1982 CHEVROLET CAMARO fuel cap

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 712
2. Drain the fuel tank, then raise
and safely support the vehicle.
3. Remove the fuel tank from the vehicle.
4. Clean the area surrounding t he sender assembly to prevent
contamination of the fuel system.
5. Remove the fuel sender fr om the tank as follows:
a. Use tool J-24187 or equivalent to remove the sending unit
retaining cam. Remove the fuel sender and O-rings from the tank.
Discard the O-rings.
6. If necessary, separate the fuel pum p from the sending unit assembly.
To install: 7. If removed, install the fuel pump to the sending unit. If the strainer was
removed, it must be re placed with a new one.
8. Inspect and clean the O-ring mating surfaces.
9. Install a new O-ring in the groove around the tank opening. If applicable,
install a new O-ring on t he fuel sender feed tube.
10. Install the fuel sender assembly as follows: a. The fuel pump strainer must be in a horizontal position, and when
installed, must not block the travel of the float arm. Gently fold the
strainer over itself an d slowly position the sending assembly in the
tank so the strainer is not dam aged or trapped by the sump walls.
11. Install the retaining cam us ing tool J-24187 or equivalent.
12. Install the fuel tank assembly.
13. Lower the vehicle.
14. Fill the fuel tank, tighten the f uel filler cap and connect the negative
battery cable.

Fig. 1: Fuel pump and sending unit assembly

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 719
11. Lubricate the new large O-ring with cl
ean engine oil and install it directly
over the backup washer. Be sure t he O-ring is seated properly and is
flush with the top of the fuel meter body surface.
12. Lubricate the new small O-ring with clean engine oil and install it on the
nozzle end of the injector. Push t he O-ring on far enough to contact the
filter.
WARNING - Do not attempt to reverse this procedure and install the backup
washer and O-ring after the injector is located in the cavity. To do so will
prevent proper seating of the O-ring in th e cavity recess which could result in a
fuel leak and possible fire.
13. Install the injector by aligning the raised lug on the injector base with the
notch cast into the fuel meter body . Push down on the injector making
sure it is fully seated in the cavity. In jector installation is correct when the
lug is seated in the notch and the electrical terminals are parallel to the
throttle shaft.
14. Using new gaskets on the fuel mete r cover and a new dust seal, install
the cover to the fuel meter body. Use an appropriate thread locking
compound on the cover attaching screws.
15. Connect the injector electrical c onnector by pushing straight down until
seated firmly in place.
16. Connect the negative battery cable.
17. With the engine OFF and the igniti on ON, check for fuel leaks.
18. Install the air cleaner.
ADJUSTMENTS
MINIMUM IDLE SPEED
Minimum idle speed should only be adjus ted when installing a replacement
throttle body. The idle stop screw is used to regulate the minimum idle speed of
the engine. The throttle body is adjusted at the factory, then covered with a cap
or plug to discourage unnecessary readjustment.
2.5L ENGINES 1. Remove the air cleaner and pl ug the THERMAC vacuum port.
2. Disconnect the TV cable from the th rottle control bracket to allow access
to the idle adjustment screw.
3. Remove the throttle stop screw plug or cap.
4. Connect a tachometer to the engine.
5. Disconnect the Idle Air Control (IAC) valve connector.
6. Start the engine with the transmi ssion in PARK (auto transmission) or
NEUTRAL (manual transmission) and allow the engine speed to
stabilize. All accessories (A/C, rear defogger, etc.) should be OFF.
7. Install tool J-33047 in t he idle air passage of the throttle body. Be certain
that the tool seats fully in t he passage and no air leaks exist.

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 736
The mass air flow systems measure the
mass of air that is drawn into the
engine cylinders, rather than just the vo lume. The sensor contains a hot-wire
sensing unit, which is made up of an electronic balanced bridge network.
Whenever current is suppli ed to the sensor, the bridge is energized and the
sensing hot-wire is heated. As the air enter s the mass air flow sensor, it passes
over and cools the hot wire. When the hot wire is cooled, it's resistance changes
and additional current is needed to k eep the bridge network balanced. This
increase in current is sent to the computer as a voltage signal and is used to
calculate the mass of the incoming air. The ECM uses this information to\

determine the duration of fuel injection pulse, ignition timing and EGR operation.
The speed density systems calculate the volume of air moving through the
intake. The ECM establishes the speed fact or through a signal from the ignition
module. The Manifold or Intake Air Temperature (MAT/IAT) and the Engine
Coolant Temperature (ECT) sensors work together to assure that proper
temperature information gets to the ECM wh ile the Manifold Absolute Pressure
(MAP) sensor monitors the changes in m anifold pressure which results from
changes in engine loading. These three se nsors contribute to the density factor.
Together, these inputs (engine speed, coolant temperature sensor, etc ...) are
the major determinants of the air/fuel mixture delivered by the fuel injection
system.
The following engines and fuel managem ent systems are covered in this
section:
• 1985-1989 2.8L MPFI - Mass Air Flow
• 1990-1992 3.1L MPFI - Speed Density
• 1985-1989 5.0L and 5.7L TPI - Mass Air Flow
• 1990-1992 5.0L and 5.7L TPI - Speed Density
Relieving Fuel System Pressure

1. Disconnect the negative battery cable to prevent fuel discharge if the key
is accidentally turned to the RUN position.
2. Loosen the fuel filler cap to reliev e the tank pressure and do not tighten
until service has been completed.
3. Connect J-34730-1 fuel pressure gauge or equivalent, to the fuel
pressure test valve. Wrap a shop towel around the fitting while
connecting the gauge to prevent spillage.
4. Place the end of the bleed hose into a suitable container and open the
valve to relieve the fuel system pressure.
ELECTRIC FUEL PUMP
REMOVAL & INSTALLATION
The fuel pump is part of t he fuel sender assembly located inside the fuel tank.

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 738
14. Fill the fuel tank, tighten the f
uel filler cap and connect the negative
battery cable.
15. Turn the ignition switch to t he ON position for 2 seconds, OFF for 10
seconds, then back to the ON posit ion. Check for fuel leaks.

Fig. 2: Fuel pump assembly
TESTING 1. Relieve the fuel system pressure and check that there is an adequate
quantity of fuel in the tank.
2. Connect a fuel pressure gauge to the pressure connector fitting located
on the end of the fuel rail.

Fig. 3: Fuel pressure can be check ed using an inexpensive pressure/vacuum
gauge

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 744
7. Start the engine and che
ck for proper operation.
FUEL INJECTORS
REMOVAL & INSTALLATION
Use care in removing injectors to prev ent damage to the electrical connector
pins and the nozzle. The fuel injector is serviced as a complete assembly only.
Since it is an electrical compon ent, DO NOT immerse it in a cleaner.
2.8L AND 3.1L ENGINES 1. Disconnect the negative battery cable.
2. Relieve the fuel system pressure.
3. Remove the intake plenum and the fuel rail assembly.
4. Rotate the injector retaining clip to the unlocked position and remove the
injector. Discard the O-rings and the injector retaining clip.
Different injectors are calibrated for different flow rates. When ordering new
injectors, be sure to order the identical part number that is inscribed on the old
injector.
To install: 5. Lubricate the new O-ri ng seals with engine oil and install them on the
injector. Assemble a new reta ining clip on the injector.
6. Install the injector into the fuel ra il socket with the electrical connections
facing outward. Rotate the retaini ng clip to the lock position.
7. Install the fuel rail assembly.
8. Install the intake pl enum with new gaskets.
9. Tighten the fuel filler cap and connect the negative battery cable.
10. With the engine OFF and the igniti on ON, check for fuel leaks.

Fig. 1: Sectional view of a fuel injector

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 746
5.0L AND 5.7L TPI ENGINES
1. Disconnect the negative battery cable.
2. Relieve the fuel system pressure.
3. Remove the intake plenum and runners.
4. Remove the fuel rail assembly.
5. Rotate the injector retaining clip to the unlocked position and remove the
injector. Discard the O-rings and the injector retaining clip.
There are two different injector part numbers for the 5.0L and the 5.7L engine.
Do not intermix injectors with different part numbers, as this will result in engine
roughness and excessive emissions. When or dering new injectors, be sure to
order the identical part number that is inscribed on the old injector. However, if a
complete set of injectors is being repl aced, either part number for that engine
application may be used.
To install:
6. Lubricate the new O-ri ng seals with engine oil and install them on the
injector. Assemble a new reta ining clip on the injector.
7. Install the injector into the fuel ra il socket with the electrical connections
facing outward. Rotate the retaini ng clip to the lock position.
8. Install the fuel rail assembly.
9. Install the intake plenum and runners with new gaskets.
10. Tighten the fuel filler cap and connect the negative battery cable.
11. With the engine OFF and the igniti on ON, check for fuel leaks.
FUEL RAIL ASSEMBLY
REMOVAL & INSTALLATION
When servicing the fuel system, be sure to relieve the pressure of the system
and drain the fuel into an approved contai ner. Cap all open fuel lines and plug
any other open passages. DO NO T allow dirt or other contaminants to enter the
system.
2.8L AND 3.1L ENGINES 1. Disconnect the negative battery cable.
2. Relieve the fuel system pressure.
3. Remove the intake plenum.
4. Clean the fuel rail assembly to pr event dirt from entering the system.
5. Remove the cold start tube at th e fuel rail fitting. Use a backup wrench
on the fuel rail fitting to pr event it from turning.
6. Disconnect the fuel feed and return lines at the rail.
7. Disconnect the vacuum hose at the pressure regulator.
8. Unplug the electrical connectors.
9. Loosen and remove the fuel rail attaching bolts.
10. Remove the fuel rail assembly from the intake manifold.
11. Discard all of the O-ring seals t hat are exposed during this procedure.

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 755
16. With the aid of an assistant, posit
ion and support the fuel tank with the
straps. Loosely install the front fuel tank attaching bolts.
17. Engage the electrical connection.
18. Connect the fuel hoses and li nes separated during removal.
19. Install the muffler heat sh ield and the exhaust system.
20. Install the rear axle and the fuel filler neck shield.
21. Lower the vehicle.
22. Add fuel and install the filler cap.
23. Connect the negative battery cable.
24. With the engine OFF, turn the igni tion switch to the ON position for 2
seconds, then turn it to the OFF positi on for 10 seconds. Again turn it to
the ON position and check for fuel leaks.
SENDING UNIT REPLACEMENT 1. Remove the fuel tank.
2. Clean the area surrounding t he sender assembly to prevent
contamination of the fuel system.
3. Using tool J-24187 or equivalent, re move the sending unit retaining cam.
Remove the fuel sender and O-rings fr om the tank. Discard the O-rings.
4. If necessary, separate the fuel pum p from the sending unit assembly.
To install: 5. If removed, install the fuel pump to the sending unit. If the strainer was
removed, it must be re placed with a new one.
6. Inspect and clean the O-ring mating surfaces.
7. Install a new O-ring in the groove around the tank opening. If applicable,
install a new O-ring on t he fuel sender feed tube.
8. Install the fuel sender assembly as follows: a. The fuel pump strainer must be in a horizontal position, and when
installed, must not block the travel of the float arm. Gently fold the
strainer over itself an d slowly position the sending assembly in the
tank so the strainer is not dam aged or trapped by the sump walls.
9. Install the retaining cam us ing tool J-24187 or equivalent.
10. Install the fuel tank assembly.

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 778

Fig. 4: Add clean oil to the engine to ac hieve the correct level, indicated on
dipstick. Do not overfill
Your engine oil should be checked at regular intervals (such as every fuel stop).
Check the engine oil as follows:
1. Make sure the car is parked on level ground.
2. When checking the oil le vel it is best for the engine to be at normal
operating temperature, although checking the oil immediately after
stopping will lead to a false reading. Wa it a few minutes after turning off
the engine to allow the oil to drain back into the crankcase.
3. Open the hood and locate the dipsti ck which should be on either the
passenger's side for the V8 engine or driver's side for the L4 and V6
engines. Pull the dipstick fr om its tube, wipe it clean and then reinsert it.
4. Pull the dipstick out agai n and, holding it horizontally, read the oil level.
The oil should be between the FULL and ADD marks on the dipstick. If
the oil is below the ADD mark, add oil of the prop er viscosity through the
capped opening in the top of the cylinder head cover.
5. Replace the dipstick and check the o il level again after adding any oil. Be
careful not to overfill the crankcase. Approximately 1 quart (0.9L) of oil
will raise the level from the ADD mark to the FULL mark. Excess oil will
generally be consumed at an accelerated rate.