1967 CHEVROLET CAMARO fuel type

ENGINE FUEL
6M-10

the
two
"FILL71 lines
(fig.
6A). Refill whenever
the
level

falls below the lower
<'FILL"
line.

Storing Tool

When
the
tool
is
not used, fully depress
the
inner tube.

This seals
off
the
oil
reservoir from the vent hole
to pre-

vent
oil
loss
if
the tool
is
tipped.

Fig. 6A-Filling Tool with
Oil

FUEL PUMP

INDEX

Page

General Description
. . . . 6M-10

Service Procedures .6M-10

Inspection .6M-10
Page

Test
. . ; 6M-10

Removal
6M-11

Installation
6M-11

GENERAL DESCRIPTION

The fuel pump
(fig. IP)
used
on all
Chevrolet vehicles

covered
in
this manual
are of the
diaphragm type.
The

pumps
are
actuated
by an
eccentric located on
the
engine

camshaft.
On
in-line engines,
the
eccentric actuates
the

rocker arm*
On V-8
engines,
a
push
rod
(located be-

tween
the
camshaft eccentric and fuel pump) actuates
the

pump rocker
arm.
Because
of
design, this pump
is

serviced
as an
assembly only.

Fig.
IP—Fuel Pump (Non-Serviceable)

SERVICE PROCEDURES

Inspection

The fuel pump should
be
checked
to
make sure
the

mounting bolts
and
inlet and outlet connections
are
tight.

Test

Always test pump while
it is
mounted on the engine
and
be sure there
is
gasoline
in
the tank.

The line from
the
tank
to the
pump
is the
suction side

of
the
system and the line from the pump
to the
carbure-

tor
is the
pressure side
of the
system.
A
leak on
the

pressure side, therefore, would
be
made apparent
by

CHEVROLET CHASSIS SERVICE MANUAL

FUEL TANK AND EXHAUST SYSTEMS 8-2

COMPONENT PART REPLACEMENT

FUEL TANK

Draining Tank

The absence of a drain plug in the gas tanks makes it

necessary to siphon fuel from the tank when draining is

needed. The following procedure is recommended.

1.
Obtain approximately 10 feet of 3/8" I.D. hose and

cut a flat-type slit 18" from one end. Make this cut

on the hose in the direction "toward the shorter end

(See Figure 2).

2.
Insert a small pipe nipple (slightly larger O.D. than

the hose I.D.) into the opposite end of hose.

3.
Insert the nipple end of the siphon hose into the fuel

tank filler neck with the natural curl of the hose

pointing down. Insert until the hose is heard to strike

bottom of the tank.

4.
With the opposite end of the hose in a suitable con-

taner insert an air hose in downward direction in the

flap-type slit and trigger the flow of fuel.
FUEL FLOW

-If*
APPROX.-1 >SUT «<>«
AS SHOWN

10 FEET APPROX.-

Fig. 2—Siphon Construction

FWD
V-8

VIEW B

Fig. 3-Fuel Lines

CHEVROLET CHASSIS SERVICE MANUAL

FUEL TANK AND EXHAUST SYSTEMS 8-4

Fig.
5— Meter Assembly Removal Using Tool J-22554

vehicle. The fuel lines should be occasionally inspected

for leaks, kinks or dents. If evidence of dirt is found in

the carburetor or fuel pumto and disassembly, the lines

should be disconnected
and
blown out. Check the fuel tank

strainer for damage or omission. Note position of fuel

line clips for convertible models.
FUEL TANK VENT LINE

Sedan modei fuel tanks are vented to the atmosphere

at the top right- forward edge of. the tank. The vent line

is connected by a rubber hose with two clamps one at the

tank and the other at the vent pipe which is secured to

the underbody A rubber grommet around the vent pipe

acts as a seal to prevent gasoline fumes from entering

the.passenger compartment.

IMPORTANT: It is important to note that the

sedan gas tank cap is non-vented. It is neces-

sary to be assured that the vent line is free from

dirt, etc., and open at all times. If gasoline

fumes are detected, the rubber grommet should

be checked.

Station wagon models use a vented, anti-surge type gas

tank.

GAUGE UNIT AND FUEL STRAINER

Removal and Installation (Fig. 4)

1.
Follow tank removal procedure.

2.
Use Special Tool J-22554 (fig. 5) to remove cam

lock on sedan models and Tool J-8950 on station

wagons.

3.
Remove unit and rubber gasket.

4.
Reverse procedure to install.

CHEVROLET CHASSIS SERVICE MANUAL

FUEL TANK
AND
EXHAUST SYSTEMS
8-5

EXHAUST SYSTEMS

INDEX

Page

General Description
. . 8-5

Component Part Replacement
8-5

Muffler Assembly.
8-5

Exhaust Pipes.
8-5

Tail Pipes.
8-5

GENERAL DESCRIPTION

All exhaust systems used
on the 1967
Chevrolet
are
exhaust systems
(fig. 7) are
available
as
regular produc-

the split system type
in
which the. component parts
are
tion equipment
on the 427 cu. in.
displacement
V-8 en-

secured together with clamps.
The
single exhaust system gines
and as an
option
on the
other (except
283 cu. in.)

used
on L-6
engine models
(fig. 6)
consists
of an
exhaust
V-8
engines. These systems consist
of two
exhaust

pipe, muffler, tailpipe
and
attaching hardware.
On V-8
pipes, mufflers, tailpipes with resonators
and
attaching

engine single exhaust models
a
crossover pipe
is
added hardware.
All
exhaust systems
are
suspended on brackets

to connect
the
right exhaust manifold
to the
system. Dual with insulators
for
rattle free operation.

COMPONENT PART REPLACEMENT

Care should
be
taken
to
have
the
exhaust pipe, muffler

or tail pipe
in
proper relation with each other. Incorrect

alignment frequently causes annoying rattles
due to in-

correct clearances.

MUFFLER ASSEMBLY

Remove
and
Replace

1.
Remove "U" bolt clamp
at
center mounting.

2.
Remove
"U"
bolt clamp
at
forward
end of
muffler

pipe.

3.
Disengage muffler
at
exhaust
and
tail pipe

connections.

4.
Three-fourths inch clearance should
be
allowed
be-

tween
the
muffler bracket (hanger)
and
crossmember

at installation.

5. Install unit with
the
flat side
of the
muffler showing.

EXHAUST PIPE (CROSSOVER WITH
V-8
ENGINE)

Remove
and
Replace

1.
Remove
two
nuts, extension
and
packings-separate

pipe from manifold.
2.

3.
Disassemble

pipe.
"U"
damp from muffler
and
remove

Attach pipe
to
muffler, then secure
to
manifold. Note

clearances
for the
standard
and
automatic control

linkages, underbody
and
crossmember. Contact
of

exhaust pipe
to
engine panrail
is
permissible.

4.
Tighten nuts uniformly.

TAIL PIPE AND/OR RESONATOR

Remove
and
Replace

1.
Remove
"U"
clamp attachment
at
muffler.

2.
Remove screw attachment
at
tail pipe rear hanger

assembly.

3.
Remove tail pipe.

4.
Replace tail pipe
at
muffler, then install
at
hanger

Do
not
secure attachments until clearances have been

checked. Check position
of
hanger
so
that interplates

are parallel.

5. Torque nuts
7-9 ft. lbs. at
hanger
and 10-15 ft. lbs.

at muffler.

CHEVROLET CHASSIS
SEI

FUEL TANK AND EXHAUST SYSTEMS
8-8

CHEVELLE

FUEL TANKS

INDEX

Page

General Description.
g.g

Component Part Replacement
8-8

Fuel Tanks
. 8-8

Fuel Lines
8-8
Metering Units (Gauge, Sending Unit)

Fuel Tank Filler Neck Caps.
. .

Fuel Tank Vent Lines
Page

8-8

8-8

8-9

GENERAL DESCRIPTION

All models
use a 20
gallon capacity (approx.) fuel tank

mounted between
the
frame rails behind
the
rear axle.

The fuel tanks
are
basically
the
same
for
sedan, 2-seat

station wagon
and
pickup models except
for
filler neck

location
and
venting
(fig. 8).

All fuel tanks
are
vented
to the
atmosphere. Sedan

model tanks have
an
external vent hose and pipe assem-

bly
(fig. 11) and use a
non-vented fuel cap. Station wagon

and pickup model tanks
are
vented through
a
hose
and

vent pipe assembly
to the
filler neck
(fig. 8)
and
use a

vented, anti-surge type
gas cap. The
fuel caps
are two

different designs conforming
to SAE
standards
and are

not interchangeable.

The filler neck assembly
on
sedan models
is a
rear

fill design located behind
the
center
bar of the
bumper.
Station wagon
and
sedan pickup model filler neck assem-

blies
are
located
in
the left rear quarter panel.

The fuel pickup pipe
is
built integrally with
the
tank

gauge, located
at the
top-front center
of
the tank.
A
fine

mesh screen
is
located
at
the bottom-end
of the
fuel pick-

up pipe
to
prevent
the
entrance
of
foreign material into

the fuel system.

The sedan fuel tanks
are
held
in
place
by
two metal

straps attached individually
to the
underbody
at
each
end.

The straps hinge
at the
forward end and secure
the
tank

at
the
rear with
an
adjustable bolt
and nut
assembly.

The station wagon
and
pickup models have
a
frame

mounted fuel tank secured with straps
to
front and rear

supports.

COMPONENT PART REPLACEMENT

FUEL TANK

Draining Tank

The absence
of a
drain plug
in the gas
tanks makes
it

necessary
to
siphon fuel from
the
tank when draining
is

needed. Refer
to the
recommended draining procedures

previously outlined under Chevrolet Models
in
this

section.

Removal
and
Installation (Sedan Models)

1.
Raise vehicle.

2.
Drain fuel tank.

3.
Disconnect fuel pickup line
and
gauge wires from

tank unit.

4.
Disconnect vent hose from tank.

5. Remove tank support straps and lower tank carefully.

6.
To
install, reverse
the
removal procedure.

Removal
and
Installation

(Station Wagon
and
Pickup)

1.
Follow Steps
1
thru
3
outlined under sedan models.

2.
Remove tank support straps.

3.
Remove frame screw attachments from
the
front

support
(fig. 8).

4.
Guide tank forward
and
remove.

5.
To
install, reverse removal procedure.

FUEL LINES

The fuel lines, extending from fuel tank toiiuelpump,

are routed
on the
underside
of the
underbody along
the

right side
of the
vehicle opposite
the
single exhaust
sys-

tem.
The
fuel lines should occasionally
be
inspected
for
leaks,
kinks,
or
dents.
If
evidence
of
dirt
is
found
in the

carburetor
or
fuel pump
on
disassembly,
the
lines should

be disconnected
and
blown
out.
Check
the
fuel tank

strainer
for
damage
or
omission. Fuel lines
are of 5/16"

diameter tubing with beaded type ends
for
connections
of

hoses.

FUEL PIPE RETAINER
CUP

Removal
and
Installation

If fuel pipes
and
retainer clips
are
removed, Tool

J-7777 should
be
used
to
install
new
retainer clips
(fig.

10).
After removal
of the old
clip from
the
frame, position

the
new
clip
in the
location
of the old
clip. Index
the

"blind rivet"
and
press hard (hand pressure should
do)

to expand rivet.

GAUGE UNIT
AND
FUEL STRAINER

Removal
and
Installation
(Fig. 11)

1.
Drain tank
to a
level below
the
unit.

2.
Disconnect fuel pickup line
and
gauge unit wire.

3.
Use
special Tool J-8950
to
remove
cam
lock.
Re-

move unit
and
rubber gasket.

CAUTION: Carefully remove unit
so as not to

damage screen
on the end of
the pipe.

4.
Clean screen
by
blowing
out
with compressed
air.

5. Reverse procedure
to
install.

FUEL TANK FILLER NECK CAPS

The fuel tank filler neck caps
are
non-vented with
an

anti-surge feature. Station wagons have vented caps.

(Refer
to
"Fuel Tank Vent Lines").

CHEVROLET CHASSIS SERVICE MANUAL

FUEL TANK AND EXHAUST SYSTEMS 8-14

CAUTION: Carefully remove unit so as not to

damage screen oh the end of the pipe,

4.
Clean screen by blowing out with compressed air.

5. Reverse procedure to install.

FUEL LINES (Fig. 17)

The gasoline lines are routed on the underside of the

underbody prop shaft tunnel off center, on the right side,

opposite the single exhaust system. The lines extend

from the fuel tank, joint the brake lines on dual clip

assemblies, and then to the right side of the engine

to the fuel pump and over the front of the engine to the

carburetor.

Maintenance

CAUTION:

plete fuel
Always drain gasoline from com-

system including carburetor, fuel

pump and all fuel lines and fuel tank if the

vehicle is to be stored for any appreciable

length of time. This precaution will prevent ac-

cumulation of gum formation and resultant poor

engine performance.

The fuel lines should occasionally be inspected for

leaks,
kinks, or dents. If evidence of dirt is found in the

carburetor or fuel pump disassembly, the lines should be

disconnected and blown out. Check the fuel tank strainer

for damage or omission. Fuel lines are of 5/16" di-

ameter tubing for regular installation with beaded-type

ends for connections to hoses and flared ends for secure

line connections.

FUEL TANK VENT LINE (Fig. 18)

The
gas
tanks
are
vented from
the
filler neck near
the

filler neck opening with
3/16"
tubing which extends

underneath
the
vehicle
to the
front
of the gas
tank.

IMPORTANT:
It is
important
to
note that
the

gas tank
is not
vented
at the cap;
therefore,
it

is necessary
to be
assured that
the
vent line
is

free from dirt,
etc., and
that
the gas
tank vent

line
is
open
at all
times.

At
the
filler neck
the
vent line
is
wedged into
an
open-

ing
and
secured
by a
snap-on clamp.
The
vent line
is

connected
by a
rubber hose with
two
wire clamps
at the

gas tank location
and
routed
to the gas
tank hinge strap

access hole where
the
tubing
end is
protected
by a
rubber

grommet
and a
screw
and
shield secured
in the
hole
at

the strap
end.
FWD.

SEDANS

6-PASS.

STATION WAGON

Fig. 16—Fuel Tank Gauge Sending Units and Strainers

CHEVROLET CHASSIS SERVICE MANUAL

FUEL TANK
AND
EXHAUST SYSTEMS
8-18

CORVETTE

FUEL TANK

INDEX

Page

General Description.
. 8-18

Service Operations
8-18

Fuel Tank
8-18

Gauge Sending Unit
8-20

Fuel Lines.
8-20

GENERAL DESCRIPTION

20 GALLON TANK

Fig.
21
—Corvette Fuel Tanks

The Corvette
is
equipped with
a
standard
20
gallon

(approx.) tank
or an RPO 36
gallon (approx.) fiberglass

tank
(fig. 21). The
tanks
are
installed
at the
very rear

of
the
vehicle, convenient
for
direct fuel filling into
the

tank.
The
tanks
are
held
in
place
by
two metal straps
at-

tached individually
to a
removable
gas
tank frame
sup-

port.
Two
guides
at the end of
the straps
are
adjustable

for securing
the
straps onto
the
tank support. The tank

support
is
secured
to the
frame rail with flat washers,

lockwashers, bolts
and
nuts.
The
tanks' rest
on six
felt

anti-squeak pads.
One pad
centers
on the
rear frame

crossmember
and one at
each side
on the
same cross-

member.
At the
same rear location two pads
are
placed

on
the
tank
at the
metal support strap (rear) attachment
location
and
another anti-squeak
pad
cemented
on the

support
at
the front
of
the tank.

The fuel tanks
are
equipped with
a gas
gauge metering

unit,
a
fuel pickup, fuel strainer
and
vent line.
If it be-

comes necessary,
the
tank
can be
completely drained
by

removing
the
fuel pickup hose which
is
located
at
the
bot-

tom
of the
tank,
or
by removing the metering
for
quicker

draining.

A pressure vacuum type, positive vented design
cap,

conforming
to
I.C.C. regulations,
is
used on both regular

production
and
optional fuel tanks.
The cap is
inter-

changeable with past model tanks
for
service replace-

ment purposes.

SERVICE OPERATIONS

FUEL TANK

CAUTION:
IF THE GAS
TANK SHOULD
BE

REMOVED
AND
INSTALLED, CARE SHOULD

BE EXERCISED
TO
AVOID PUNCTURING,

DROPPING
OR
DENTING
THE GAS
TANK.

Removal
(20
Gallon Tank)

WARNING: FIRST REMOVE BATTERY

CABLE.
1.
Remove
the
spare tire from tire carrier.

2.
Remove spare tire carrier bolted attachments
and

carrier
(fig. 22).

3.
Remove
the "U"
bolt attachments
at
both rear tail

pipe
(See
Figure
23).

4.
Separate
the
exhaust system
at
the transmission sup-

port crossmember
by
loosening
the "U"
bolt nuts.

5. Remove both rear muffler brackets from
the
frame

and slide
the
muffler system rearward.

CHEVROLET CHASSIS SERVICE MANUAL

FUEL TANK AND EXHAUST SYSTEMS 8-20

4.
Attach the retaining straps with strap guide attached

to the fuel tank support, and secure with-the nut and

lockwasher assembly.

5. Connect the filler neck boot to the drain hose of the

tank and install boot around filler neck,

6. Connect the fuel pickup line, ground wire and make

certain that the fuel drain line is flush to 1/2" in-

board of the rear bumper opening.

7. Attach tank metering unit wires (fig. 25).

8. Replace fuel in tank. Replace gas cap.

9. Check for possible leaks.

10.
Reconnect the exhaust system by reversing the above

removal procedures (see "Exhaust System").

11.
Install spare tire carrier by securing the bolt

attachment.

12.
Install the spare tire in the tire carrier.

Removal (36 Gallon Tank)

1.
Remove cover (fig. 26).

2.
Disconnect hoses and drain tank and remove two

fittings at bottom of tank.

3.
Disconnect fuel and vent lines and wires at tank

(fig. 27).

4.
Remove straps.

installation (36 Gallon Tank)

Reverse removal procedure to install.

FUEL TANK METERING UNIT OR GAUGE

SENDING UNIT AND STRAINER

The fuel tank metering unit is located at the bottom of

the fuel tank. The fuel strainer is attached at the end of

the sending unit inside the tank.

Replacement (20 Gallon Tank)

1.
Follow fuel tank removal procedure through Step 2.

2.
Drain the tank. Disconnect the attaching wires.

3.
Remove metering unit with a fuel tank gauge unit

Spanner J-8950 (revised).

4.
'Remove metering unit and gasket.

CAUTION: Carefully remove unit so as not to

damage screen on the end of the pipe.

5. Clean strainer screen by blowing out with com-

pressed air.

6. Reverse procedure to install.

Replacement (36 Gallon Tank)

1.
Remove cover.

2.
Follow Steps 2 thru 6 as outlined under replacement

for 20 gallon tank.

FUEL LINES

20 Gallon Tank

The fuel lines are conveniently located along the out-

side of the right frame rail (fig. 28). The lines extend
Fig.
26—Gasoline Tank (36 Gallon) Compartment Cover

from the fuel tank pickup at the bottom of the tank, along

the rear frame crossmember to the right frame rail,

extending through the rail at the kickup area and along the

top inside edge of the frame to the fuel pump, Flexible

hoses are located at the fuel tank pickup and at the fuel

pump.

36 Gallon Tank

The 36 gallon tank fuel lines are routed from the bot-

tom of both sides of the tank to the right frame rail

(fig. 20).

Maintenance

CAUTION: Always drain gasoline from the

complete fuel system including carburetor, fuel

pump and all fuel lines and fuel tank if the vehi-

cle is to be stored for any great length of time.

This precaution will prevent accumulation~ol

gum formation and resultant poor engine

performance.

. The fuel lines should occasionally be inspected for

leaks,
kinks or dents, especially when work has been

done on the underside of car or after the car has been

traveling over rough or stone roads at higher speeds.

If evidence of dirt is found in the carburetor or fuel pump

at disassembly, the lines should be disconnected and

blown put. Check the fuel tank strainer for damage or

omission.

Fuel lines are beaded-type ends for connection to

hoses and flared ends for secure metal-to-metal line

connections.

CHEVROLET CHASSIS SERVICE MANUAL