Ford Sierra Manual

Specifications
Fuel and exhaust systems - fuel injection / Specifications


General
Fuel tank capacity (all models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60.0 litres (13.1 gallons) Fuel octane rating:
Leaded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 RON (4-star) Unleaded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 RON (Premium) *Models fitted with a catalytic converter must be operated on unleaded fuel at all times. Do not use leaded fuel in such models, as the catalyst will be destroyed:
System control pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5 bar System type:
2.0 litre SOHC models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bosch L-Jetronic 2.0 litre DOHC models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Multi-point fuel injection system, controlled by EEC IV engine management system
1.6 and 1.8 litre (R6A type) CVH models . . . . . . . . . . . . . . . . . . . . . . . . Central fuel injection (CFI) controlled by EEC IV engine management system
Idle adjustments
All models except 2.0 litre DOHC Idle speed (dependent on idle speed adjustment wire): Manual gearbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 875 rpm
Automatic transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 800 rpm
Idle mixture (CO content) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 to 1.0% 2.0 litre DOHC
Idle speed (not adjustable) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 875 + 50 rpm Idle mixture (CO content) - models without catalytic converter . . . . . . . 1.0 to 1.5%
Torque wrench settings Nm lbf ft 2.0 litre SOHC models
Refer to Chapter 4, Part A Specifications for items not listed here Fuel pressure regulator fuel feed union nut . . . . . . . . . . . . . . . . . . . . . . 15 to 20 11 to 15 Fuel pressure regulator securing nut . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 to 25 15 to 18 Fuel rail securing bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 to 10 6 to 7 Idle speed control valve nuts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 to 10 6 to 7 2.0 litre DOHC models
Inlet manifold nuts and bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 to 24 15 to 18 Exhaust manifold nuts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 to 25 15 to 18 Exhaust gas oxygen sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 to 70 37 to 52 Throttle body bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 to 11 7 to 8 Fuel rail bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 to 26 15 to 19 Idle speed control valve bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 to 11 7 to 8 Fuel pressure regulator bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 to 12 7 to 9 Fuel filter unions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 to 20 10 to 15 1.6 and 1.8 litre (R6A type) CVH models Inlet manifold nuts and bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 to 20 12 to 15 Exhaust manifold nuts:
1.6 litre . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 to 17 10 to 13 1.8 litre . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 to 27 15 to 20 Exhaust downpipe-to-manifold nuts . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 to 40 26 to 30 CFI unit bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 to 11 7 to 8 Exhaust gas oxygen sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 to 70 37 to 52 EGR valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 to 30 15 to 22 Fuel filter unions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 to 20 10 to 15 Pulse-air tube unions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 to 35 21 to 26


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