1967 CHEVROLET CAMARO engine oil

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Page 305 of 659

CHEVROLET CAMARO 1967 1.G Chassis Workshop Manual
ENGINE 6-40

SPECIAL TOOLS

Fig.
2T - Engine Special Tools

1. J-4536

2.
J-1264

J-8058

J-5853

3.
J-8087

4.
J-8001

5.
J-7316

6. J-8037

7.
J-8020

J-8021

J-8032

J-22249

J-22147

J-2225

Page 306 of 659

CHEVROLET CAMARO 1967 1.G Chassis Workshop Manual
SECTION 6K

ENGINE COOLING

INDEX

Page

General Description . . . 6K-1

Maintenance and Adjustments 6K-1

Coolant Level 6K-1

Coolant System Checks 6K-1

Periodic Maintenance 6K-2

Cleaning 6K-2

Re

SECTION 6K

ENGINE COOLING

INDEX

Page

General Description . . . 6K-1

Maintenance and Adjustments 6K-1

Coolant Level 6K-1

Coolant System Checks 6K-1

Periodic Maintenance 6K-2

Cleaning 6K-2

Reverse Flushing 6K-2

Radiator 6K-2
Page

Cylinder Block and Cylinder Head 6K-2

Hot Water Heater 6K-2

Fan Belt . 6K-2

Adjustment ....". 6K-2

Thermostat . 6K-2

Replacement 6K-2

Water Pump. . . . 6K-3

Removal 6K-3

Installation 6K-3

GENERAL DESCRIPTION

A pressure cooling system is provided for on all

models by a pressure type radiator cap (fig. 1). The

pressure type radiator cap used is designed to hold a

pressure above atmospheric pressure in the cooling

system. Excessive pressure is relieved by a valve within

the cap that opens to radiator overflow.

The water pump is a ball bearing, centrifugal vane

impeller type. It requires no care other than to make

certain the air vent at the top of the housing and the drain

holes in the bottom do not become plugged with dirt or

grease. Removal and installation of the water pump is

covered in this section. For overhaul procedures of the

water pump refer to Section 6K of the Passenger Chassis

Overhaul Manual.
For radiator, refer to Section 13 of this manual For

radiator shroud, refer to Section 11 of this manual.

Fig.
I—Pressure Radiator Cap

MAINTENANCE AND ADJUSTMENTS

Coolant Level

The radiator coolant level should only be checked when

the engine is cool, particularly on cars equipped with air

conditioning. If the radiator cap is removed from a hot

cooling system, serious personal injury may result

The cooling system fluid level should be maintained

one inch below the bottom of the filler neck of the radia-

tor when cooling system is cold, or at the bottom of the

filler neck when the system is warm. It is very impor-

tant that the correct fluid level be maintained. The seal-

ing ability of the radiator cap is affected when the cooling

level is too high.

All passenger car cooling systems are pressurized

with a pressure cap which permits safe engine operation

at cooling temperatures of
up
to 247°F.

When the radiator cap is removed or loosened, the

system pressure drops to atmospheric, and the heat

which had caused water temperature to be higher than

212°F, will be dissipated by conversion of water to

steam. Inasmuch as the steam may form in the engine

water passages, it will blow coolant out of the radiator

upper hose and top tank, necessitating coolant replace-

ment Engine operating temperatures higher than the

normal boiling point of water are in no way objectionable

so long as the coolant level is satisfactory when the

engine is cooL

Upon repeated coolant loss, the pressure radiator cap

and seat should be checked for sealing ability. Also, the
cooling system should be checked for loose hose con-

nections, defective hoses, gasket leaks, etc.

Coolant System Checks

1.
Test for restriction in the radiator, by warming the

engine up and then turning the engine off and feeling

the radiator. The radiator should be hot at the top

and warm at the bottom, with an even temperature

rise from bottom to top. Cold spots in the radiator

indicate clogged sections.

2.
Water pump operation may be checked by running the

engine while squeezing the upper radiator hose. A

pressure surge should be felt Check for a plugged

vent-hole in pump.

NOTE:
A defective head gasket may allow ex-

haust gases to leak into the cooling system.

This is particularly damaging to the cooling

system as the gases combine with the water to

form acids which are particularly harmful to

the radiator and engine.

3.
To check for exhaust leaks into the cooling system,

drain the system until the water level stands just

above the top of the cylinder head, then disconnect

the upper radiator hose and remove the thermostat

and fan belt. Start the engine and quickly accelerate

several times. At the same time note any appreci-

able water rise or the appearance of bubbles which

CHEVROLET CHASSIS SERVICE MANUAL

Page 307 of 659

CHEVROLET CAMARO 1967 1.G Chassis Workshop Manual
ENGINE COOLING 6K-2

are indicative of exhaust gases leaking into the coolr

ing system.

Periodic Maintenance

Periodic service must be performed to the engine cool-

ing system to keep it in effici

ENGINE COOLING 6K-2

are indicative of exhaust gases leaking into the coolr

ing system.

Periodic Maintenance

Periodic service must be performed to the engine cool-

ing system to keep it in efficient operating condition.

These services should include a complete cleaning and

reverse flushing as well as a reconditioning service.

In the course of engine operation, rust and scale ac-

cumulate in the radiator and engine water jacket. The

accumulation of these deposits can be kept to a minimum

by the use of a good rust inhibitor but it should be

remembered that an inhibitor will not remove rust al-

ready present in the cooling system.

Two common causes of corrosion are: (1) air suction--

Air may be drawn into the system due to low liquid level

in the radiator, leaky water pump or loose hose con-

nections; (2) exhaust gas leakage—Exhaust gas may be

blown into the cooling system past the cylinder head

gasket or through cracks in the cylinder head and block.

Cleaning

A good cleaning solution should be used to loosen the

rust and scale before reverse flushing the cooling

system. There are a number of cleaning solutions avail-

able and the manufacturer's instructions with the particu-

lar cleaner being used should always be followed.

An excellent preparation to use for this purpose is GM

Cooling System Cleaner. The following directions for

cleaning the system applies only when this type cleaner

is-used.

1.
Drain the cooling system including the cylinder block

and then close both drain plugs.

2.
Remove thermostat and replace thermostat housing.

3.
Add the liquid portion (No. 1) of the cooling system

cleaner.

4.
Fill the cooling system with water to a level of about

3 inches below the top of the overflow pipe.

5. Cover the radiator and run the engine at moderate

speed until engine coolant temperature reaches 180

degrees.

6. Remove cover from radiator and continue to run the

engine for 20 minutes. Avoid boiling.

7. While the engine is still running, add the powder

portion (No. 2) of the cooling system cleaner and

continue to run the engine for 10 minutes.

8. At the end of this time, stop the engine, wait a few

minutes and then open the drain cocks or remove

pipe plugs. Also remove lower hose connection.

CAUTION: Be careful not to scald your hands.

NOTE:
Dirt and bugs may be cleaned out of

the radiator air passages by blowing out with air

pressure from the back of the core.

Reverse Flushing

Reverse flushing should always be accomplished after

the system is thoroughly cleaned as outlined above.

Flushing is. accomplished through the system in a direc-

tion opposite to the normal flow. This action causes the

water to get behind the corrosion deposits and force

them out.

Radiator

1.
Remove the upper and lower radiator hoses and re-

place the radiator cap,

2.
Attach a lead-away hose at the top of the radiator.
3.
Attach a new piece of hose to the radiator outlet

connection and insert the flushing gun in this hose.

4.
Connect the water hose of the flushing gun to a water

outlet and the air hose to an air line.

5. Turn on the water and when the radiator is full, turn

on the air in short blasts, allowing the radiator to

fill between blasts of air.

CAUTION: Apply air gradually as a clogged

radiator will stand only a limited pressure.

6. Continue this flushing until the water from the lead-

away hose runs clear.

Cylinder Block and Cylinder Head

1.
With the thermostat removed, attach a lead-away

hose to the water pump inlet and a length of new hose

to the water outlet connection at the top of the engine.

NOTE:
Disconnect the heater hose when re-

verse flushing engine.

2.
Insert the flushing gun in the new hose.

3.
Turn on the water and when the engine water jacket

is full, turn on the air in short blasts.

4.
Continue this flushing until the water from the lead-

away hose runs clear.

Hot Water Heater

1.
Remove water outlet hose from heater core pipe.

2.
Remove inlet hose from engine connection.

3.
Insert flushing gun and flush heater core. Care must

be taken when applying air pressure to prevent

damage to the core.

Fan Belt

Adjustment

1.
Loosen bolts at Delcotron slotted bracket.

2.
Pull Delcotron away from engine until desired ten-

sion reading is obtained with a strand tension gauge.

Refer to Section 6, "Engine Tune-Up".

3.
Tighten all Delcotron bolts securely.

Thermostat

The thermostat consists of a restriction valve actuated

by a thermostatic element. This is mounted in the hous-

ing at the cylinder head water outlet above the water

pump,
thermostats are designed to open and close at

predetermined temperatures and if not operating properly

should be removed and tested as follows.

Replacement

1.
Remove radiator to water outlet hose.

2.
Remove thermostat housing bolts and remove water

outlet and gasket from thermostat housing (fig. 2).

3.
Inspect thermostat valve to make sure it is in good

condition.

4.
Place thermostat in hot water 25° above the temper-

ature stamped on the thermostat valve.

5. Submerge the valve completely and agitate the water

thoroughly. Under this condition the valve should

open fully.

6. Remove the thermostat and place in water 10° below

temperature indicated on the valve.

7. With valve completely submerged and water agitated

thoroughly, the valve should close completely.

8. If thermostat checks satisfactorily, re-install, using

a new housing gasket.

9. Refill cooling system.

CHEVROLET CHASSIS SERVICE MANUAL

Page 309 of 659

CHEVROLET CAMARO 1967 1.G Chassis Workshop Manual
SECTION 6M

ENGINE FUEL

CONTENTS OF THIS SECTION

Page

Carburetors 6M-1 Fuel Pumps .

Air Cleaners 6M-7 Special Tools
Page

6M-10

6M-12

CARBURETORS

INDEX

Page

General Description 6M-1

Servic

SECTION 6M

ENGINE FUEL

CONTENTS OF THIS SECTION

Page

Carburetors 6M-1 Fuel Pumps .

Air Cleaners 6M-7 Special Tools
Page

6M-10

6M-12

CARBURETORS

INDEX

Page

General Description 6M-1

Service Procedures 6M-1

Preliminary Checks 6M-1

Idle Speed and Mixture Adjustment ........... 6M-1

Fast Idle Adjustment .................. 6M-3

Choke Adjustment 6M-3

Float Adjustment 6M-4
Page

Additional Adjustments 6M-4

Removal 6M-4

Test Before Installation 6M-5

Installation 6M-5

Fuel Filter Maintenance 6M-5

Choke Coil Replacement 6M-5

Throttle Linkage Adjustment . . 6M-6

GENERAL DESCRIPTION

Various carburetors (fig. lc) are used with Chevrolet,

Chevelle, Chevy II, Camaro and Corvette passenger

vehicles. These carburetors are designed to meet the

particular requirements of engines, transmissions and

vehicles, therefore carburetors that look alike are not

always interchangeable. (Refer to carburetor part num-

ber and/or specifications.)

Because many service procedures for the various

carburetors are similar, typical illustrations and pro-

cedures are used except where specific illustrations or
procedures are necessary to clarify the operation.

This section covers removal, installation and adjust-

ments (on engine) of carburetors. Also covered in this

section are maintenance procedures for choke coils,

throttle linkage and fuel filters. For carburetor .over-

haul procedures and additional adjustments (bench), re-

fer to Section 6M of the Overhaul Manual under the

carburetor being serviced.

Specifications for carburetors are located in the back

of this manual.

SERVICE PROCEDURES

Preliminary Checks

1.
Thoroughly warm-up engine. If the engine is cold,

allow to run for at least 15 minutes.

2.
Inspect torque of carburetor to intake manifold bolts

and intake manifold to cylinder head bolts to exclude

the possibility of air leaks.

3.
Inspect manifold heat control valve (if used) for free-

dom of action and correct spring tension.

Idle Speed and Mixture Adjustment (Except Air Injection

Reactor System)

NOTE:
This adjustment should be performed

with engine at operating temperature and park-

ing brake applied.

1.
Remove Air Cleaner.

2.
Connect tachometer and vacuum gauge to engine, then

set hand brake and shift transmission into neutral.

3.
As a preliminary adjustment, turn idle mixture

screws lightly to seat and back out 1-1/2 turns.

CAUTION: Do not turn idle mixture screw

tightly against seat or damage may result.

4.
With engine running (choke wide open) adjust idle
speed screw to specified idle speed, (automatic

transmission in drive, synchronized transmission in

neutral).

5. Adjust idle mixture screw to obtain highest steady

vacuum at specified idle speed.

NOTE:
On air conditioned vehicles, turn air

conditioning to the "on" position and hold the

hot idle compensator valve closed while adjust-

ing idle speed and idle mixture screws.

NOTE:
On Rochester BV carburetors the idle

mixture screw should be turned out 1/4 turn

from the "lean roll" position. The definition

of "lean roll" point is a 20 to 30 rpm drop

in engine speed obtained by leaning the idle

mixture.

6. Repeat Steps 4 and5 as needed for final adjustment.

NOTE:
If necessary, final adjustment of the \

carburetor may be made with the air cleaner

installed.

7. Turn engine off, remove gauges and install air

clearer.

CHEVROLET CHASSIS SERVICE MANUAL

Page 313 of 659

CHEVROLET CAMARO 1967 1.G Chassis Workshop Manual
ENGINE FUEL 6M-5

3.
Disconnect choke rod or choke cable.

4.
Disconnect accelerator linkage.

5.
If equipped with Automatic transmission, discon-

nect TV linkage.

6. Remove carburetor attaching

ENGINE FUEL 6M-5

3.
Disconnect choke rod or choke cable.

4.
Disconnect accelerator linkage.

5.
If equipped with Automatic transmission, discon-

nect TV linkage.

6. Remove carburetor attaching nuts and/or bolts and

remove carburetor.

Test Before Installation -

It is good shop practice to fill the carburetor bowl

before installing the carburetor. This reduces the strain

on the starting motor and battery and reduces the pos-

sibility of backfiring while attempting to start the engine.

A fuel pump clamped to the bench, a small supply of fuel

and the necessary fittings enable the carburetor to be

filled1 and the operation of the float and'intake needle and

seat to be checked. Operate the throttle several times

and check the discharge from the pump jets before in-

stalling the carburetor.

Installation

1.
Be certain throttle body and intake manifold sealing

surfaces are clean.

2.
Install new carburetor to manifold flange gasket (if

required).

3.
Install carburetor over manifold studs.

4.
Start vacuum and fuel lines at carburetor.

5.
Install attaching nuts and/or bolts and tighten

securely.

6. Tighten fuel and vacuum lines.

7.
Connect and adjust accelerator and TV linkage.

8. Connect choke tube or choke rod.

9. Adjust idle speed and mixture, then install air

cleaner. #

Fuel Filter Maintenance

1.
Disconnect fuel line connection at inlet fuel filter

nut.

2.
Remove inlet fuel filter nut from carburetor with a

1"
box wrench or socket.

3.
Remove filter element and spring (fig. 4c).
Fig. 5C-Choke Coil-L6 Engine

4.

Fig. 4C-Fuel Filter
Check element for restriction by blowing on cone

end, element should allow air to pass freely.

5.
Clean element by washing in solvent and blowing out.

Blow in opposite direction of fuel flow.

NOTE: Element should be replaced if plugged

or if flooding ocpurs. A plugged filter will

result in a loss of engine power or rough (pul-

sating) engine feel, especially at high engine

speeds.

6. Install element spring, then install element in car-

buretor so small section of cone faces out.

7.
Install new gasket on inlet fitting nut then install

nut in carburetor and tighten securely.

8. Install fuel line and tighten connector.

Choke Coil Replacement

L6 Engines (Fig. 5c)

1.
Remove air cleaner then disconnect choke rod upper

clip.

2.
Remove bolts attaching choke coil to manifold, then

remove choke coil and choke rod as an assembly.

3.
Disconnect choke rod from choke coil.

4.
Connect choke rod to new choke coil and install as-

sembly on manifold.

5.
Install bolts and tighten securely.

6. Adjust and connect choke rod as outlined.

7.
Start and warm-up the engine then check operation

of choke and install air cleaner.

V8 Engines (Fig. 6c)

1.
Remove air cleaner then disconnect choke rod upper

clip.

2.
Remove choke coil as follows:

WITH ROCHESTER 2GV CARBURETOR

• Remove the choke coil shield by prying with a

screw driver in the cut out provided then re-

move the choke rod.

CHEVROLET CHASSIS SERVICE MANUAL

Page 314 of 659

CHEVROLET CAMARO 1967 1.G Chassis Workshop Manual
ENGINE FUEL 6M-6

Fig.
6C-Choke Coil-V8 Engine

• Remove bracket and choke coil assembly.

WITH ROCHESTER 4MV AND

HOLLEY CARBURETORS

• Remove the choke coil shield by prying with a

screw driv

ENGINE FUEL 6M-6

Fig.
6C-Choke Coil-V8 Engine

• Remove bracket and choke coil assembly.

WITH ROCHESTER 4MV AND

HOLLEY CARBURETORS

• Remove the choke coil shield by prying with a

screw driver in the cut out provided then lift

shield carefully over rod.

• Remove choke rod, bracket screw and choke

coil assembly
3.
Install a new choke coil assembly being sure the

locating tab is in the forward hole of the intake

manifold then install mounting screw.

4.
Complete installation as follows:

WITH ROCHESTER 2GV CARBURETOR

• Check that the choke rod eye of the coil is

below the stop tab on the bracket then install

the choke
ro and adjust if necessary.

• Install the choke coil shield over the choke coil

and move shield to best fit along manifold.

WITH ROCHESTER 4MV AND

HOLLEY CARBURETORS

• Install the choke rod and adjust as necessary

(without choke coil shield installed).

• Disconnect choke rod upper end and lower choke

coil shield over choke rod and install over choke

coil.

• Move shield to best fit along manifold and con-

nect upper end of choke rod.

5. Be sure choke valve moves freely from full open

to full closed position.

6. Start and warm up the engine and check operation

of the choke.

7. Install the air cleaner.

Throttle Linkage Adjustment (Fig. 7c or 8c)

1.
Disconnect throttle rod swivel at throttle lever on

carburetor.

2.
On automatic transmission equipped vehicles dis-

connect TV rod at throttle lever.

3.
Hold carburetor throttle in wide open position, push

throttle rod rearward (to position accelerator pedal

at the floor mat) and adjust swivel to just enter hole

in throttle lever.

4.
Connect swivel to throttle lever and install accelera-

tor return spring.

CAMARO & CHEVY II V8

CHEVELLE & CHEVROLET

V8

CAMARO
&
CHEVY
II

V8

CHEVELLE &

CHEVROLET V8
ALL SERIES

IN LINE

ALL SERIES

INLINE

Fig.
7C—Throttle Linkage—Chevrolet, Chevelle, Chevy II and Camaro

CHEVROLET CHASSIS SERVICE MANUAL

Page 315 of 659

CHEVROLET CAMARO 1967 1.G Chassis Workshop Manual
ENGINE FUEL 6M-7

5. On vehicles equipped with automatic transmission

hold throttle rod in full throttle position, pull TV

rod to full detent position and adjust TV rod to just

enter hole on throt

ENGINE FUEL 6M-7

5. On vehicles equipped with automatic transmission

hold throttle rod in full throttle position, pull TV

rod to full detent position and adjust TV rod to just

enter hole on throttle lever, then connect TV rod at

throttle lever.
NOTE:
If equipped with anti-stall device (dash-

pot),
set carburetor fast idle cam on high step

and adjust dash-pot to just contact throttle

lever.

327
CU.
IN.
427
CU.
IN.

Fig.
8C—Throttle Linkage-Corvette

AIR
CLEANERS

INDEX

Page

General Description 6M-7

Service Procedures . . 6M-8

Polyurethane. Element 6M-8

Maintenance 6M-8

Oil Bath 6M-8
Page

Maintenance
...........* 6M-8

Oil
Wetted
Paper
Element
6M-9

Replacement
* . 6M-9

Testing 6M-9

Tool J-7852 . 6M-9

GENERAL DESCRIPTION

Air cleaners on all models operate primarily to re-

move dust and dirt from the air that is taken into the

carburetor and engine. All air cleaners on engines

equipped with "Closed Positive" ventilation incorporate

flame arresters. Every 12,000 miles the flame ar-

resters should be removed, cleaned in solvent and blown

dry with compressed air.

An oil wetted polyurethane element air cleaner (fig. 1A)

is standard equipment on In Line engines. This type

cleaner element is reusable and should be removed,

cleaned, re-oiled and reinstalled every 12,000 miles or

more often during dusty or other adverse driving con-

ditions. The optional, oil bath air cleaner (available on
Chevrolets with L6 engine) should be cleaned and re-

filled with oil at oil change intervals.

On the V8 engines,, a replaceable, oil wetted paper

element type is used (fig; 2A). Both ends of me paper

element are bonded with plastisol sealing material.

The improved oil wetted paper elements have increased

filtering capacity over their dry paper predecessors.

Oil on the paper causes the element to become diBcolored

by a small amount of dirt but does not necessarily mean

the element is plugged or reduced in efficiency. Every

12,000 miles or more often during dusty or other adverse

driving conditions, either replace oil wetted paper ele-

ment or test element using ToolJ-7825.

CHEVROLET CHASSIS SOVICE/MANUAL

Page 316 of 659

CHEVROLET CAMARO 1967 1.G Chassis Workshop Manual
ENGINE FUEL 6M-8

^T^l^^/-vN

COVER
BOTTOM

Fig. 1A—Polyurethane Element Air Cleaner
OIL RESISTANCE

SEAL

BOTTOM
BONDED PAPER

ELEMENT

COVER

Fig. 2A—Paper Element Air Cleaner

SERVICE
PRO

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