Mazda 121 Workshop Manual page 205

TROUBLESHOOTING GUIOE
F
INSPECTION
acTtofl
? l
ls resistance ol igntion coil OK?
c7 page c-20
Resi6tance (et 20.C 168oFl):
Primary coil winding........ 0.58--"0.a49
Secondary coil whding.... 9.6-14.4 ko
SECONDAFIY COIL
'12 ls engine compfesson co(ect?
c? page B-10
Engine clmpresslon:
1,030 kPa {10.5 kg/cm' , 149 psl}-300 rpm
N o Check engine condition
t? page B-'10
.Worn piston, pislon rlngs or cylinder
. Deteclrve cyiinder head gaskel
. Distorted cylinder head
.hproper valve seat ng
.Valve stickinS in guide
1 3
Change iuel; does condition improves?
Change tuel to another brand
Try known good ECU and see il driv'
F-49