Mazda 121 - Page 186

F
TROUBLESHOOTING
GUIDE
STEP
INSPECTION
ACTION
6
Connect
Syslem
Sel
ignition
timing correr
lgnition
tlming:
BI
ector to diagnoss
conn€ctor
to
'SELF'IEST"|
is
coffecl
ri at idle aiter
walm up?
.7
page
F-62
16
.-
/fEN
Adtust
gniton timing
17
Page
F_52
t,
GNo
//
-tfi"
INOICATOF
/
D
tl.r9*
7
ls luel Ine
oressure
corrccl al idle?
c7
Page
F-94
Fuel
line
pressure:
235-275
kPa
12.4-2.A
rg/ctn',
34-40
psi)
{vacuum
hos€
to
pte*3ure
regulstor dls-
connected)
., .ih,
(\
)
""'*Y"'-94u9:-lwlllK;/
-\-,aJ.6V.]Ly.V
/
FUET FIITEF
Check
fuel
line
ptessure
while
prnch_
+
ll
fuel line
pressure
quickly in_
creases,
check
Pres$re
regulalor
+
I fuel
line
prcssll|e
sradually
In_
creases,
check
lor clogging
be
tween
fue
punrp
and
pressure
regulatot
It
not clogged,
check
fuel
PUmP
maximum
pressure
I
Page
F-91
I
ls thero an
bakage ai
intake air syslem
com
9 ls eno
ne cornpression
correcl?
-
e
paEe
B-10
Ensine compression
(r
!nimum):
t,o3o tPa
Oo.5
kg/cm'.
149
Psi)-300
rPm
Try known
good
ECU
and does
con
Check
lor cause
F
Page
B-lO
F-30