± ENGINE MECHANICALENGINE (1ZZ±FE/3ZZ±FE)
14±3
AVENSIS REPAIR MANUAL (RM1018E)
(3) While cranking the engine, measure the compres-
sion pressure.
Compression pressure
1,300 kPa (13.3 kgfcm
2, 189 psi)
Minimum pressure: 1,000 kPa (10.2 kgfcm
2, 145 psi)
Difference between each cylinder:
100 kPa (1.0 kgfcm
2, 14 psi)
NOTICE:
Always use a fully charged battery to obtain engine
speed of 250 rpm or more.
Check other cylinder's compression pressure in the
same way.
This measurement must be done in as short a time as
possible.
(4) If the cylinder compression in one or more cylinders
is low, pour a small amount of engine oil into the cyl-
inder through the spark plug hole and repeat steps
(1) through (3) for the cylinders that have low com-
pression.
HINT:
If adding oil helps increase the compression, the piston
rings and/or cylinder bore may be worn or damaged.
If pressure stays low, a valve may be sticking or seating
improperly, or there may be leakage past the gasket.
10. INSPECT CO/HC
(a) Start the engine.
(b) Run the engine at 2,500 rpm for approximately 180 seconds.
(c) Insert CO/HC meter testing probe at least 40 cm (1.3 ft) into the tailpipe during idling.
(d) Check CO/HC concentration at idle.
Idle CO concentration: 0 to 0.5 %
Idle HC concentration: Applicable local regulation
If the CO/HC concentration does not conform to specifications, perform troubleshooting in the order given
below.
Check heated oxygen sensor operation.
See the table below for possible causes, and then inspect and repair the applicable causes if
necessary.
±
ENGINE MECHANICAL ENGINE(1AZ±FE)
14±103
AVENSIS REPAIR MANUAL (RM1018E)
(3)While cranking the engine, measure the compres-
sion pressure.
Compression pressure:
1,300 kPa (13.3 kgf/cm
2, 189 psi)
Minimum pressure:
1000 kPa (10.2 kgf/cm
2, 145 psi)
Difference between each cylinder:
100 kPa (1.0 kgf/cm
2, 14 psi)
NOTICE:
Always use a fully charged battery to obtain engine
speed of 250 rpm or more.
Check other cylinder's compression pressure in the
same way.
This measurement must be done in as short a time as
possible.
(4)If the cylinder compression is low, pour a small amount of engine oil into the cylinder through the
spark plug hole and inspect again.
HINT:
If adding oil increases the compression, the piston rings
and/or cylinder bore may be worn or damaged.
If pressure stays low, a valve may be sticking or seating
improperly, or there may be leakage past the gasket.
10.INSPECT CO/HC
(a)Start the engine.
(b)Run the engine at 2,500 rpm for approximately 180 seconds.
(c)Insert CO/HC meter testing probe at least 40 cm (1.3 ft) into the tail\
pipe during idling.
(d)Check CO/HC concentration at idle. Idle CO concentration: 0 to 0.5 %
Idle HC concentration: Applicable local regulation
(e)If the CO/HC concentration does not conform to specifications, perform troubleshooting in the order given below.
(1)Check heated oxygen sensor operation. (See page 12±6)
(2) See the table below for possible causes, and then inspect and repair the applicable causes ifnecessary.
A79033
±
ENGINE MECHANICAL ENGINE(1AZ±FSE)
14±183
AVENSIS REPAIR MANUAL (RM1018E)
(e)Inspect cylinder compression pressure.
SST09992±00500
(1)Insert a compression gauge into the spark plughole.
(2)Fully open the throttle.
(3)While cranking the engine, measure the compres- sion pressure.
Compression pressure:
1,300 kPa (13.3 kgf/cm
2, 189 psi)
Minimum pressure:
1000 kPa (10.2 kgf/cm
2, 145 psi)
Difference between each cylinder:
100 kPa (1.0 kgf/cm
2, 14 psi)
NOTICE:
Always use a fully charged battery to obtain engine
speed of 250 rpm or more.
Check other cylinder's compression pressure in the
same way.
This measurement must be done in as short a time as
possible.
(4)If the cylinder compression is low, pour a small amount of engine oil into the cylinder through the
spark plug hole and inspect again.
HINT:
If adding oil increases the compression, the piston rings
and/or cylinder bore may be worn or damaged.
If pressure stays low, a valve may be sticking or seating
improperly, or there may be leakage past the gasket.
10.INSPECT CO/HC
(a)Start the engine.
(b)Run the engine at 2,500 rpm for approximately 180 seconds.
(c)Insert CO/HC meter testing probe at least 40 cm (1.3 ft) into the tail\
pipe during idling.
(d)Check CO/HC concentration at idle. Idle CO concentration: 0 to 0.5 %
Idle HC concentration: Applicable local regulation
(e)If the CO/HC concentration does not conform to specifications, perform troubleshooting in the order given below.
(1)Check heated oxygen sensor operation. (See page 12±6)
(2) See the table below for possible causes, and then inspect and repair the applicable causes ifnecessary.
A61174
SST
Compression Gauge
14±268
± ENGINE MECHANICALENGINE (1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
(2) Connect SST (compression gauge) to the SST (at-
tachment).
SST 09992±00025 (09992±00211)
(3) Fully open the throttle valve, and start the engine.
(4) While cranking the engine, measure the compres-
sion pressure.
NOTICE:
Always use a fully charged battery to obtain engine
speed of 250 rpm or more.
Check other cylinder compression pressure in the
same way.
This measurement must be done in as short a time as
possible.
Compression pressure:
2,628 kPa (26.8 kgf/cm
2, 381 psi) or more
Minimum pressure:
2,157 kPa (22.0 kgf/cm
2, 312 psi) or more
Difference between each cylinder:
490 kPa (5.0 kgf/cm
2, 71 psi) or less
(5) If the cylinder compression is low, pour a small
amount of engine oil into the cylinder through the
glow plug hole and inspect again.
HINT:
If adding oil raises the compression, there are chances of
the piston rings and/or cylinder bore wear or damage.
If pressure stays low, a valve may be sticking or seating
improperly, or there may be leakage past the gasket.
90
A57501
Engine FrontPaint
Mark
A13855
A13856
14±52
± ENGINE MECHANICALCYLINDER BLOCK (1AZ±FE)
1AZ±FE ENGINE REPAIR MANUAL (RM865E)
(j) Mark the front of the bearing cap bolts with paint.
(k) Retighten the bearing cap bolts by 90 in the numerical
order shown.
(l) Check that the painted mark is now at a 90 angle to the
front.
NOTICE:
Do not turn the crankshaft.
(m) Remove the bearing cap.
(n) Measure the plastigage at its widest point.
Standard oil clearance:
0.017 ± 0.040 mm (0.0007 ± 0.0016 in.)
Maximum oil clearance: 0.07 mm (0.0028 in.)
NOTICE:
Completely remove the plastigage.
(o) If using a standard bearing, replace it with one having the
same number. If the number of the bearing cannot be de-
termined, select the correct bearing by adding together
the numbers imprinted on the cylinder block and crank-
shaft, then selecting the bearing with the same number as
the total. There are 4 sizes of standard bearings, marked
º1º, º2º, º3º and º4º accordingly.
Cylinder block
(A)
+
Crankshaft (B)
0 ± 23 ± 56 ± 89 ± 11
Use bearingº1ºº2ºº3ºº4º
HINT:
EXAMPLE
Cylinder block º4º (A) + Crankshaft º3º (B) =
Total number 7 (Use bearing º3º)
A61174
SST
Compression Gauge
− ENGINE MECHANICALENGINE (1CD−FTV)(From September, 2003)
14−89
AVENSIS Supplement (RM1045E)
(2) Connect SST (a compression gauge) to SST (the
attachment).
SST 09992−00025 (09992−00121, 09992−00211)
(3) Fully open the throttle valve, then start the engine.
(4) While cranking the engine, measure the compres-
sion pressure.
NOTICE:
SAlways use a fully−charged battery to obtain engine
speed of 250 rpm or more.
SCheck the other cylinder compression pressure in
the same way.
SThis measurement must be done as quickly as pos-
sible.
Compression pressure:
2,628 kPa (26.8 kgf/cm
2, 381 psi) or more
Minimum pressure:
2,157 kPa (22.0 kgf/cm
2, 312 psi) or more
Difference between each cylinder:
490 kPa (5.0 kgf/cm
2, 71 psi) or less
(5) If the cylinder compression is low, pour a small
amount of engine oil into the cylinder through the
glow plug hole, then measure the compression
pressure again.
HINT:
SIf adding oil raises the compression pressure, the piston
rings and/or cylinder bore may be worn or damaged.
SIf the compression pressure stays low, the valve may be
sticking or seating improperly, or there may be leakage
past the gasket.
A64968
793
481062
15
A11781
A64971
Cylinder Block:
Crankshaft:
Bearing:No. 1 No. 2 No. 3 No. 4 No. 5
No. 2
No. 3
No. 5 No. 1
No. 4
Mark
14–68
– ENGINE MECHANICALCYLINDER BLOCK ASSY (1ZZ–FE/3ZZ–FE)
1ZZ–FE,3ZZ–FE ENGINE REPAIR MANUAL
(RM1099E)
(j) Uniformly loosen the 10 bearing cap bolts in several
passes in the sequence shown in the illustration.
(k) Measure the Plastigage at its widest point.
Standard oil clearance:
0.015 to 0.032 mm (0.0006 to 0.0012 in.)
Maximum oil clearance: 0.05 mm (0.0020 in.)
NOTICE:
Completely remove the Plastigage.
If the oil clearance is greater than minimum, replace
the crankshaft bearing.
If necessary, replace the crankshaft.
HINT:
If replacing a bearing, select a new one having the same num-
ber. If the number of the bearing cannot be determined, calcu-
late the correct use bearing number by adding together the
numbers imprinted on the cylinder block and crankshaft, then
select a new bearing having the calculated number. There are
4 sizes of standard bearings, marked ”1”, ”2”, ”3” and ”4” accord-
ingly.
Cylinder block (A)
+
Crankshaft (B)
0 to 23 to 56 to 89 to 11
Use bearing”1””2””3””4”
EXAMPLE:
Cylinder block ”3” (A) + Crankshaft ”4” (B) = Total number 7 (Use
bearing ”3”)
ItemMarkmm (in.)
Cylinder block journal bore
diameter (A)
”0”
”1”
”2”
”3”
”4”
”5”
”6”52.000 to 52.002 (2.0472 to 2.0473)
52.003 to 52.004 (2.0474 to 2.0474)
52.005 to 52.006 (2.0474 to 2.0475)
52.007 to 52.009 (2.0475 to 2.0476)
52.010 to 52.011 (2.0476 to 2.0477)
52.012 to 52.013 (2.0477 to 2.0478)
52.014 to 52.015 (2.0478 to 2.0478)
Crankshaft journal diameter
(B)
”0”
”1”
”2”
”3”
”4”
”5”47.999 to 48.000 (1.8897 to 1.8898)
47.997 to 47.998 (1.8896 to 1.8897)
47.995 to 47.996 (1.8896 to 1.8896)
47.993 to 47.994 (1.8895 to 1.8895)
47.991 to 47.992 (1.8894 to 1.8894)
47.988 to 47.990 (1.8893 to 1.8894)
Standard bearing center wall
thickness
”1”
”2”
”3”
”4”1.994 to 1.997 (0.0785 to 0.0786)
1.998 to 2.000 (0.0787 to 0.0787)
2.001 to 2.003 (0.0788 to 0.0789)
2.004 to 2.006 (0.0789 to 0.0790)