B Series Truck 2WD L4-2555cc 2.6L SOHC (1987)
Canister Purge Control Valve: Testing and Inspection
No. 3 Purge Control Valve
Fig. 37 Testing No. 3 purge control valve.
1.
Remove No. 3 purge control valve.
2.
Connect suitable vacuum pump to valve, Fig. 37.
3.
Blow through valve from port A and ensure air does not flow from port B when applied vacuum is less than 2.60-4.17 inches Hg.
4.
Apply a vacuum of at least 2.95 inches Hg on 626 models, or 4.17 inches Hg on B2600 models.
5.
Blow through port A and ensure air flows from port B.