Electronic (Breakerless) Ignition Systems - Opel Kadett Owner's Manual

Chapter 5 Part C:

Electronic (breakerless) ignition systems

Contents
Distributor - overhaul . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Distributor - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Ignition HT coil - removal, testing and refitting . . . . . . . . . . . . . . . . . . .6
Degrees of difficulty
Easy, suitable for Fairly easy, suitable
novice with little for beginner with
experience some experience
Specifications
General
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System type:
1.3 and 1.4 litre carburettor models . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4 and 1.6 litre fuel injection models . . . . . . . . . . . . . . . . . . . . . . . . .
1.6 litre carburettor models:
16SH engine models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16SV engine models:
Pre 1988 models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1989 onwards models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.8 litre models:
18E engine models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18SE engine models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.0 litre models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Firing order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rotational direction of distributor rotor arm . . . . . . . . . . . . . . . . . . . . . .
Ignition timing
At idle (with vacuum pipe disconnected - early models only):
1.4 litre models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
All other models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition coil
Primary winding resistance (approximate) . . . . . . . . . . . . . . . . . . . . . . .
Secondary winding resistance (approximate) . . . . . . . . . . . . . . . . . . . . .
Torque wrench settings
Spark plugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 General information
1.3 and 1.4 litre carburettor models
On all 1.3 litre models a Delco breakerless
electronic ignition system is used. The system
comprises solely of the HT ignition coil and
the distributor, the distributor being driven off
the end of the camshaft.
Ignition module (control unit) - removal and refitting . . . . . . . . . . . . . .7
Ignition system check . . . . . . . . . . . . . . . . . . . . . . . . . . .See Chapter 1
Ignition system - testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Ignition timing - adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Fairly difficult,
suitable for competent
DIY mechanic
Breakerless electronic ignition system
AC Delco system
Multec MSTS-h Hall effect trigger, microprocessor controlled advance
(integral with Multec CFi system)
Hall effect trigger distributor
Inductive trigger, microprocessor controlled advance type MZV
Hall effect trigger, microprocessor controlled advance type E1 Plus
(also known as EZ Plus)
Hall effect trigger distributor
Inductive trigger, microprocessor controlled advance type E1 61
(formerly known as EZ 61)
Inductive trigger, microprocessor controlled advance (integral with
Bosch Motronic system)
1-3-4-2 (No 1 at timing belt end of engine)
Anti-clockwise (viewed from cap)
5º BTDC
10º BTDC
1.2 to 1.6 ohm
7k ohms
Nm
20
The distributor contains an induction
sensor (reluctor) mounted onto its shaft and
an ignition module (pick-up) fixed to its body.
The system operates as follows.
When the ignition is switched on but the
engine is stationary the transistors in the
module prevent current flowing through the
ignition system primary (LT) circuit.
As the crankshaft rotates, the induction
sensor moves through the magnetic field
created by the module. When the teeth are in
alignment with the module projections a small
Difficult, suitable for Very difficult,
experienced DIY suitable for expert
mechanic DIY or professional
lbf ft
15
AC voltage is created. The module uses this
voltage to switch the transistors in the unit and
complete the ignition system primary (LT) circuit.
As the teeth move out of alignment with the
module projections the AC voltage changes
and the transistors are switched again to
interrupt the primary (LT) circuit. This causes a
high voltage to be induced in the coil
secondary (HT) windings which then travels
down the HT lead to the distributor and onto
the relevant spark plug.
5C•1
5C