Dodge Viper SRT-10 (ZB). Manual — part 70
(6) Twist and remove the ignition cables from the
ignition coil.
(7) Remove the 4 bolts (Fig. 9).
(8) Remove ignition coil.
INSTALLATION
The system uses two epoxy filled coil packs
mounted on engine block post (Fig. 10) under the
intake manifold. The rear coil pack, contains 3 sepa-
rate coils and fires cylinders 1, 2, 3, 4, 6, and 7. The
front coil pack, contains 2 individual coils and fires
cylinders 5, 8, 9, and 10.
(1) Install coil packs. Tighten mounting screws to
11 N·m (95 in. lbs.) torque.
(2) Install ignition cables to ignition coil.
(3) Connect and lock the electrical connector at the
ignition coils (Fig. 7) and (Fig. 8).
(4) Install Intake Manifold, refer to the Engine/
Manifolds/Intake Manifold for more information.
(5) Install Air Cleaner Assembly, refer to the
Engine/Air Intake section for more information.
(6) Connect the negative battery cable.
(7) Use the DRBIII
t Scan Tool ASD Fuel System
Test to pressurize the fuel system. Check for leaks.
Fig. 8 REAR COIL ELECTRICAL CONNECTOR
Fig. 9 IGNITION COILS
Fig. 10 COIL MOUNTING POST
8I - 6
IGNITION CONTROL
ZB
IGNITION COIL (Continued)
SPARK PLUG
DESCRIPTION
The 8.3L V-10 engine uses resistor spark plugs.
They have resistance values of 6,000 to 20,000 ohms
when checked with at least a 1000 volt tester.
OPERATION
Remove the spark plugs and examine them for
burned electrodes and fouled, cracked or broken por-
celain insulators. Keep plugs arranged in the order
in which they were removed from the engine. An iso-
lated plug displaying an abnormal condition indicates
that a problem exists in the corresponding cylinder.
Spark plugs that have low mileage may be cleaned
and reused if not otherwise defective. Adjust the gap
between the electrodes (Fig. 11) to the dimensions
specified in the chart at the end of this section.
Always tighten spark plugs to the specified torque.
Over tightening can cause distortion resulting in a
change in the spark plug gap. Tighten spark plugs to
27 N·m (20 ft. lbs.) torque.
REMOVAL
Failure to route the cables properly could cause the
radio to reproduce ignition noise, cross ignition of the
spark plugs or short circuit the cables to ground.
Always remove the spark plug cable by grasping
the top of the spark plug insulator, turning the boot
1/2 turn and pulling straight up in a steady motion.
(1) Remove the spark plug using a quality socket
with a rubber or foam insert.
INSTALLATION
Failure to route the cables properly could cause the
radio to reproduce ignition noise, cross ignition of the
spark plugs or short circuit the cables to ground.
(1) To avoid cross threading, start the spark plug
into the cylinder head by hand.
(2) Tighten spark plugs to 27 N·m (20 ft. lbs.)
torque.
(3) Install spark plug insulators over spark plugs.
SPARK PLUG CABLE
DESCRIPTION
Spark Plug cables are sometimes referred to as
secondary ignition wires. The wires transfer electri-
cal current from the electronic ignition coils to the
individual spark plug at each cylinder. The nonmetal-
lic spark plug cables have built in resistance. The
cables provide suppression of radio frequency emis-
sions from the ignition system.
Check the spark plug cable connections for good
contact at the coil or coil pack and at the spark
plugs. Terminals should be fully seated with audible
click. The nipples and spark plug covers should be in
good condition. Nipples should fit tightly on the coil
or coil pack and spark plug cover should fit tight
around spark plug insulators. Loose cable connec-
tions can cause ignition malfunctions, corroding, and
increasing resistance. To maintain proper sealing
at the terminal connections, the connections
should not be broken unless testing indicates
high resistance, an open circuit or other dam-
age.
Clean high tension cables with a cloth moistened
with a non-flammable solvent and wipe dry. Check
for brittle or cracked insulation. Plastic clips in vari-
ous locations protect the cables from damage. When
the cables are replaced the clips must be used to pre-
vent damage to the cables.
REMOVAL
Failure to route the cables properly could cause the
radio to reproduce ignition noise, cross ignition of the
spark plugs or short circuit the cables to ground.
(1) Release the fuel pressure, refer to the Fuel
Pressure Release procedure in the Fuel Delivery sec-
tion.
(2) Disconnect the negative battery cable.
(3) Remove the air cleaner assembly, refer to the
Engine/Air Intake section for more information.
(4) Remove the Intake Manifold, refer to the
Engine/Manifolds/Intake Manifold for more informa-
tion.
(5) Use the following procedure when removing the
high tension cable from the spark plug. Grasp the
Fig. 11 Setting Spark Plug Electrode Gap—Typical
1 - TAPER GAUGE
ZB
IGNITION CONTROL
8I - 7
terminal as close as possible to the spark plug.
Rotate the cover boot 1/2 turn slightly and pull
straight up in a steady motion.Do not use pliers
and do not pull the cable at an angle. Doing so
will damage the insulation, cable terminal or the
spark plug insulator. Wipe spark plug insulator
clean before reinstalling cable.
(6) Remove spark plug cable from coil first.
(7) Always remove the spark plug cable by grasp-
ing the top of the spark plug insulator, turning the
boot 1/2 turn and pulling straight up in a steady
motion.
INSTALLATION
Failure to route the cables properly (Fig. 12) could
cause the radio to reproduce ignition noise, cross
ignition of the spark plugs or short circuit the cables
to ground.
The system uses two epoxy filled coil packs
mounted on engine block post in the valley under the
intake manifold. The rear coil pack, contains 3 sepa-
rate coils and fires cylinders 1, 2, 3, 4, 6, and 7. The
front coil pack, contains 2 individual coils and fires
cylinders 5, 8, 9, and 10.
NOTE: When replacing the spark plug and coil
cables, route the cables correctly and secure them
in the proper retainers. Failure to route the cables
properly may cause the radio to reproduce ignition
noise. It could also cause cross-ignition of the
plugs, or, may short-circuit the cables to ground.
(1) Install wire separator clip on double ended
stud on rear of engine block first. This is the wire
separator clip closest to the ignition coil insulator
boots.
(2) Connector coil insulator boots over respective
ignition coil side post. Take care to match cylinder
number on ignition coil with cylinder number on
ignition cables. Also, make sure to hear the audible
click while making the connection to the coil post.
(3) Sequentially install wires into separators clips
mounted on double ended studs mounted on the
outer side of valve cover (Fig. 13) and (Fig. 14) and
(Fig. 15). Start from the rear and work forward to
the front of the engine.
(4) After installing all wires into separator clips,
install spark plug insulator boots over respective
spark plugs sequentially from back of engine towards
the front of engine. Make sure to hear the audible
click during installation of spark plug boots.
Fig. 12 IGNITION CABLE ROUTING
Fig. 13 IGNITION CABLE ROUTING
Fig. 14 IGNITION CABLE ROUTING
8I - 8
IGNITION CONTROL
ZB
SPARK PLUG CABLE (Continued)
(5) Install Intake Manifold, refer to the Engine/
Manifolds/Intake Manifold for more information.
(6) Install Air Cleaner Assembly, refer to the
Engine/Air Intake section for more information.
(7) Connect the negative battery cable.
(8) Use the DRBIII
t Scan Tool ASD Fuel System
Test to pressurize the fuel system. Check for leaks.
STARTER BUTTON
REMOVAL
(1) Remove the center bezel (Fig. 16) (Refer to 23 -
BODY/INSTRUMENT
PANEL/INSTRUMENT
PANEL CENTER BEZEL - REMOVAL).
(2) Squeeze the tabs on the switch (Fig. 17).
Fig. 15 IGNITION CABLE ROUTING
1 - Fuel Test Port
2 - Fuel Rail
3 - Fuel Injector
4 - Spark Plug Cables
Fig. 16 START BUTTON LOCATION
Fig. 17 START BUTTON CLIPS
ZB
IGNITION CONTROL
8I - 9
SPARK PLUG CABLE (Continued)
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