Fuel And Exhaust Systems - Fuel-Injected Models; Litre Models: 8-Valve Models; To 990 Rpm; To 880 Rpm - Opel Kadett Owner's Manual

Chapter 4 Part B:

Fuel and exhaust systems - fuel-injected models

Contents
Accelerator cable - removal, refitting and adjustment . . . . . . . . . . . . .3
Air cleaner filter element renewal . . . . . . . . . . . . . . . . . .See Chapter 1
Air cleaner housing - removal and refitting . . . . . . . . . . . . . . . . . . . . . .2
Exhaust manifold - removal and refitting . . . . . . . . . . . . . . . . . . . . . .14
Exhaust system - removal and refitting . . . . . . . . . . . . . . . . . . . . . . .15
Exhaust system check . . . . . . . . . . . . . . . . . . . . . . . . . . .See Chapter 1
Fuel filter renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .See Chapter 1
Fuel gauge sender unit - removal and refitting . . . . . . . . . . . . . . . . . . .8
Fuel injection system - general information . . . . . . . . . . . . . . . . . . . . .5
Fuel injection system - testing and adjustment . . . . . . . . . . . . . . . . .10
Fuel pump - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Degrees of difficulty
Easy, suitable for Fairly easy, suitable
novice with little for beginner with
experience some experience
Specifications
System type
1.4 and 1.6 litre models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.8 litre models:
Early (18E engine) models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Later (18SE engine) models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.0 litre models:
8-valve models:
Early (Pre 1990) models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Later (1990 on) models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16-valve models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel pump
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pressure:
1.4 and 1.6 litre models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.8 and 2.0 litre models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustment data
Idle speed:
1.4 litre models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.6 litre models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.8 litre models:
Early (pre 1990) models:
Manual transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Automatic transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Later (1990 on) models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.0 litre models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exhaust gas CO content (at idle) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
*On models equipped with a catalytic converter the exhaust gas CO content is regulated by the control unit and is not adjustable
Recommended fuel
Minimum octane rating:
Models without a catalytic converter . . . . . . . . . . . . . . . . . . . . . . . . .
Models with a catalytic converter . . . . . . . . . . . . . . . . . . . . . . . . . . . .
*If the necessary precautions are taken, 95 RON unleaded (unleaded premium) petrol can be used (see Section 4 for details)
Fuel system - depressurisation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Fuel tank - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
General fuel system checks . . . . . . . . . . . . . . . . . . . . . .See Chapter 1
General information and precautions . . . . . . . . . . . . . . . . . . . . . . . . . .1
Idle speed and mixture adjustment information . . . . . . .See Chapter 1
Inlet manifold - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . .13
Multi-point fuel injection system components (1.8 and 2.0 litre
models) - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Single point fuel injection system components (1.4 and 1.6 litre
models) - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Unleaded petrol - general information and usage . . . . . . . . . . . . . . . .4
Fairly difficult, Difficult, suitable for
suitable for competent experienced DIY
DIY mechanic mechanic
Multec CFI (single-point injection)
Bosch LE Jetronic (multi-point injection)
Bosch L3 Jetronic (multi-point injection)
Bosch Motronic ML4.1 (multi-point injection)
Bosch Motronic M1.5 (multi-point injection)
Bosch Motronic M2.5 (multi-point injection)
Electric
1.0 bar
2.5 bar

830 to 990 rpm

720 to 880 rpm

900 to 950 rpm

800 to 850 rpm

800 to 900 rpm

720 to 780 rpm (not adjustable - regulated by control unit)

Less than 1.0%*

98 RON leaded (4-star) or unleaded (Super unleaded)*
95 RON unleaded (Unleaded premium) only
4B•1
Very difficult,
suitable for expert
DIY or professional
4B