Problem with Peugeot 306

Aber the taes are mechanics of pills to be more esactos The tolerance is 0.10 Admission and 0.15 escape but I don't know what means accounts to check them because it is done cold with the lid of Valancines removed and with a wheel raised and making the crossing of valves in the first cylinder the room is measured. Lucas or Bosh, carries a valve with a cable that usually goes to the thermostat if the cable is cold in cold the valve is bad test and tell me