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CHAPTER 3 ENGINE
3.5.6.4 Fuel Quality Requirements
● Pb≤0.005g/L
● P≤0.0002g/L
● S≤0.04% (weight proportion)x
● MMT≤0.0085g/L
● Si≤4ppm
3.5.7 Ignition Coil
3.5.7.1 Description and Working Principle
This coil provides energy to the spark plug in the combustion chamber. The coil itself doesn't
have a driver. The high voltage tower of the coil is connected to the spark plug using a high
voltage cable assembly.
3.5.7.2 Appearance
3.5.7.3 Installation requirements
● The vehicle frame provides the mounting surface and mounting holes.
● Mount coil close to the spark plug and keep the plug wire length very short (less than 6 ").
● Mount coil away from any pick coil device. Especially, a VR type Crank / Cam sensor. Keep a
Min distance of 150 mm (around 6") between coil and any VR sensor device.
● Never route the coil C- wire with the same bundle as the Crank sensor wires. There is around
200 V peak potential between C- wire and engine ground. This voltage potential could cause a
noise on sensor cables.
3.5.7.4 DOs and DONTs
DO NOT: Install the low voltage connectors with the
power applied.
DO NOT: Use a screw driver to asset in removing
secondary boots from the secondary tower. Use
tools designed for secondary removal.
DO NOT: Use parts that have been dropped or
display physical damage.
DO NOT: Scratch or apply any non approved
material to the surface of the high voltage tower
which mates with the high voltage secondary leads.
ACTION
T-Boss550 SERVICE MANUAL20.0
REASON
This might cause an unwanted secondary firing,
possibly leading to personal injury.
It is possible to damage a secondary lead in such a
manner that creates an electrical path to outside the
system
permitting
improper
misfire, or even possible personal injury if arcing
occurs.
Damaged components can lead to premature failure.
This can jeopardize the seal integrity of the mating
surfaces which in turn can create a secondary high
voltage leak path.
system
operation
CHAPTER 3 ENGINE
PAGE. 3- 110
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