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Porsche 912 E - Page 83

Porsche 912 E
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24
Fuel
System,
Fuel
Injection
CHECKING
~OLD
START
VALVE
1.
Connect pressure gauge to injector supply
line.
2.
Disconnect wire from terminal I of ignition
coil.
Operate starter briefly to build
up
fuel pressure.
3.
Pull plug off
of
cold start valve.
4.
Connect
B+
and ground to cold star
valve.
5.
Watch pressure gauge - pressure must drop
slowly.
Replace valve
if
necessary.
CHECKING
COLD
START
VALVE
FOR
LEAKS
1.
Pull plug off of cold start
valve.
2.
Take cold start valve off
of
air distributor,
but
leave
it
connected to the injector
supply
line.
3.
Pull wire off of
terminal!
of ignition
coil.
4.
Operate starter, observing cold start valve
for
leaks.
Replace valve
if
necessary.
CHECKING
TEMPERATURE
SENSOR
II
1.
Disconnect plug.
2.
Connect ohmmeter between temperature
sensor and ground and read
meter.
Specifications:
0.5
to
2.5
kohm (dependent
on
temperature, higher temperatures =
less ohm).
Reference value:
apgrox
2.5
kohm
at
approx
20
C/68°F
engine
temperature.
Replace sensor
if
necessary.
24-
8
Checking Cold Start Valve, Checking Cold Start Valve
for
Leaks
Printed in
(';P.rm,nv

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