Section 07 ENGINE MANAGEMENT (DI)
Subsection 02 (COMPONENT INSPECTION AND ADJUSTMENT)
A00E09A
12
1. Cold
2. Hot
CAUTION: Severe engine damage might occur
if a wrong heat range plug is used.
Atoo“hot” plug will result in overheating and pre-
ignition, etc.
Atoo“cold” plug will result in fouling or may cre-
ate carbon build up which can heat up red-hot and
cause pre-ignition or detonation.
Fouling
Fouling of the spark plug is indicated by irregular
running of the engine, decreased engine speed
due to misfiring, reduced performance, and in-
creased fuel consumption. This is due to a loss
of compression. Other possible causes are: pro-
longed idling, or running on a too rich mixture or
incorrect fuel. The plug face of a fouled spark plug
has either a dry coating of soot or an oily, glossy
coating given by an excess either of oil or of oil
with soot. Such coatings form a conductive con-
nection between the center electrode and ground.
Spark Plug Installation
Prior to installation make sure that contact sur-
faces of the cylinder head and spark plug are free
of grime.
– Using a wire feeler gauge, set electrode gap
according to the following chart.
– Apply anti-seize lubricant over the spark plug
threads to prevent possible seizure.
– Hand screw spark plug into cylinder head.
Then, tighten the spark plug clockwise an addi-
tional 1/4 turn with a proper socket.
A00E0BA
2
1
1. Proper socket
2. Improper socket
ENGINE
SPARK
PLUG
TORQUE
GAP
mm (in)
DI
NGK
ZFR4F-11
Hand tighten
+ 1/4 turn
with a socket
1.1
(.043)
CRANKING SYSTEM
See above for start/stop switch and the DESS post
testing. Refer to STARTING SYSTEM section for
other tests.
DI SYSTEM TEST SUMMARY
Pressure Tests
COMPONENT
VALUE
kPa (PSI)
Air compressor 621 ± 14 (90 ± 2) at cranking
Fuel pressure
regulator
185 ± 14 (27 ± 2) when
installing safety lanyard
Fuel pressure
738 ± 14 (107 ± 2) inline
test at cranking or when
engine is running
Fuel pump 721 (105) minimum at cranking
smr2004-Complete Line Up 373
To Next Page
Loading...
Need help?
General
