Mazda 626 1981 - 01 A-13

lA
Fig.1A
-
47
Fig.
1A
-
48
Three way
solenoid
valve
Intake
ma
nif
old
vacuum
Carburetor
Intake
manifold
Primary
throttle
valve
Flg.1A-49
IA:
13
1A-D.
DECELERATION
CONTROL SYSTEM
1A-D-1.
Air By-pass Valve
a. Checking air by-pass
valve
1. Disconnect the air
hose (air by-pass valve air
control valve) from
the
air by-pass valve.
2.
Start
the engine and run
it
at
idle.
3.
Place
the
fing
er
over the air by-pass valve outlet
and make sure the air flows
out
from
it.
4.
Increase the engine speed and quickly release the
accelerator.
The
air should
stop
flowing
to
the valve outlet
for a few seconds after releasing the accelerator.
If
the air stops flowing for more than
three
seconds
or
does
not
flow
out
at
all,
replace the valve.
b. Replacing air by-pass valve
I
. Disconnect the vacuum sensing tubes
and
the
air
hoses from
the
air
by
-pass valve.
2. Remove the
nut
attaching the valve
to
the bracket
and remove
the
valve.
Install
in
the reverse order
of
removing.
1A-D-2
.
Throttle
Positioner
System
with
Air
con.
only
Engine speed
unit
e
Air
con.
switch
···~1
Ignition
coil