Mazda 121 Workshop Manual page 212

F
TROUBLESHOOTING
GUIDE
Does if fuel lroe p€ssure decrease
when acceleraling qulck\,
+ ll decrcas€s, check lor clogging
b€trveen luel pump and pressure
regulator
4
ll not decrease, go to next step
ls fuel line presswe correct al idle?
t? PaEe F-94
Fuel line pres3ure:
235-275 kPa 12.4-2-a Wlcm', 3!t-40 psl)
Check fuel line pressurc while pinch_
+
It fuel line prcssure qulckly n_
creases, check pres€ure regulalot
+
ll fuel line pressure gradually in-
creases, check lor cloggrng bs
tween luel PumP and Pressure
regulator
lf not clogged, check luel PUmP
maximum pressure
r? Page F_91
ls cooling system OK?
.Themostat .7 Page E-8
. Et€ctic cooling lan .7 Page E-1 1
.Rad,ator
.? page E-7
Replace EcU
1:7 Pege F-112
Try known good ECIJ and check il conditon
Change tuel lo another brand or use
F-56