Fuel Emission and Exhaust System
D:01:13
1.
Air Adjusting Screw
2.
Balancing Screw-Left Bank
3. Balancing Screw-Right Bank
4.
CO Adjustment Screw
5. Idle Speed Regulator
LEFT
RIGHT
Fig. 15
IDLE CIRCUIT
The throttle body on the PRV V-6 engine contains
an air adjusting screw (1) and two air balancing
screws (2 and 3). These adjustment screws are not
used on the De Lorean since an electronic idle
speed control system is used. The air adjusting
screw
(1)
should be fully seated to eliminate any air
bypass at the throttle plates.
The idle speed regulator (5) allows the proper
amount of air to bypass the closed throttle plates
during an idle condition.
The CO adjusting screw (4) is used to control the
amount of injected fuel in relation to the position of
the air sensor plate. Turning this screw will
increase or decrease the air-fuel ratio. This
adjustment is performed at the factory and the
access hole is plugged. Fig. 15
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