Pickup 2WD L4-155 2555cc 2.6L SOHC VIN E 2-bbl (1988)
Fig. 17 Purge control valve.
PURGE CONTROL VALVE
The purge control valve, Fig. 17 remains closed during idle to prevent excess HC emissions caused by fuel vapor venting into the intake manifold. When
throttle port vacuum exceeds a pre-set level the purge control valve opens venting fuel vapors from the carbon canister into the intake manifold to be
burned.
Fuel Filler Cap Operation
FUEL FILLER CAP
The fuel filler cap, Fig. 41 is equipped with a relief valve to prevent the escape of fuel vapors to the atmosphere and to prevent the colapse of the fuel
tank under negative pressure.
