90-824052R3 JUNE 2002
FUEL SYSTEMS - 3C-31
Injector Electrical Harness Test
Purpose: This test will determine if electrical or fuel
delivery problem exists during the fuel
delivery
process by checking for open circuits
in injector harness.
Procedure: STEP 1: With outboard in water, start
and allow to warm up. Raise engine
speed to 2000-2500 RPM. Remove spark
plug leads one at a time and note RPM
change. Determine non-working (no
RPM change) cylinder. Stop engine.
STEP 2: Disconnect injector harness (4 pin
connector).
IMPORTANT: Use digital ohmmeter when testing
injector harness.
STEP 3: Connect digital ohmmeter (dial set at
200 scale) leads. Positive lead from
ohmmeter connects to positive prong “2”
(red wire) of harness connector. Connect
negative lead from ohmmeter to the
remaining wires of harness connector as
follows:
WHITE Lead = Injectors, Cylinders 1 and 2
DARK BLUE Lead = Injectors, Cylinders 3 and 4
YELLOW = Injectors, Cylinders 5 and 6
1
2
3
4
50326
(1) YELLOW
(2) RED
(3) DARK BLUE
(4) WHITE
Results: If readings are 1.1
±
.2 both injector circuits
are complete. Perform Injector Fuel Delivery
Test.
If readings are 2.2
±
.2 one injector does not have
a complete circuit. Perform induction manifold
disassembly and inspection following.
Injector Fuel Delivery Test
CAUTION
CAUTION: Switch boxes must be grounded to
engine block if removed for fuel delivery test to
prevent possible damage to ignition system.
Purpose: This test will determine if injector is deliver-
ing fuel when signal is received.
Procedure: STEP 1: Place outboard in water,
start engine and allow to warm up. Raise
engine speed to 2000-2500 RPM.
Remove spark plug leads one at a time
and note RPM change. Determine
non-working cylinder (no RPM change).
STEP 2: Using squirt bottle of fuel and hose,
inject small amount of fuel into cylinder
bleed fitting (a) on non-working cylinder.
NOTE: Switch box panel and lube alert control box
may have to be shifted to the side to allow bleed fitting
connection. Ground boxes to motor as required.
a
a
a
50342
Summary of Contents for 105/140 JET
Page 5: ...1 A IMPORTANT INFORMATION SPECIFICATIONS...
Page 14: ...1 B IMPORTANT INFORMATION MAINTENANCE...
Page 25: ...C 1 IMPORTANT INFORMATION GENERAL INFORMATION...
Page 34: ...D 1 B A D C IMPORTANT INFORMATION OUTBOARD MOTOR INSTALLATION...
Page 50: ...A 2 ELECTRICAL IGNITION SYSTEM...
Page 79: ...2A 28 ELECTRICAL 90 824052R3 JUNE 2002 SPARK PLUG WIRE ROUTING HIGH PERFORMANCE OUTBOARDS...
Page 80: ...B 2 51797 ELECTRICAL BATTERY CHARGING SYSTEM AND STARTING SYSTEM...
Page 101: ...C 2 ELECTRICAL TIMING SYNCHRONIZING ADJUSTING...
Page 117: ...D 2 ELECTRICAL WIRING...
Page 133: ...90 824052R3 JUNE 2002 ELECTRICAL 2D 15 Notes...
Page 149: ...A 3 FUEL SYSTEMS FUEL PUMP...
Page 159: ...B 3 54350 FUEL SYSTEMS CARBURETORS...
Page 161: ...90 824052R3 JUNE 2002 FUEL SYSTEMS 3B 1 Notes...
Page 206: ...C 3 FUEL SYSTEMS FUEL INJECTION SN 0G303045 AND BELOW...
Page 213: ...1 2 3 4 5 6 7 8 3C 6 FUEL SYSTEMS 90 824052R3 JUNE 2002 Fuel Management System...
Page 272: ...D 3 55173 FUEL SYSTEMS FUEL INJECTION SN 0G303046 AND ABOVE...
Page 344: ...E 3 FUEL SYSTEMS OIL INJECTION...
Page 370: ...4 51804 A POWERHEAD...
Page 418: ...90 824052R3 JUNE 2002 POWERHEAD 4A 47 Notes...
Page 429: ...4 51804 B POWERHEAD COOLING...
Page 434: ...4B 4 POWERHEAD 90 824052R3 JUNE 2002 Notes...
Page 436: ...90 824052R3 JUNE 2002 4B 6 POWERHEAD...
Page 441: ...A 5 MID SECTION CLAMP SWIVEL BRACKET AND DRIVESHAFT HOUSING...
Page 443: ...90 824052R3 JUNE 2002 MID SECTION 5A 1 Notes...
Page 457: ...B 5 MID SECTION POWER TRIM SQUARE MOTOR AND ROUND MOTOR DESIGN...
Page 495: ...A 6 LOWER UNIT E Z SHIFT GEAR HOUSING STANDARD ROTATION...
Page 554: ......
Page 555: ...B 6 LOWER UNIT COUNTER ROTATING LEFT HAND GEAR CASE...
Page 616: ...C 6 LOWER UNIT MERCURY XR6 MARINER MAGNUM III GEAR HOUSING...
Page 651: ...D 6 LOWER UNIT E Z SHIFT GEAR HOUSING NON RATCHETING STANDARD ROTATION STARTING S N 0G438000...
Page 657: ...90 824052R3 JUNE 2002 LOWER UNIT 6D 5 Notes...
Page 697: ...90 824052R3 JUNE 2002 LOWER UNIT 6E 5 Notes...
Page 740: ...6 F JET OUTBOARDS...
Page 742: ...90 824052R3 JUNE 2002 JET OUTBOARDS 6F 1 Notes...
Page 759: ...7 ATTACHMENTS CONTROL LINKAGE...