Lotus Elise S1 Service Notes page 266

Lotus Service Notes
Section EMN
Fuel Rail and Pressure Regulator Valve - Replacement
Do not attempt to remove the pressure regulator valve from the fuel rail; The valve is supplied only as an
assembly with the rail. The fuel rail is removed from the engine complete with the four fuel injectors.
1. De-pressurise the fuel system, and disconnect the battery.
2. Remove the breather hose between intake plenum and cam cover, and the breather hose between the
throttle body and cam cover.
3. Disconnect the vacuum hose between regulator valve and plenum.
4. Release the fuel return hose from the right hand end of the fuel rail and plug the connections.
5. Remove the two screws securing the fuel inlet pipe to the left hand end of the rail and withdraw. Discard
the 'O' ring, and plug the connections.
6. Unplug the injector harness connector, and release from its retaining bracket.
7. Remove the two bolts securing the fuel rail to the inlet manifold, and carefully withdraw the rail complete
with the four injectors and pressure regulator valve. Take great care not to damage the injector tips
during the removal process. Cap the injectors and plug the manifold ports to prevent dirt ingress.
Pressure sensing
hose
Fuel pressure
regulator valve
Fuel return
pipe
Fuel injector
Inlet manifold
lemiM
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