We remove the ramp to check and replace the injectors, as well as to dismantle the intake pipe.
Release the fuel pressure (described in the article - Replacing the optional Renault Duster fuel filter)
Disconnect the negative battery terminal.
Remove the protection of the fuel rail, for this:
On the F4R engine, through the channels with a head of 13, unscrew the two nuts of the studs securing the ramp protection
We take it out of the engine compartment
After this:
F4R engine
Push on the latch of the tip of the fuel supply pipe to the rail
Remove the tip of the tube from the fuel rail fitting
Press the lock of the wire block, disconnect the block from the nozzle connector.
We also disconnect all pads from the remaining injectors
With a head of 8, unscrew the two bolts securing the fuel rail to the intake pipe
Pull out the ramp, remove all four nozzles from the holes in the intake pipe
The photo shows the holes for the nozzles in the inlet pipeline
Pry off with a screwdriver
Remove the nozzle locking bracket
Remove the nozzle from the ramp socket
Prying with a thin screwdriver, remove the nozzle sealing rings
The gray injector rings seal in the fuel rail, and the brown rings in the intake manifold.
On K4M engine
We remove the fuel rail in the same way as on the 2.0 liter engine.
Remove the fuel rail with injectors
Pry off the fixator with a screwdriver p
Remove the nozzle locking bracket
Remove the nozzle from the fuel rail socket
Prying off with a thin flat screwdriver, remove the nozzle sealing rings.
The nozzle is sealed with two rubber rings.
Blue in the fuel rail, black in the intake pipe.
We assemble and install the fuel rail with injectors in the reverse order.
Before installing the injectors, apply a thin layer of engine oil to their o-rings.
After installing the locking bracket, we check for each nozzle the reliability of its fixation in the ramp socket.
