Mazda 323 Workshop Manual Supplement page 150

TROUBLESHOOTING GUIDE
F2
]sTFP 1
INSPECTION
ACTION
I
Aerator depressed ful ty
rminal 1F
voltage
: SELF TEST
ignition timing: BTDC 10 = I*
8
Check for correct fuel line pressure at idle'
Yes Check
if fuel line pressure decreases
when accelerating quickly
Fuel
line
pressure:
265-314
kPa (2.7-3.2 kg/cm', 38-46
psi)
(vacuum hose to pressure regulator
dis-
connected)
4 If decreases check fuel pump
maximum pressure*
If OK, check fuel line and filter for
clogging
4 If no decrease, go to next step
NO
Low pressure
Check fuel irne pressure while pinching
fuel return hose
4 If fuel line pressure quickly in-
creases, check pressure
regulator'
e If fuel lrne pressure gradually in-
creases, check for cloggrng be-
tween fuel pump and pressure
regulator
If not clogged, check fuel pump
maximum pressure*
High pressure
Check of fuel return line
is
ctogged
4 If OK, replace pressure regulator
e If not OK. replace
- _
* Refer to 323 Workshop
Manual [I 203-1 O-89F
(Europe), or 1204-lU-89F (Australra)].
FZ-33