Mazda 121 - Fuel Pressure Hold Inspection

F
FUEL
SYSTEM
22-30
(2.2-3.r,
16-22)
PUMP
CONNECTOFI
PRECAUTION
Fuel
Pressule
Release
and
Servicing
Fuel System
Fuel
in the
fuel system
remains
under
high
pressure
when the
engine
is not running.
a)
6efore
disconnecting
any
fuel line'
release the
tuel
pres-
sure
lrom
the
tuel system
to
reduce
the
possrbrlity
ot
Iniury
or ire.
1. Start
the engine.
2. Remove
the
rear seat
cushlon
3.
Disconnect
the
fuel
pump
connedor'
4.
After the
engine
stalls,
turn otf
the ignition
switch.
5. Reconnect
the
tuel
pump
connecior
and
install the
rear
seat cushion.
b)
Use a
rag as
protection trom
tuel spray
when disconnecf
ing the
hoses.
Pluo the hoses
atter
removal.
c)
Wh;n
inspecting
the
fuel system,
use
a suitable
fuel
pres-
sure
gauge.
Caution
.
Instatl
hose
clamPs
to secure
lhe fuel
pre$sure
gauge
to the
fuel lllter
and
the tuel
main
hose to
pre-
vent luel
leakage.
SYSTEM
OPERATION
Fuel Pressure
Hold
lnspection
Waming
.
Belore
performlng
the
followlng
operation,
release
the tueipEssure
tlam
the
tud system
to .educe the
posslbility
ot
inlury
or lire.
(Reler lo above')
1. Disconnect
the
negative
battery
cable
2. Install
a fuel
pressure
gauge.
3. Connect
the negative
battery
cable-
4. Connect
the diagnosis
connector
terminals
F/P and GNq
with a
jumper
wire.
5.
Turn the
ignition switch
ON
lor l0
sec' to
operate
the fuel
oumo.
6.
iurn ihe
ignition
switch OFF
and disconnect
the
jumper
wire
7. Observe
the fuel
pressure
alter 5
min..
Fuel
pressure:
More than
l4T
kPa
(1.5
kg/cm',21
psi)
. /4,-<'-\\.
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X.. \
oteelosts\
CONNECTOF
F-88