Technical Data and Adjusting Values

Timing adjustment: 20° before TDC at 2000 r.p.m. ± 50 r.p.m. Vacuum hoses off.

Spark plugs: Bosch W 175 TR 30 (WR 7 DS) Champion N 8 GY Electrode gap 0,6 mm (.024")

Timing mark:

The flywheel is provided with a notch and the number 20

The control valve is closed when the engine is stopped, idling, or at full throttle. Fumes containing evaporated fuel from the tank flow to the charcoal filter where the evaporated fuel is trapped by the activated charcoal.

With the engine running at part throttle, the control valve is open. Fresh air is drawn from the air cleaner through the charcoal filter and into the intake duct at the air-sensor housing. The evaporated fuel is drawn out of the activated charcoal and burnt up in the engine along with the normal air/fuel mixture.

Vacuum Tank For 1977 Porsche 924

1 Carbon canister

2 Expansion chamber

3 Fuel tank

4 Fuel return line

5 Fuel pump

6 Accumulator

7 Filter

8 Fuel distributor

9 Fuel injection lines

10 Vent line

11 Intake manifold

12 Air cleaner

13 Control valve

14 Safety valve

15 Vacuum control line

Invertebrates For Grade

Fuel system 111 1 "i

A - Mixture control unit

D — Fuel accumulator

E - Filter

F — Control Pressure Regulator

H - Cold start valve

K - Frequency valve

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Vacuum lines

1 — Pressure duct 2- Auxiliary air regulator

3 - Deceleration valve

4 — Intake manifold

6 - Ignition distributor

7 — Evaporation control valve

8 - Waste gate

9 — Turbocharger with pop-off valve 10 — Throttle valve housing

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