Pummp — Renault

Write-Up: The Renault Fuel Injection Pump (Often Referenced as the "Renault Pump")

1. Introduction

In automotive history, particularly within French and European motorsport, the term "Renault pump" colloquially refers to the high-pressure fuel injection pump used on Renault's early electronic fuel injection (EFI) systems. The most famous example is the Renault 5 Turbo and Renault 5 Alpine Turbo, but the pump also appeared on other injected Renault models like the R18 Turbo, Fuego Turbo, and even some normally aspirated injection models (R20, R30).

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General Troubleshooting Table

| Problem | Likely pump | Cheap test | |---------|-------------|-------------| | No start, fuel at injectors? | High pressure fuel pump | Check rail pressure with scanner (min 200 bar while cranking) | | Overheating, coolant loss | Water pump | Look for drip below crankshaft pulley | | Hard brakes + no boost | Vacuum pump | Use vacuum gauge at brake servo line (should be 20+ inHg) | Write-Up: The Renault Fuel Injection Pump (Often Referenced

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The one most celebrated in performance circles is the external high-pressure roller cell pump (often a Bosch 0 580 254 9xx series) mounted under the car near the fuel tank.