When performing cylinder leakage tests, the following tips might be helpful:
Remove all spark plugs to allow easier rotation of the engine. (If this test is
done after a compression test, the
plugs should already be out).
Perform the leakage test on all cylinders, not just the problem
cylinder.
Fig. 1: Identifying Heater/Air Conditioner Servomotors Components Location
Servomotor, defrosting
Servomotor, footwell, rear cabin right
Servomotor, ventilation, front right
Servomotor, stratification, front right
Servomotor, stratification/shut-off, rear cabin, right
Servomotor, footwell, f