Mazda 121 - Page 190

F
TROUBLESHOOTING
GUIDE
INSPECTION
ACTION
7
ls fuel
line
pressure cotrect at idle?
c?
Page
F-94
Frel lih6
pr$sure:
235-275
kPa
(2.4-2.A
kg/cmz, 34-40
p3l)
Check
fuel
line
pressure
while
pinch_
+
ll fuel line
pressure
quickly
In.
creas€s,
check
pressure
regulator
+
ll iuel line
pressure g€dually in-
creas€s,
check
tor clogging
be_
tween
luel
pump
and
pr€ssure
lf not clogged,
check
iuel
pump
maximum
prsssure
E7
Page
F-91
I
Connect System
Selector to diagnoss
connector
and
set Test Switch
to
"SELF
TEST
ls ignition
liming correct
at idle alt€r warm_up?
(7
gage F-€2
lgnition llmlng:
BIDC
16
+
1'
Go
to nexl step
No
Adjusl ignrtion
system
r'
Pag€
F-62
9 Disconnect
water
lhermosensor conneclor
Does englne
condition
imprcve?
Replace
wat€r thermosensor
No
Try known
good
ECU and check
il
10
ls enoine comoression
correcP
-
.7
page
8-10
Engine
compression
(llhlmum):
I,O3O kPa
(10.5
kgL/cm', 149
psl)-3lx)
rpm
Check
engine
r?
Page
&-10
11 ls slrong blue
spa
visible al each d sconnecled
hgh'tension
lead?
c-----,--
\-\
<72oNl #
/
/
Check
high'tension
lead
.7
page
e-23
4
lJ OK,
check dislrlbulor
cap and
rotor
F
page
G-23
+
ll not OK,
replace high tensron
12 Are spark
plugs
OK?
s
pago
G-19
WEAF ANO CAFiBON BUILDUP
(0.039-o.043
BUANS
DETEBIOBATION
Try known
good
ECU and check
NO
F-34