IGNITION CONTROL SYSTEM (Models without E.G.R.) — Component Parts Description (Cont'd)
EF & EC-185prose procedureApplies to GA13DS, GA14DS & GA16DS models without E.G.R.
IGNITION CONTROL SYSTEM (Models without E.G.R.) — GA13DS, GA14DS & GA16DS
Component Parts Description (Cont'd)
THERMAL VACUUM VALVE (T.V.V.)
This thermal vacuum valve is mounted on the front side of the intake manifold. It detects engine coolant temperature by means of a built-in bimetal, and opens or closes the vacuum passage in the thermal vacuum valve.
VACUUM DELAY VALVE (V.D.V.)
The vacuum delay valve is installed in the vacuum control line to the distributor. This valve prevents ignition timing from retarding suddenly when the throttle valve is opened rapidly.
ONE-WAY VALVE
The one-way valve is installed in the vacuum control line to the distributor. This valve restricts air flow to one way.