1986 TOYOTA CAMRY V20 Service Information

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Page 1177 of 2389

TOYOTA CAMRY V20 1986 Service Information REPLACEMENT OF CATALYTIC
CONVERTER
1. REMOVE CONVERTER
(a) Jack up the vehicle.
(b) Check that the converter is cool.
(c) Remove the four bolts and nuts holding the pipes to the con-
verter.
(d) Remov

Page 1178 of 2389

TOYOTA CAMRY V20 1986 Service Information ENGINE MECHANICAL
± ENGINE MECHANICALEM±1

Page 1179 of 2389

TOYOTA CAMRY V20 1986 Service Information DESCRIPTION (3S±FE)
The 3S±FE engine is an in±line 4±cylinder 2.0 liter DOHC 16 valve engine.
± ENGINE MECHANICALDescription (3S±FE)EM±2

Page 1180 of 2389

TOYOTA CAMRY V20 1986 Service Information The 3S±FE engine is an in±line 4±cylinder engine with the cylinders numbered 1 ± 2 ± 3 ± 4 from the
front.
The crankshaft is supported by 5 bearing inside the crankcase. These bearing are made o

The 3S±FE engine is an in±line 4±cylinder engine with the cylinders numbered 1 ± 2 ± 3 ± 4 from the
front.
The crankshaft is supported by 5 bearing inside the crankcase. These bearing are made of aluminum
alloy.
The crankshaft is integrated with 8 weights for balance. Oil holes are placed in the center of the crank-
shaft to supply oil to the connecting rods, bearing, pistons and other components.
This engine's ignition order is 1 ± 3 ± 4 ± 2. The cylinder head is made of aluminum alloy, with a cross
flow type intake and exhaust layout and with pent±roof type combustion chambers. The spark plugs are
located in the center of the combustion chamber.
The intake manifold has 8 independent long ports and utilizes the inertial supercharging effect to im-
prove engine torque at low and medium speeds.
Exhaust and intake valves are equipped with irregular pitch springs made of special valve spring carbon
steel which are capable of functioning no matter what the engine speed.
The intake side camshaft is driven by a timing belt, and a gear on the intake side camshaft engages with
a gear on the exhaust side camshaft to drive it. The cam journal is supported at 5 places between the
valve lifters of each cylinder and on the front end of the cylinder head. Lubrication of the cam journal and
gear is accomplished by oil being supplied through the oiler port in the center of the camshaft.
Adjustment of the valve clearance is done by means of outer shim type system, in which valve adjusting
shims are located above the valve lifters. This permits replacement of the shims without removal of the
camshafts.
The resin timing belt cover is made of 2 pieces. A service hole is provided in the No. 1 belt cover for ad-
justing the timing belt tension.
Piston are made of high temperature±resistant aluminum alloy, and a depression is built into the piston
head to prevent interference with the valves.
Piston pins are the semi±floating type, with the pins fastened to the connecting rods by pressure fitting,
allowing the pistons and pins to float.
The No. 1 compression ring is made of steel and the No. 2 compression ring is made of cast iron. The oil
ring is made of a combination of steel and stainless steel. The outer diameter of each piston ring is
slightly larger than the diameter of the piston and the flexibility of the rings allows them to hug the cylin-
der walls when they are mounted on the piston rings No. 1 and No. 2 work to prevent gas leakage from
the cylinder and oil ring works to clear oil off the cylinder walls to prevent it from entering the combustion
chambers.
The cylinder block is made of cast iron. It has 4 cylinders which are approximately 2 times the length of
the piston stroke. The top of the cylinders is closed off by the cylinder head and the lower end of the cyl-
inders becomes the crankcase, in which the crankshaft is installed. In .addition, the cylinder block con-
tains a water jacket, through which coolant is pumped to cool the cylinders.
The oil pan is bolted onto the bottom of the cylinder block. The oil pan is an oil reservoir made of
pressed steel shoot. A dividing plate is included inside the oil pan to keep sufficient oil in the bottom of
the pan even when the vehicle is tilted. This dividing plate also prevents the oil from making waves when
the vehicle is topped suddenly and thus shifting the oil away from the oil pump suction pipe.
± ENGINE MECHANICALDescription (3S±FE)EM±3

Page 1181 of 2389

TOYOTA CAMRY V20 1986 Service Information DESCRIPTION (2VZ±FE)
The 2VZ±FE engine is a V type 6±cylinder 2.5 liter DOHC 24 valve engine.
± ENGINE MECHANICALDescription (2VZ±FE)EM±4

Page 1182 of 2389

TOYOTA CAMRY V20 1986 Service Information The 2VZ±FE engine has 6 cylinder in a V arrangement at bank of 60°. From the front of the RH bank cylin-
ders are numbered 1 ± 3 ± 5, and from the front of the LH bank cylinders are numbered 2 ±

The 2VZ±FE engine has 6 cylinder in a V arrangement at bank of 60°. From the front of the RH bank cylin-
ders are numbered 1 ± 3 ± 5, and from the front of the LH bank cylinders are numbered 2 ± 4 ±r 6. The crankshaft is
supported by 4 bearings inside the crankcase. These bearing are made of copper and lead alloy.
The crankshaft is integrated with 5 weights for balance. Oil holes are placed in the center of the crankshaft for sup-
plying oil to the connecting rods, pistons and other components.
This engine's ignition order is 1 ± 2 ± 3 ± 4 ± 5 ± 6. The cylinder head is made of aluminum alloy, with a cross flow
type intake and exhaust layout and with pent±roof type combustion chambers. The spark plugs are located in the
center of the combustion chambers.
At,the front and rear of the intake port of the intake manifold, a water passage has been provided which connects
the RH and LH cylinder heads.
Exhaust and intake valves are equipped with irregular pitch springs made of special valve spring carbon steel which
are capable of functioning no matter what the engine speed.
The RH and LH intake camshaft are driven by a single timing belt, and a gear on the intake side camshaft engages
with a gear on the exhaust side camshaft to drive it. The cam journal is supported at 5 (intake) or 4
(exhaust) places between the valve liters of each cylinder and on the front end of the cylinder head. Lubrication of
the cam journals and gears is accomplished by oil being supplied through the oiler port in the center of the camshaft.
Adjustment of the valve clearance is done by means of outer shim type system, in which valve adjusting shims are
located above the valve lifters. The permits replacement of the shims without removal of the camshafts.
The timing belt cover is composed of resin type No. 2 and No. 1 above and below the RH mounting bracket.
Piston are made high temperature±resistant aluminum alloy, and a depression is built into the piston head to prevent
interference with the valves.
Piston pins are the semi±floating type, with the pins fastened to the connecting rods by pressure fitting, allowing the
pistons and pins to float.
The No. 1 compression ring is made of steel and the No. 2 compression ring is made±of cast iron. The oil ring is
made of a combination of steel and stainless steel. The outer diameter of each piston ring is slightly larger than the
diameter of the piston and the flexibility of the rings allows them to hug the cylinder walls when they are mounted on
the piston. Compression rings No. 1 and No. 2 work to prevent gas leakage from the cylinder and oil ring works to
clear oil off the cylinder walls to prevent it from entering the combustion chambers.
The cylinder block is made of cast iron with a bank angle of 60°. It has 6 cylinders which are approximately 2
times the length of the piston stroke. The top of the cylinders is closed off by the cylinder heads and the lower end of
the cylinders becomes the crankcase, in which the crankshaft is installed. In addition, the cylinder block contains a
water jacket, through which coolant is pumped to cool the cylinders.
The oil pan is bolted onto the bottom of the cylinder block. The oil pan is an oil reservoir made of pressed steel
sheet. A dividing plate is included inside the oil pan to keep sufficient oil in the bottom of the pan even when the ve-
hicle is tilted. This dividing plate also prevents the oil from making waves when the vehicle is stopped suddenly and
thus shifting the oil away from the oil pump suction pipe.
± ENGINE MECHANICALDescription (2VZ±FE)EM±5

Page 1183 of 2389

TOYOTA CAMRY V20 1986 Service Information No fuel supply to injector
wNo fuel in tank
wFuel pump no working
wFuel filter clogged
wFuel line clogged or leaking
EFI system problems
Ignition problems
wIgnition coil
wIgniter
wDistributor
Spark pl

Page 1184 of 2389

TOYOTA CAMRY V20 1986 Service Information Spark plug faulty
High±tension cord faulty
Vacuum leaks
wPCV line
wEGR line
wIntake manifold
wAir intake chamber
wThrottle body
wISC valve
wBrake booster line
Pulling in air between air flow meter an

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