tra DODGE NEON 2000 Service Repair Manual

Connector
Name/NumberColor Location Fig.
Left License
Lamp
(Built-Up-
Export)NAT Rear of Lamp 13
Left Park/Turn
Signal Lamp
(Except
Built-Up-
Export)BK At Lamp N/S
Left Rear Door
Lock MotorBK At Motor 16
Left Rear Fog
Lamp
(Built-Up-
Export)GY At Lamp N/S
Left Rear
SpeakerBK At Speaker 11
Left Rear Turn
Signal Lamp
(Built-Up-
Export)GY At Lamp 11
Left Rear
Wheel Speed
SensorBL At Left Rear
Wheel
OpeningN/S
Left Repeater
Lamp
(Built-Up-
Export)BL At Lamp 1
Left Tail/Stop
Lamp
(Built-Up-
Export)BK At Lamp 11
Left Tail/Stop/
Turn Signal
Lamp (Except
Built-Up-
Export)BK At Lamp N/S
License Lamp
(Except
Built-Up-
Export)NAT Rear of Lamp N/S
Low Note
HornBK Right Inner
Fender1
Manifold
Absolute
Pressure
SensorBK Left Front of
Engine4
Map/Reading
LampsBK Front of
Headliner9Connector
Name/NumberColor Location Fig.
Multi-Function
SwitchGY Left Side of
Instrument
Panel6
Oxygen
Sensor 1/1
UpstreamGY Right Rear of
Engine5
Oxygen
Sensor 1/2
Downstream
(2.0L)GY Right Rear of
Engine5
Park/Neutral
Position
Switch (ATX)BK On
TransmissionN/S
Passenger
AirbagYL Right Side of
Instrument
Panel6
Passenger
Cylinder Lock
SwitchBK At
Passengers
Door15
Passenger
Door Lock
MotorBK At
Passengers
Door15
Passenger
Door Lock
SwitchBK At
Passengers
Door15
Passenger
Power MirrorGY At
Passengers
Door15
Passenger
Power
Window MotorBK At
Passengers
Door15
Passenger
Power
Window
SwitchGY At
Passengers
Door15
Power Mirror
SwitchGY At Drivers
Door14
Power
Steering
Pressure
SwitchGY Left Rear of
Engine
Compartment2
Powertrain
Control
Module - C1BK Left Fender
Side Shield4
Powertrain
Control
Module - C2BK Left Fender
Side Shield2
PRNDL Lamp BK At Center
Console6
8W - 90 - 4 8W - 90 CONNECTOR/GROUND LOCATIONSPL
DESCRIPTION AND OPERATION (Continued)

Connector
Name/NumberColor Location Fig.
Sunroof
Control
ModuleAt Sunroof N/S
Sunroof Motor At Sunroof N/S
Sunroof
SwitchBK At Switch N/S
Sunroof Vent
SwitchAt Switch N/S
Throttle
Position
SensorBK On Throttle
Body2
Torque
Converter
Clutch
Solenoid
(ATX)BK On
Transmission2
Traction
Control SwitchWT Center of
Instrument
Panel7Connector
Name/NumberColor Location Fig.
Trunk Key
Cylinder
SwitchGY On Decklid 17
Underhood
LampBK At Lamp N/S
Vehicle Speed
Control ServoBK At Right Front
Strut Tower1, 3
Vehicle Speed
SensorBK On
Transmission5
Windshield
Washer PumpRD At Right Front
Wheel
Opening1
Wipe/Wash
SwitchGY Center of
Instrument
Panel6
Wiper Motor BK Left Side of
Engine
CompartmentN/S
8W - 90 - 6 8W - 90 CONNECTOR/GROUND LOCATIONSPL
DESCRIPTION AND OPERATION (Continued)

Connector
Name/NumberColor Location Fig.
Oxygen
Sensor 1/2
Downstream
(2.0L)GY Right Rear of
Engine22
Park/Neutral
Position
Switch (ATX)BK On
TransmissionN/S
Passenger
AirbagYL Left Side of
Instrument
Panel25
Passenger
Cylinder Lock
SwitchBK At
Passengers
Door33
Passenger
Door Lock
MotorBK At
Passengers
Door33
Passenger
Door Lock
SwitchBK At
Passengers
Door33
Passenger
Power MirrorBL At
Passengers
Door33
Passenger
Power
Window MotorBK At
Passengers
Door33
Passenger
Power
Window
SwitchGY At
Passengers
Door33
Power Mirror
SwitchGY At Drivers
Door34
Power
Steering
Pressure
SwitchGY Left Rear of
Engine
CompartmentN/S
Powertrain
Control
Module - C1BK Left Fender
Side Shield21
Powertrain
Control
Module - C2BK Left Fender
Side Shield19
PRNDL Lamp BK At Center
Console25
Proportional
EVAP/Purge
SolenoidBK Left Rear of
Engine
Compartment19
Radiator Fan
MotorBK Front of
Engine
Compartment19Connector
Name/NumberColor Location Fig.
Radio - C1 BK Rear of Radio 24
Radio - C2 GY Rear of Radio 24
Rear Window
Defogger
SwitchBK Center of
Instrument
Panel24
Remote
Keyless Entry
ModuleBK Center of
Instrument
Panel24
Right Back-Up
LampBK At Lamp 31
Right City
LampGY At Lamp N/S
Right Front
Door SpeakerBK At Drivers
Door34
Right Front
Fog LampBK At Lamp N/S
Right Front
Turn Signal
LampNAT At Lamp 20
Right Front
Wheel Speed
SensorBK At Right Front
Wheel
Opening20
Right
HeadlampBK At Lamp 20
Right
Headlamp
Leveling MotorGY Rear of right
HeadlampN/S
Right
Instrument
Panel SpeakerBK At Speaker 25
Right License
LampNAT At Lamp 32
Right Rear
Door Lock
MotorBK At Motor 35
Right Rear
Fog LampGY At Lamp 32
Right Rear
SpeakerBK At Speaker 30
Right Rear
Turn Signal
LampGY At Lamp 31
Right Rear
Wheel Speed
SensorBL At Right Rear
Wheel
OpeningN/S
Right
Repeater
LampBL At Lamp 18
8W - 90 - 24 8W - 90 CONNECTOR/GROUND LOCATIONSPL
DESCRIPTION AND OPERATION (Continued)

Connector
Name/NumberColor Location Fig.
Right Tail/Stop
LampBK At Lamp 31
Seat Belt
SwitchBK Under Drivers
SeatN/S
Sentry Key
Immobilizer
ModuleBK Right Side of
Instrument
Panel25
Siren Left Front of
Vehicle18
Sunroof
Control
ModuleAt Sunroof N/S
Sunroof Motor At Sunroof N/S
Sunroof
SwitchBK At Switch N/S
Sunroof Vent
SwitchAt Switch N/S
Throttle
Position
SensorBK On Throttle
Body19
Torque
Converter
Clutch
Solenoid
(ATX)BK On
Transmission19Connector
Name/NumberColor Location Fig.
Traction
Control SwitchWT Center of
Instrument
Panel24
Trunk Key
Cylinder
SwitchGY On Decklid 36
Underhood
LampBK At Lamp N/S
Vehicle Speed
Control ServoBK At Left Front
Strut Tower19
Vehicle Speed
SensorBK On
Transmission22
Windshield
Washer PumpRD At Right Front
Wheel
Opening18
Wipe/Wash
SwitchGY Center of
Instrument
Panel25
Wiper Motor BK Right Side of
Engine
Compartment23
PL8W - 90 CONNECTOR/GROUND LOCATIONS 8W - 90 - 25
DESCRIPTION AND OPERATION (Continued)

8W-95 SPLICE LOCATIONS
DESCRIPTION AND OPERATION
INTRODUCTION
This section provides illustrations identifying the
general location of the splices in this vehicle. A splice
index is provided. Use the wiring diagrams in each
section for splice number identification. Refer to the
index for proper splice number.
SPLICE LOCATIONS (LHD)
The following index covers all splices shown in the
wiring diagrams. If a splice is not shown in this sec-
tion, a N/S will be in the Fig. column.
Spllice Location Fig.
S102 (Except
Built-Up-
Export)Near Left Headlamp T/O 2
S103 Left Side of Instrument
Panel3
S104 Left Side of Instrument
Panel3
S105
(Built-Up-
Export)Left Side of Instrument
Panel3
S106 Near Left Strut Tower 3
S107 Near A/C Low Pressure
Switch T/O3
S108 Near Controller Anti-Lock
Brake3
S109 Near Power Distribution
Center3
S110 Near Radiator Fan Motor
T/O3
S 111
(Built-Up-
Export)Same as S102 2
S112 Near Back-Up Lamp
Switch T/O3
S113 Near Throttle Position
Sensor T/O3
S114 Near Throttle Position
Sensor T/O3
S116
(Built-Up-
Export)Near C110 T/O 3
S117 Near Right Front Side
Marker or Right Repeater
Lamp T/O2
S118 Near Powertrain Control
Module - C2 T/O3Spllice Location Fig.
S119 Near Radiator Fan Motor
T/O3
S120
(Built-Up-
Export)Near Siren T/O 1
S121 Near Fuel Injector NO. 4
T/O4
S122 Near Engine Oil Pressure
Switch T/O5
S123 Near Crankshaft Position
Sensor T/O5
S125 Near Manifold Absolute
Pressure Sensor T/O4
S129 (2.0L) Near Noise Suppressor
T/O5
S130 Near Ignition Coil T/O 5
S131 Near Left Headlamp T/O 2
S132 Near Left Strut Tower 3
S141 Near High Note Horn T/O N/S
S142 Near High Note Horn T/O N/S
S201 Near Right Instrument
Panel Speaker T/O6
S202 Near C202 and C203
T/O6
S203 Near C202 and C203
T/O6
S204 In C202 and C203 T/O 6
S205 Near C202 and C203
T/O6
S206 Near Center of
Instrument Panel6
S207 Near Center of
Instrument Panel6
S208 Near Instrument Cluster
T/O6
PL8W - 95 SPLICE LOCATIONS 8W - 95 - 1

SPLICE LOCATIONS (RHD)
The following index covers all splices shown in the
wiring diagrams. If a splice is not shown in this sec-
tion, a N/S will be in the Fig. column.
Spllice Location Fig.
S103 Near C104 and C103
T/O19
S104 In Data Link Connector
T/O19
S105 Near Grommet 19
S106 Near Left Strut Tower 16
S107 Near Brake Warning
Indicator Switch T/O16
S108 In Controller Anti-Lock
Brake T/O16
S109 Near Power Distribution
Center16
S110 Near Radiator Fan Motor
T/O16
S111 Near Left Headlamp T/O 15
S112 Near Left Strut Tower 16
S113 Near Throttle Position
Sensor T/O16
S114 Near Idle Air Control
Motor T/O16
S116 Near C110 T/O 16
S117 Near Repeater Lamp T/O 15
S118 Near Powertrain Control
Module - C2 T/O16
S119 Near A/C High Pressure
Switch T/O16
S120 Near Siren T/O 14
S121 Near Fuel Injector NO. 4
T/O17
S122 Near Engine Oil Pressure
Switch T/O18
S123 Near Crankshaft Position
Sensor T/O18
S125 Near Manifold Absolute
Pressure Sensor T/O17
S129 (2.0L) Near Noise Suppressor
T/O18
S130 Near Ignition Coil T/O 18
S131 Right Front of Engine
Compartment15
S132 Near Left Strut Tower 16Spllice Location Fig.
S141 Near High Note Horn T/O N/S
S142 Near High Note Horn T/O N/S
S201 Near Left Instrument
Panel Speaker20
S202 Left Side of Instrument
Panel20
S203 Left Side of Instrument
Panel20
S204 Near C202 T/O 20
S205 Left Side of Instrument
Panel20
S206 Left Side of Instrument
Panel20
S207 Near Instrument Cluster
T/O20
S208 Near Instrument Cluster
T/O20
S209 Near Brake Shift
Interlock Solenoid T/ON/S
S211 Near Right Instrument
Panel Speaker T/O20
S212 Near Instrument Cluster
T/O20
S213 Near Instrument Cluster
T/O20
S214 Near Instrument Cluster
T/O20
S215 Near Right Instrument
Panel Speaker T/O20
S216 Near Right Instrument
Panel Speaker T/O20
S217 Near Right Instrument
Panel Speaker T/O20
S218 Near Right Instrument
Panel Speaker T/O20
S219 Near Right Instrument
Panel Speaker T/O20
S220 Near Right Instrument
Panel Speaker T/O20
S221 Near Right Instrument
Panel Speaker T/O20
PL8W - 95 SPLICE LOCATIONS 8W - 95 - 13
DESCRIPTION AND OPERATION (Continued)

ENGINE
TABLE OF CONTENTS
page page
STANDARD SERVICE PROCEDURES........... 1
ENGINE DIAGNOSIS........................ 82.0L SOHC ENGINE....................... 15
STANDARD SERVICE PROCEDURES
TABLE OF CONTENTS
page page
GENERAL INFORMATION
FORM-IN-PLACE GASKETS & SEALERS........1
ENGINE GASKET SURFACE PREPARATION.....2
CRANKSHAFT DAMPER BOLT ACCESS PLUG . . . 2
ENGINE CORE PLUGS.....................2
ENGINE PERFORMANCE...................3HONING CYLINDER BORES.................3
MEASURING WITH PLASTIGAGE.............4
REPAIR OF DAMAGED OR WORN THREADS....5
HYDROSTATIC LOCKED ENGINE.............5
CHECKING ENGINE OIL LEVEL..............6
ENGINE OIL SERVICE......................7
GENERAL INFORMATION
FORM-IN-PLACE GASKETS & SEALERS
There are numerous places where form-in-place
gaskets are used on the engine. Care must be taken
when applying form-in-place gaskets to assure
obtaining the desired results.Do not use form-in-
place gasket material unless specified.Bead size,
continuity, and location are of great importance. Too
thin a bead can result in leakage while too much can
result in spill-over which can break off and obstruct
fluid feed lines. A continuous bead of the proper
width is essential to obtain a leak-free gasket.
There are numerous types of form-in-place gasket
materials that are used in the engine area. Mopart
Engine RTV GEN II, MopartATF-RTV, and Mopart
Gasket Maker gasket materials, each have different
properties and can not be used in place of the other.
MOPARtENGINE RTV GEN II
MopartEngine RTV GEN II is used to seal com-
ponents exposed to engine oil. This material is a spe-
cially designed black silicone rubber RTV that
retains adhesion and sealing properties when
exposed to engine oil. Moisture in the air causes the
material to cure. This material is available in three
ounce tubes and has a shelf life of one year. After one
year this material will not properly cure. Alwaysinspect the package for the expiration date before
use.
MOPARtATF RTV
MopartATF RTV is a specifically designed black
silicone rubber RTV that retains adhesion and seal-
ing properties to seal components exposed to auto-
matic transmission fluid, engine coolants, and
moisture. This material is available in three ounce
tubes and has a shelf life of one year. After one year
this material will not properly cure. Always inspect
the package for the expiration date before use.
MOPARtGASKET MAKER
MopartGasket Maker is an anaerobic type gasket
material. The material cures in the absence of air
when squeezed between two metallic surfaces. It will
not cure if left in the uncovered tube. The anaerobic
material is for use between two machined surfaces.
Do not use on flexible metal flanges.
MOPARtBED PLATE SEALANT
MopartBed Plate Sealant is a unique (green-in-
color) anaerobic type gasket material that is specially
made to seal the area between the bedplate and cyl-
inder block without disturbing the bearing clearance
or alignment of these components. The material
cures slowly in the absence of air when torqued
between two metallic surfaces, and will rapidly cure
when heat is applied.
PLENGINE 9 - 1

will clean up a bore and maintain the required lim-
its.
(2) Deglazing of the cylinder walls may be done
using a cylinder surfacing hone, recommended tool
C-3501 or equivalent, equipped with 280 grit stones,
if the cylinder bore is straight and round. 20±60
strokes depending on the bore condition, will be suf-
ficient to provide a satisfactory surface. Inspect cyl-
inder walls after each 20 strokes, using a light
honing oil.Do not use engine or transmission oil,
mineral spirits or kerosene.
(3) Honing should be done by moving the hone up
and down fast enough to get a cross-hatch pattern.
When hone marksintersectat 50-60 degrees, the
cross hatch angle is most satisfactory for proper seat-
ing of rings (Fig. 4).
(4) A controlled hone motor speed between
200±300 RPM is necessary to obtain the proper cross-
hatch angle. The number of up and down strokes per
minute can be regulated to get the desired 50±60
degree angle. Faster up and down strokes increase
the cross-hatch angle.
(5) After honing, it is necessary that the block be
cleaned again to remove all traces of abrasive.
CAUTION: Ensure all abrasives are removed from
engine parts after honing. It is recommended that a
solution of soap and hot water be used with a
brush and the parts then thoroughly dried. The bore
can be considered clean when it can be wiped
clean with a white cloth and cloth remains clean.
Oil the bores after cleaning to prevent rusting.MEASURING WITH PLASTIGAGE
PLASTIGAGE METHOD
Engine crankshaft bearing clearances can be deter-
mined by use of Plastigage or equivalent. The follow-
ing is the recommended procedure for the use of
Plastigage:
NOTE: The total clearance of the main bearings can
only be determined by removing the weight of the
crankshaft. This can be accomplished by either of
two methods:
PREFERRED METHOD
Shim the bearings adjacent to the bearing to be
checked in order to remove the clearance between
upper bearing shell and the crankshaft. This can be
accomplished by placing a minimum of 0.254 mm
(0.010 in.) shim (e. g. cardboard, matchbook cover,
etc.) between the bearing shell and the bearing cap
on the adjacent bearings and tightening bolts to
14-20 N´m (10-15 ft. lbs.). The number of main bear-
ing will vary from engine to engine.
ENGINE WITH 5 MAIN BEARINGS
²When checking #1 main bearing shim #2 main
bearing.
²When checking #2 main bearing shim #1 & 3
main bearing.
²When checking #3 main bearing shim #2 & 4
main bearing.
²When checking #4 main bearing shim #3 & 5
main bearing.
²When checking #5 main bearing shim #4 main
bearing.
ENGINE WITH 4 MAIN BEARING
²When checking #1 main bearing shim # 2 main
bearing.
Fig. 4 Cylinder Bore Cross-Hatch Pattern
1 ± CROSS-HATCH PATTERN
Fig. 5 Plastigage Placed in Lower Shell
1 ± PLASTIGAGE
9 - 4 ENGINEPL
GENERAL INFORMATION (Continued)

ENGINE OIL SERVICE
WARNING: NEW OR USED ENGINE OIL CAN BE
IRRITATING TO THE SKIN. AVOID PROLONGED OR
REPEATED SKIN CONTACT WITH ENGINE OIL.
CONTAMINANTS IN USED ENGINE OIL, CAUSED BY
INTERNAL COMBUSTION, CAN BE HAZARDOUS TO
YOUR HEALTH. THOROUGHLY WASH EXPOSED
SKIN WITH SOAP AND WATER. DO NOT WASH
SKIN WITH GASOLINE, DIESEL FUEL, THINNER, OR
SOLVENTS, HEALTH PROBLEMS CAN RESULT. DO
NOT POLLUTE, DISPOSE OF USED ENGINE OIL
PROPERLY. CONTACT YOUR DEALER OR GOVERN-
MENT AGENCY FOR LOCATION OF COLLECTION
CENTER IN YOUR AREA.
ENGINE OIL SPECIFICATION
CAUTION: Do not use non-detergent or straight
mineral oil when adding or changing crankcase
lubricant. Engine failure can result.
API SERVICE GRADE CERTIFIED
Use an engine oil that is API Service Grade Certi-
fied. MOPARtprovides engine oils that conforms to
this service grade.
SAE VISCOSITY
An SAE viscosity grade is used to specify the vis-
cosity of engine oil. Use only, engine oils with multi-
ple viscosities such as 5W-30 or 10W-30. These are
specified with a dual SAE viscosity grade which indi-
cates the cold-to-hot temperature viscosity range.
SAE 5W-30 engine oil is preferred. Select an engine
oil that is best suited to your particular temperature
range and variation (Fig. 9).
ENERGY CONSERVING OIL
An Energy Conserving type oil is recommended for
gasoline engines. The designation of ENERGY CON-
SERVING is located on the label of the engine oil
container.
CONTAINER IDENTIFICATION
Standard engine oil identification notations have
been adopted to aid in the proper selection of engine
oil. The identifying notations are located on the label
of engine oil plastic bottles and the top of engine oil
cans (Fig. 10).
ENGINE OIL CHANGE
Change engine oil at mileage and time intervals
described in the Group 0, Lubrication and Mainte-
nance.TO CHANGE ENGINE OIL
Run engine until achieving normal operating tem-
perature.
(1) Position the vehicle on a level surface and turn
engine off.
(2) Hoist and support vehicle on safety stands.
Refer to Group 0, Lubrication and Maintenance for
Hoisting and Jacking Recommendations.
(3) Remove oil fill cap.
(4) Place a suitable drain pan under crankcase
drain.
(5) Remove drain plug from crankcase and allow
oil to drain into pan. Inspect drain plug threads for
stretching or other damage. Replace drain plug and
gasket if damaged.
(6) Install drain plug in crankcase.
(7) Lower vehicle and fill crankcase with specified
type and amount of engine oil described in this sec-
tion.
(8) Install oil fill cap.
(9) Start engine and inspect for leaks.
(10) Stop engine and inspect oil level.
Fig. 9 Temperature/Engine Oil Viscosity
Fig. 10 Engine Oil Container Standard Notations
PLENGINE 9 - 7
GENERAL INFORMATION (Continued)

ENGINE DIAGNOSIS
TABLE OF CONTENTS
page page
DIAGNOSIS AND TESTING
GENERAL INFORMATION...................8
INTAKE MANIFOLD LEAKAGE DIAGNOSIS......8
CYLINDER COMPRESSION PRESSURE TEST . . . 8
CYLINDER COMBUSTION PRESSURE
LEAKAGE TEST.........................9LASH ADJUSTER (TAPPET) NOISE
DIAGNOSIS............................9
ENGINE OIL LEAK INSPECTION..............9
ENGINE DIAGNOSISÐPERFORMANCE........11
ENGINE DIAGNOSISÐMECHANICAL.........12
DIAGNOSIS AND TESTING
GENERAL INFORMATION
Engine diagnosis is helpful in determining the
causes of malfunctions not detected and remedied by
routine maintenance.
These malfunctions may be classified as either
mechanical (e.g., a strange noise), or performance
(e.g., engine idles rough and stalls).
Refer to the Service DiagnosisÐMechanical Chart
and the Service DiagnosisÐPerformance Chart, for
possible causes and corrections of malfunctions. Refer
to Group 14, Fuel System, for the fuel system diag-
nosis.
Additional tests and diagnostic procedures may be
necessary for specific engine malfunctions that can-
not be isolated with the Service Diagnosis charts.
Information concerning additional tests and diagno-
sis is provided within the following:
²Cylinder Compression Pressure Test
²Cylinder Combustion Pressure Leakage Test
²Engine Cylinder Head Gasket Failure Diagnosis
²Intake Manifold Leakage Diagnosis
INTAKE MANIFOLD LEAKAGE DIAGNOSIS
An intake manifold air leak is characterized by
lower than normal manifold vacuum. Also, one or
more cylinders may not be functioning.
WARNING: USE EXTREME CAUTION WHEN THE
ENGINE IS OPERATING. DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR
HANDS NEAR THE PULLEYS, BELTS OR THE FAN.
DO NOT WEAR LOOSE CLOTHING.
(1) Start the engine.
(2) Spray a small stream of water (Spray Bottle) at
the suspected leak area.
(3) If engine RPM'S change, the area of the sus-
pected leak has been found.
(4) Repair as required.
CYLINDER COMPRESSION PRESSURE TEST
The results of a cylinder compression pressure test
can be utilized to diagnose several engine malfunc-
tions.
Ensure the battery is completely charged and the
engine starter motor is in good operating condition.
Otherwise the indicated compression pressures may
not be valid for diagnosis purposes.
(1) Check engine oil level and add oil if necessary.
(2) Drive the vehicle until engine reaches normal
operating temperature. Select a route free from traf-
fic and other forms of congestion, observe all traffic
laws, and accelerate through the gears several times
briskly.
(3) Remove all spark plugs from engine. As spark
plugs are being removed, check electrodes for abnor-
mal firing indicators fouled, hot, oily, etc. Record cyl-
inder number of spark plug for future reference.
(4) Disconnect coil wire from distributor and
secure to good ground to prevent a spark from start-
ing a fire (Conventional Ignition System). For Direct
Ignition System DIS disconnect the coil connector.
(5) Be sure throttle blade is fully open during the
compression check.
(6) Insert compression gage adaptor into the #1
spark plug hole in cylinder head. Crank engine until
maximum pressure is reached on gage. Record this
pressure as #1 cylinder pressure.
(7) Repeat the previous step for all remaining cyl-
inders.
(8) Compression should not be less than (689 kPa)
100 psi and not vary more than 25 percent from cyl-
inder to cylinder.
(9) If one or more cylinders have abnormally low
compression pressures, repeat the compression test.
(10) If the same cylinder or cylinders repeat an
abnormally low reading on the second compression
test, it could indicate the existence of a problem in
the cylinder in question.The recommended com-
pression pressures are to be used only as a
guide to diagnosing engine problems. An engine
9 - 8 ENGINEPL