03 · General

Engine - lubrication

Make: MG
Model: TF Factory Workshop Manual
Year: 2002–2005
Section: General data › Engine - lubrication

General data, torque settings and capacitiesEngine - lubrication

ENGINE - LUBRICATION

System type	Wet sump, crankshaft driven eccentric rotor pump
Pump outer rotor to housing clearance	0.28 - 0.36 mm
Pump inner rotor tip clearance	0.05 - 0.13 mm
Pump rotor end-float	0.02 - 0.06 mm
Relief valve opening pressure	4.1 bar
Oil pressure at idle	1.7 to 3.5 bar
Relief valve spring length	38.9 mm
Maximum oil pressure at 6500 rev/min	7.0 bar (below 40° C)
Oil pressure warning light switch opens	0.3 - 0.5 bar
Oil filter	Full flow disposable screw-on canister

FUEL SYSTEM

System	Returnless Multipoint Fuel Injection, electronically controlled with electro-mechanical fuel injectors.
Electronic fuel injection data	See Engine tuning data.
Fuel pump
Type	Continuous flow, electrically driven roller vane pump submerged in fuel tank.
Pump maximum pressure at 13.5 V	3.5 bar
Regulated injection pressure	3.0 ± 0.2 bar
Fuel pump delivery	39 litres @ 3.0 bar
Fuel filter	In-tank lifetime fit; mesh area 584 cm² , mesh size 8 to 10 microns
Air cleaner	Paper element type
Fuel grade	95 RON minimum - UNLEADED fuel to EN228 specification

CAUTION: Serious damage to the engine may occur if a lower octane number fuel than recommended is used. Serious damage to the catalyst will occur if LEADED fuel is used.

COOLING SYSTEM

Pressure cap opens	1.03 bar
Thermostat
starts to open	86 to 90° C
fully open	102° C
Cooling fan switch, operating temperature	ON - 102° C, OFF - 96
Second cooling fan switch, operating temperature	ON - 117° C, OFF - 112
Engine bay fan switch, operating temperature	ON - 75° C, OFF - 65
Engine bay ambient air, warning light switch:
MPi	ON - 130° C, OFF - 110
VVC	ON - 85° C, OFF - 75

° C ° C ° C

° C ° C

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Parts & tools for this job For 2002 MG TF

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