Super high-tech green and red balloons were used for a more dramatic effect.... Balloon or plastic bag. Anyone could easily perform the test.
VI. INSPECT VACUUM PRESSURE OF NO. 2 PCV HOSE
1. Disconnect No. 2 PCV Hose a. Use Squeezing motion on clip handles to slide clip up No. 2 PCV hose and remove hose from air cleaner hose.
2. Install Balloon for Testing
a. Use tape (painters tape, masking tape, electrical tape, etc.) to seal port on air cleaner hose. NOTE: It is important that tape seals the port completely. A port that allows un metered air to enter the engine may set a malfunction indicator light (MIL).
b. Attach a balloon over No. 2 PCV hose. Use clip to secure balloon tightly over No. 2 PCV hose. If a balloon is not available, a small plastic bag can be used in place of a balloon.
NOTE: It is important that the balloon or plastic bag
seals tightly around No. 2 PCV hose. If there is not a tight seal around the hose, the inspection will not be performed correctly.
3. Vacuum Pressure Test – Gasoline and Hybrid Engines
a. Start the vehicles engine and allow the vehicle to idle for 15-20 seconds.
Do NOT allow the engine to idle for more than 20 seconds. Damage will occur to the engine oil seals.
Note: For hybrid vehicles, engines can be started by depressing the accelerator pedal quickly 2-3 times or using inspection mode. Refer to TIS for instructions on General / INTRODUCTION / REPAIR INSTRUCTION / INSPECTION MODE PROCEDURE
b. Stop the vehicles engine after 15-20 seconds of idle and observe the condition of the balloon.
c. Use the inspection results chart below (page 8) to determine next steps.
d. Remove tape from air cleaner port previously taped.
e. Remove the balloon assembly or bag
from PCV hose NO. 2 and reintall hose on air cleaner port. Slide spring clip over hose port connection.
View attachment 405827