Contents: Main characteristics 🠛 Idle speed 🠛 Fast idle speed 🠛 Deceleration speed 🠛 Smokiness 🠛 Bosch fuel pump 🠛 Lucas fuel pump 🠛 Static injection moment 🠛 Nozzles 🠛 Turbocharger 🠛 Tightening torques, Nm 🠛
Main characteristics
Characteristic | Meaning |
| Cylinder firing order | 1-3-4-2 (No. 1 from flywheel) |
| Maximum engine speed: | |
| f8Q 620 engine without turbocharger | 5200±100 rpm |
| f8Q engine with turbocharger | 5000±100 rpm |
| f9Q engine with turbocharger | 4800±100 rpm* |
| *On F9Q engines, maximum engine speed is controlled by the electronic injection module and is not adjustable | |
Idle speed
Characteristic | Meaning |
| F8Q Engines F9Q Engines | 825±25 rpm 850±25 rpm* |
| *On F9Q engines, idle speed is controlled by the electronic injection module and is not adjustable | |
Fast idle speed
Characteristic | Meaning |
| F8Q 620 engine without turbocharger | 925±25 rpm |
| F8Q Turbocharged Engine and F9Q | Not regulated (factory installation)* |
| *On F8Q turbocharged and F9Q engines, fast idle speed is controlled by the EFI module and is not adjustable | |
Deceleration speed
Characteristic | Meaning |
| F8Q 620 engine without turbocharger (with 4mm gasket) | 1150±25 rpm |
| F8Q engines with turbocharger (with 4mm gasket) | 1250±25 rpm |
On F9Q engines, the deceleration speed is controlled by the electronic injection module and is not adjustable | |
Smokiness
Characteristic | Meaning | Maximum |
| Engine F8Q 620 | 1.24 m—1 (40%) | 2 m—1 (55%) |
| F8Q engine with turbocharger | 1.4 m—1 (44%) or 1.8/m (52%) | 3 m—1 (71%) |
| Engine F9Q | 1.24 m—1 (40%) | 2.5 m—1 (64%) |
The values given are for reference only - for exact information see the label attached to the engine compartment. | ||
Bosch fuel pump
Characteristic | Meaning |
| Engine F8Q 620 VE 4/8F 2300R 598, VE 4/8F 2300R 598—1*, VE 4/8F 2300R 598—2**, VE 4/8F 2300R 598—3***, VE 4/8F 2300R 598—4 | |
| *With air conditioning and vacuum operated fast idle | |
| *With air conditioning and vacuum operated fast idle | |
| ***With air conditioning, vacuum operated fast idle and coded fuel shut off valve | |
| F9Q 730 Engines F9Q Engines | VE 4/11 E2000R 672 734 VE 4/11 E2000R V1763 |
| Direction of rotation | Clockwise when viewed from the pulley side |
| Static injection moment: | |
| engine position | Cylinder #1 at TDC (refer to Section Removal and installation of distributed injection system components) |
| pump position: | |
| models with F8Q 620 engine | 0.82±0.04 mm |
| models with F9Q engine | 0.45±0.02 mm |
| Dynamic injection timing | No information |
Lucas fuel pump
Characteristic | Meaning |
| F8Q 784 and 786 DPCN engines | R8448B020A or R8448B021A* |
| Engines F8Q 788 DPCN | R8448B130A** |
| *With coded fuel shut-off valve | |
| **No information available for this engine type. Please consult your Renault representative. | |
| Direction of rotation | Clockwise when viewed from the pulley side |
Static injection moment
Characteristic | Meaning |
| Engine position | Cylinder #1 at TDC (refer to Section Removal and installation of distributed injection system components) |
| Pump position | The value is indicated on the pump (refer to Section Removal and installation of distributed injection system components) |
| Dynamic injection timing | No information |
Nozzles
Characteristic | Meaning |
| Type | Needle-shaped |
| Injection pressure: | |
| F8Q Engines | 130 + 8 bar - 5 bar (maximum permissible deviations 8 bar) |
| F9Q Engines | 200 bar + 12 bar - 0 bar (1st level)* |
| *Not adjustable on F9Q engines (factory installation) | |
Turbocharger
Characteristic | Meaning |
| Type | Garett T2 |
| Boost pressure (maximum load | 2500 - 3000 rpm 900 mBar + 50 - 100 mBar |
Tightening torques, Nm
Characteristic | Meaning |
| Coded Fuel Shutoff Valve - Lucas Pump | 20 |
| Cold Start Valve Bolt (models with F9Q engine) | 10 |
| Nuts connecting the cooling pipe to the turbocharger | 20 — 30 |
| Turbocharger mounting nuts to the front of the exhaust system: | |
| Models with F8Q engine Models with F9Q engine | 45 26 |
| Fast idle thermal actuator to cylinder head | 35 |
| Fuel level sensor blocking ring | 35 |
| Fuel injectors to the cylinder head (models with F8Q engine) | 70 |
| Fuel injector to cylinder head clamp bolts (models with F9Q engine) | 27 |
| Fuel line connecting nuts and bolts | 25 |
| Fuel Supply and Return Hose Banjo Bolt - Bosch Pump | 25 |
| Fuel Pump Cover Bolts (f9Q engines) | 7 |
| Fuel pump hydraulic head bolt (f9Q engines) | 12 |
| Left fuel pump support nuts and bolts: | |
| Bosch pump, F8Q 620 engine | 25 |
| Lucas pump, other F8Q engines | 20 |
| Bosch pump, F9Q engines | No data |
| Fuel pump right support bolts: | |
| Solid Pulley - Bosch Pump, F8Q 620 Engines | 25 |
| Lucas pump, other F8Q engines | 30 |
| Bosch pump, F9Q engines | 22 |
| Fuel pump pulley retaining nut: | |
| Solid Pulley - Bosch Pump, F8Q 620 Engines | 65 |
| The MAA pulley is a regular nut with a separate washer | 65 |
| Pulley "MAA" - non-ferrous metal nut with washer | 45±5 |
| Fuel pump pulley center bolt (left hand thread) with micrometric adjustment: | |
| Stage 1 Stage 2 | 20 90 |
| Injection timing adjustment hole plug: | |
| Bosch pump, F8Q 620 engine | 25 |
| Lucas pump, other F8Q engines | 6 |
| Bosch pump, F9Q engines | No data |
| Intake/Exhaust Manifold Retaining Nuts: | |
| Models with F8Q engine Models with F9Q engine | 25 28 |
| Intake/Exhaust Manifold Struts - F9Q Engines | 8 |
| Nut connecting the oil supply pipe to the turbocharger: | |
| Models with F8Q engine Models with F9Q engine | 15 — 25 20 |
| Nut connecting the oil drain pipe to the turbocharger: | |
| Models with F8Q engine Models with F9Q engine | 40 9 |
| Fuel Shut-Off Valve - Bosch Pump | 20 |
| Turbocharger to exhaust manifold mounting nuts: | |
| Models with F8Q engine Models with F9Q engine | 45 26 |
| Locknut of the bypass valve drive rod | 6—8 |
| Wastegate Bracket to Turbocharger Mounting Bolts* | 15 |
| *Coat the bolt threads with a locking compound | |