ENGINE MECHANICAL
Compression Check
14A-GEl
EM-4'
COMPRESSION CHECK (4A-GEJ
NOTE: If
there is IlIck of power. e_cessive oil consump
tion
Of
poor fuel economy. measure the compression
pressure.
1.
WARM UP AND STOP ENGINE
2.
DISCONNECT SOLENOID RESISTOR CONNECTOR
3. DISCONNECT COLD START INJECTOR CONNECTOR
4.
DISCONNECT DISTRIBUTOR CONNECTOR
5.
REMOVE SPARK PLUGS ISee Pig. IG-201
6.
CHECK CYLINDER COMPRESSION PRESSURE
tal
tnset1
e compression gauge into the spark plug hoie.
Ibl Fully open Ihe throlile.
(cl While cranking the engine. measure the compreuion
pressure.
NOTE:
Always use a fully charged battery to obtain
Inginl re'lolution
01 250
rpm or more.
let)
Repeat steps (a) through Icl for each cylinder.
CAUTION: Thi. m •
.,urem.nt
mu.t
b.
done in
.
.
.... ort
•
tim
• •• ponible.
C
o
m
pr
,"
i
o
n
pr.ssure:
12.6 kg/cmf (179
Pit
1,236 kPe)
M
i
n
im
u
m
p
,'
n
u
'
l
:
10.0 kg/cmi (142 p.l, 981 kP,)
Ol
f
f
l
••
nc. b.twlen
••
ch
cylinder:
1.0 kg/cmi 1'4 pil. 98 kP.'
or
I.n
Ie)
II
the cylinder compression in on. or more cylinders
i. low, POI.W I Imall a
m
o
u
nl
of
engine oil into the
cylinder through Ihe spark plug hole Ind repeat steps
Ie) through
Icl
for the cylinder
with
low compression
.
• 11
adding oil helps the compreuion chlnces Dr.
Ihat the piston rings andlor cylindlr bore are worn
or damaged
.
•
If preS$U1'"e stlYS low, a 'Ial'll mly
be
sticking or
leating improperly, or there may
be
leakag. Plst
the glsket.
7.
REINSTALL SPARK PLUGS IS
••
pig.
10-211
Torqu.: 180 kg-em (13 ft-Ib. 18 N'm]
8.
RECONNECT DISTRIBUTOR CONNECTOR
II.
RECONNECT COLD START INJECTOR CONNECTOR
10. RECONNECT SOLENOID RESISTOR CONNECTOR
