spark plugs CHEVROLET CAMARO 1974 2.G Owners Manual

Downloaded from www.Manualslib.com manuals search engine waste gasoline, but energy is wasted
as heat in braking. Energy in the
form of gasoline
is also needed to
accelerate back to driving speed.
Lubricants
A properly lubricated vehicle
means less friction between moving
parts. Consult this manual and the
maintenance schedule for the
proper lubricants to use and the
lubrication intervals.
Automatic Choke
Your automatic choke should be
checked periodically
as it regulates
the gasoline/air mixture used in
starting and warming the engine.
Properly Tuned Engine
Overall tuning (a check on tim­
ing, distributor points, spark plugs,
emission control· devices , etc.) can
improve your car's gas mileage.
You just can't expect an
"out-of­
tune"
engine to give you good gas
mileage and cleaner air.
Excess Weight
Fuel economy is related to the
work the engine
must do. The
heavier the load, the more power
it takes. Keep excess weight to a
minimum by removing . any per­
sonal effects or luggage from the
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car or trunk when they are not
needed.
Tire Inflation
Under inflation not only causes
needless wear of the tires, but can
also waste gasoline. It's a good
idea to check tire pressures regu­
larly.
Wheel Alignment
"Toe in" or "toe out" has the
effect of dragging your front tires
sideways and causes premature tire
wear.
It takes power to carry this
extra load and that takes gas from
your tank.

Downloaded from www.Manualslib.com manuals search engine valve moves freely and is not stuck . (Don 't mistake normal spring
tension for a stuck valve.) Top the side of the carburetor sharply several times with a light tool such as a screwdriver handle or pliers. Replace the air cleaner and attempt to start the engine in the normal manner. IE) If the cor will start but stalls when hot or has a rough idle,
you can suspect a faulty IDLE ADJUSTMENT, a malfunctioning AUTOMATIC CHOKE or on extremely dirty and blocked AIR CLEANER ELEMENT. Replace paper element air cleaner if neces­sary. Idle' adjustment or automatic choke service (other than that outlined in paragraph 0 above) should be performed by your Chevrolet Dealer. If the above Fuel System checks and the checks suggested under the Electrical System following do not correct the malfunction, it is recommended that you return to your Authorized Chevrolet Dealer for further checks, adjustments or repairs.
ELECTRICAL SYSTEM • If, when the ignition key is turned to "Start", the engine will not
turn over, you have good reason to suspect electrical trouble. NOTE: Never remove Delcotron bat lead without first disconnecting
baHery ground cable.
, (F) When there is no response at all to attempts to start the car, check the obvious-your AUTOMATIC TRANSMISSION SELECTOR LEVER must be in Neutral or Park position (manucil transmission
must have clutch depressed all the way to floor) before the engine can be started. Turning the IGNITION SWITCH rapidly back and forth several times will sometimes correct a poor internal switch contact. (G) The BATTERY may be discharged. If so, lights will be dim and the horn will have a poor tone if it will blow at all. Usually a garage recharge will be necessary to return the bottery to operation. Occasionally, however, a long drive will recharge the battery.
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NOTE: If the battery is determined to be dead, and for no apparent reason, have your Authorized Chevrolet Dealer check the
baHery, the GENERATOR and the VOLTAGE REGULATOR.
GENERATOR trouble should already have been indicated by the generator indicator light on the instrument panel.
POOR BATTERY CONNECTIONS may be suspected if the car has operated properly a short time before and now not even the horn will operate. Check both ends of both battery cables. If the con­nections are corroded, a cor may sometimes be restored to opera­tion by removing all cable ends, scraping all contacting surfaces clean with a pen knife, and reassembling. If the cables are broken, they must be replaced. The power supply should now be restored unless the battery is dead.
(H) If, however, the lights and horn work properly but the starter will still not turn over, check the STARTER connections. A "dick" from the starter solenoid indicates that the wiring to the starter is properly installed. If the wiring seems to be clean and tightly in­stalled, the trouble is probably in the starter itself and should be referred to your Authorized Chevrolet Dealer.
When the engine will "turn over" but will not start, the following
items may be checked along with the Fuel Systems Checks listed
previously.
(I) With a clean dry cloth, wipe the ceramic portions of the spark plugs dry. In particularly damp or rainy weather dampness may be the cause of not starting, espe­cially when the engine is cold.
(J) Check the cables at the top of the distributor and coil as well Distributor and Coil Cables

Downloaded from www.Manualslib.com manuals search engine as each spark plug cable for
tightness.
(K) If the co r will still not sta rt, check for spark at the spark plugs in the following manner:
Pull one of the spark plug
wires off its spark plug. Insert a
short piece of bare wire (such as a bobby pin) between the rubber
cup
at the end of the spark plug
wire
and the tubular metal con­nector inside of it. If the spark
plug wire is wet or oily, wipe it Checking Spark
dry. Wrap a dry handkerchief or facial tissue, folded several
thicknesses, around the wire at least three inches back from the
end and grasp the wire at this point. Hold the bare wire about 1f ..
inch from the bare tip of the spark plug from which you removed the
wire. When the engine is "turned over" a spark should jump across
the
~ inch space, indicating ample current supply. If no spark
jumps, the difficulty
is probably caused by a defective ignition part
and should be corrected by your Authorized Chevrolet Dealer.
COOLING SYSTEM
When the car will run but evidences serious overheating on the
temperature gauge in the instrument panel, there are several items
which may be checked.
(L) Engine overheating will occur whim the OIL LEVEL falls danger­ously low. Check the oil level as a matter of course.
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(M) Low COOLANT LEVEL will, of co~rse, cause engine over­
heating. Determine the cause of the low coolant level and have
it corrected if necessary.
(N) Check the RADIATOR CORE. Clean it if it is plugged with
bugs, leaves or other foreign material.
(0) Condition of the FAN BELT is very impartant, not only for en­gine cooling but also for proper generator operation. Check the
condition of the belt. Replace it if it is worn or frayed. Loosen the generator toward the engine to remove and replace the belt. Tighten the belt, whether new or old, by loosening the generator bolts, prying with a bar on the generator until the belt is ten­sioned properly, then retighten
the generator bolts.
(P) Another cause of engine
overheating may be an inopera­
tive COOLING SYSTEM THERMO­STAT. If the thermostat should fail in the closed position, it will not
permit coolant to circulate through
the system. In such on emergency
the thermostat may be removed but should be replaced with a
properly functioning thermostat
as soon as possible.
Fan 8e/f Tension
ThermoS/of Insfallafion

Downloaded from www.Manualslib.com manuals search engine ENGINE SPECIFICATIONS
6 Cyl. Engine 8 Cylinder Engine CARBURETOR 250 Cu. In. 350 Cu. In.
ENGINE DATA
1 Barrel 2 Barrel 4 Barrel
Camp. Ratio 8.5:1
Bore 3.875
Stroke 3.56
Firing
Order 1·5·3·6-2-4
FUSES AND CIRCUIT BREAKERS
The wiring circuits in your 1974 Camaro
are protected from short circuits by a combi­
nation of fuses, circuit breakers, and fusible
thermal
linkS in the wiring itself. This greatly
reduces the hazard of electrically caused fires
in the automobile. The fuse junction block
is
located under the left side of the instrument
panel.
SPARK PLUGS
The
following spark plugs are recommended for Camaro engines.
Normal Service (Original Equip.)
L-G Engines I AC Type R-4GT
All
350 V-8 Engines I AC TypeR-44T
72
8.5:1
4.00
3.48
1-8-4-3-6-5-7-2
ITEM
Engine Oil Filter
Radiator Cap
Gasoline Cap 4
Barrel
9.0:1
USAGE RECOMMENDATION
All AC Type PF25
All
AC Type RC-33
All
AC Type GT-85