinately not lifter tick. Out of the four DSM's ive owned all have had lifter tick except this one. It has never ticked except for the few weeks when we had sub-zero temps. The motor only has less than 40K on the top end and under 20K on the bottom end. Like I said, the car runs great and the noise goes away above ~2800 RPM's. I ran some Lucas fuel system cleaner through it and still nothing.