Pontiac Fiero 1988 Service Manual page 272

ENGINE GENERAL INFORMATION 6 1
SECTION 6
ENGINE GENERAL INFORMATION
CONTENTS
Description 6
Engine Mechanical
2.5L L-4 6A1
2.8L V-6 6A2
Engine Cooling , 6B
Engine Fuel 6C
Engine Electrical 6D
Driveability and Emission Controls 6E
Throttle Body Injection (TBI) 6E2
Multi Port Fuel Injection (MPFI) 6E3
Exhaust Systems 6F
General Information 6-2
Engine Performance Diagnosis 6-2
Engine Mechanical Diagnosis 6-3
Engine Knock Diagnosis 6-3
Compression Test 6-5
Oil Leak Detection 6-5
A L L N E W G E N E R A L M O T O R S V E H I C L E S A R E C E R T I F I E D B Y T H E U N I T E D S T A T E S
E N V I R O N M E N T A L P R O T E C T I O N A G E N C Y A S C O N F O R M I N G T O T H E R E Q U I R E M E N T S O F
T H E R E G U L A T I O N S F O R T H E C O N T R O L O F A I R P O L L U T I O N F R O M N E W M O T O R V E H I C L E S .
T H I S C E R T I F I C A T I O N I S C O N T I N G E N T O N C E R T A I N A D J U S T M E N T S B E I N G S E T T O
F A C T O R Y S T A N D A R D S . IN M O S T C A S E S , T H E S E A D J U S T M E N T P O I N T S E I T H E R H A V E
B E E N P E R M A N E N T L Y S E A L E D A N D / O R M A D E I N A C C E S S I B L E T O P R E V E N T
I N D I S C R I M I N A T E O R R O U T I N E A D J U S T M E N T IN T H E F I E L D . F O R T H I S R E A S O N , T H E
F A C T O R Y P R O C E D U R E F O R T E M P O R A R I L Y R E M O V I N G P L U G S , C A P S , E T C . , F O R
P U R P O S E S O F S E R V I C I N G T H E P R O D U C T M U S T B E S T R I C T L Y F O L L O W E D A N D ,
W H E R E V E R P R A C T I C A B L E , R E T U R N E D T O T H E O R I G I N A L I N T E N T O F T H E D E S I G N .
For vehicles sold in Canada and equipped with non-closed
loop engines, also refer to the appropriate Canadian Service
Manual supplement.
DESCRIPTION OF SECTION 6
S E C T I O N 6 A - E N G I N E M E C H A N I C A L
This section general contains information on the
mechanical parts of the engine, such as block,
crankshaft, pistons, valve train, and camshaft, that are
common to most engines. Overhaul procedures,
removal and replacement procedures, and
specifications are also covered. Subsections furnish
detailed information on each specific engine. Service
information is also given that relates to that engine's
use in each Carline. Specific subsections are:
6A1 - 2.5L L-4 Engine
6A2 - 2.8L V-6 Engine
S E C T I O N 6 B - E N G I N E C O O L I N G
Engine cooling system components such as
radiator, water pump, thermostat, and cooling fan, are
covered in this section. Accessory drive belts are also
covered, along with cooling system capacities.
S E C T I O N 6 C - F U E L S Y S T E M
This section contains information on all the parts
of the fuel system
e x c e p t
the carburetor, or Throttle
Body Injection unit (TBI) itself. Items covered are fuel
tank, fuel pump, and fuel lines. Specific subsections are
used for each carburetor. TBI units are described in
6C1-E4ME 4BBL Carburetor
6C2-E2ME 2BBL Carburetor
6C3-E2SE 2BBL Carburetor
6C4-6510C 2BBL Carburetor
S E C T I O N
6D - ENGINE
E L E C T R I C A L
Items covered in this section are battery,
generator, starter, primary and secondary ignition,
engine wire harness, spark plugs and wires, and
ignition switch.
S E C T I O N S E - D R I V E A B I L I T Y A N D E M I S S I O N S
This section covers emission control systems
general information, and diagnostic procedures which
will lead to repairing performance and driveability
related problems for gasoline engine equipped vehicles.
All emission components are covered, as well as all
removal and replacement procedures. Instructions on
use of special tools are also given. Specific sections are:
6E - Driveability and Emissions
6E1 - Carbureted
6E2 - Fuel Injection (TBI)
6E3 - Fuel Injection (Ported)