volvo Workshop Repair Guides

Volvo Workshop Service and Repair Manuals

Pulsed Secondary Air Injection|Description and Operation|Page 1350 > < Pulsed Secondary Air Injection|Description and Operation
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Fig. 59 PULSAIR SHUT-OFF VALVE

SHUT-OFF VALVE
Only carburetor engines of later models have a shut-off valve.
The valve disconnects the pulse-air system at a high vacuum in the intake manifold. This prevents exhaust "puffs" from occurring when shifting gears or
braking with the engine. Fig. 59.
If necessary the valve can be added to older engines equipped with a carburetor (see "COMPONENT REPLACEMENT AND REPAIR
PROCEDURES" > "PULSAIR").

Pulsed Secondary Air Injection|Description and Operation|Page 1350 > < Pulsed Secondary Air Injection|Description and Operation