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Checking and adjusting values: TU5 engine type (TU5JP4) Citroen C4 I

Power unit ~261 words

Foreword

Units of pressure

1/ units of pressure in bars

NoteOne bar has the advantage of being close to the average atmospheric pressure at sea level

2/ Unit of pressure in millimetres of mercury (symbol: mmHg) or Torr (symbol: Torr)

This unit of measurement of pressure was origially defined as the pressure exerted at 0°C by a 1 millimetre column of mercury, later indexed to the atmospheric pressure

The pressure values indicated in the tables below are the values read on the pressure gauge (relative pressure)

NoteRelative pressure is equal to absolute pressure minus atmospheric pressure

Units of tension

The SEEM unit measures by deflection of the static tension of the belt, by deforming a portion of its length

General engine information

engine typeTU5JPTU5JP4BTU5JP +TU5JP4S-RTU5JP4TU5JP4S
engine legislative typeNFZNFRNFVN6ANFUNFS
cubic capacity1587 cc
fuelunleaded petrol RON95
maximum power65 kW66 kW70 kW78 kW80 kW90 kW
engine speed at maximum power5600 rpm5800 rpm5700 rpm5600 rpm5800 rpm6500 rpm
maximum torque13,5 daNm13,2 daNm13,5 daNm14,2 daNm14,7 daNm14,3 daNm
engine speed at maximum torque3000 rpm2500 rpm3000 rpm4000 rpm4000 rpm3750 rpm

Valve clearances

inlet valvesautomatic adjustment
exhaust valvesautomatic adjustment

Sparking plugs

designationelectrode gap
electrodes (all brands)0,9 ± 0,05 mm

Oil capacity

after oil change, without replacement of filter3 litres
after oil change, with replacement of filter3,25 litres
difference between minimum and maximum on the gauge1,5 litre

Oil change interval: refer to the maintenance schedule

WarningAlways check the oil level using the dipstick

Oil pressure

NoteCheck the oil level with the engine cold

WarningOil pressure is checked with the engine hot after checking the oil level (at 80°C)

engine speedminimum oil pressure
1000 rpm2 to 0,3 bars
2000 rpm3 to 0,3 bars
4000 rpm4 to 0,3 bars

WarningCarry out work on the engine if the oil pressure values are below those in the table

Ancillary drive belt

equipmentbeltbelt tension
with and without air conditioningnew belt120 ± 3 SEEM units
equipmentbeltbelt tension
without air conditioningnew belt55 ± 3 SEEM units
equipmentbeltbelt tension
with air conditioningnew belt120 ± 3 SEEM units
equipmentbeltbelt tension
without air conditioningnew belt120 ± 3 SEEM units
equipmentbelt tension
with air conditioningby dynamic roller tensioner
equipmentbelt tension
with air conditioningby dynamic roller tensioner
equipmentbeltbelt tension
without air conditioningnew belt75 ± 5 SEEM units
equipmentbelt tension
with air conditioningby dynamic roller tensioner
equipmentbeltbelt tension
without air conditioningnew belt87 SEEM units
re-used belt61 SEEM units
with air conditioningnew belt120 SEEM units
re-used belt58 SEEM units
assembly without air conditioning and without power steeringbeltbelt tension
first assembly
new belt87 SEEM units
re-used belt61 SEEM units
second assembly with steering rack roller tensioner
new belt120 SEEM units
re-used belt83 to 90 SEEM units
assembly without air conditioning, with power steeringbeltbelt tension
first assembly
new belt100 SEEM units
re-used belt75 SEEM units
second assembly
new belt138 SEEM units
re-used belt103 SEEM units
assembly with air conditioning but without power steeringbeltbelt tension
first assembly
new belt120 SEEM units
second assembly
new belt100 SEEM units
re-used belt75 SEEM units
with air conditioning and with power steeringbeltbelt tension
first assembly (with mechanical roller tensioner)
new belt100 SEEM units
re-used belt75 SEEM units
first assembly (with dynamic roller tensioner)
-dynamic roller tensioner
second assembly
-dynamic roller tensioner
third assembly
-dynamic roller tensioner

Timing belt

belt tensionby dynamic roller tensioner

Cylinder head bolts

WarningReplace the cylinder head bolts systematically

Pressure, engine end of compression

Measure the pressure at the end of compression, in order, on cylinders 1, 2, 3 and 4

NoteThe difference in pressure between 2 cylinders must not exceed 5 bars

WarningAlways search for the origins of fault(s), where the values measured are found to be significantly out

Fuel pressure

designationpressure
fuel circuit pressure3,5 bars