Introduction
Vehicle engine 1.6 HDi FAP 16V 110 hp
Leaking injector seals are a common problem on PSA's 1.6 HDI engine.
The symptoms are:
- a smell of exhaust gas in the passenger compartment.
- a characteristic sound of compressed air escaping from the combustion chamber.
- exhaust fumes in the engine compartment.
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Open the hood and remove the engine cover
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The 4 injectors are located in the center
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Inspect the injectors with a lamp to find the leak at the engine block. Even if the leak is on only one injector, it is necessary to replace the 4 seals.
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The leak is coming from the seal of this injector. There are traces of oil and carbon.
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Disconnect the vehicle battery
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Disconnect the electrical harness from the 4 injectors
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Disconnect the air mass meter connector
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Disconnect the last connector from the harness
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Use an 8mm hex key to remove the 3 fixing points of the electrical harness support
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Remove the electrical harness
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Using needle-nose pliers, carefully remove the 4 injector clips without deforming them
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Move the diesel hose harness aside without disconnecting it from the rest of the fuel supply circuit.
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Start by removing the nuts from the high pressure lines, injector side
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Use a 14 key
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Push the nuts back up along the pipe. Do not twist the pipe which is still attached on the other side to the common injection rail.
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The injector is held by a flange fixed at 2 points on the cylinder head
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Use a size 8 hex key on the nuts of the column screws
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The injector can now freely exit its injection well
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But the seal leak can create a residue of burnt gas. Using a pair of pliers, carefully remove the injector by making small rotating movements.
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The faulty copper seal is located at the bottom of the injector well
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Use a swab to remove the seal
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Compare copper gaskets. The dimensions of the new gasket have been modified by Peugeot to ensure better sealing.
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Remove the gasket placed on the engine block at the inlet of the injector well
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Clean the seal area and surroundings
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Vacuum and clean the inside of the well
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Place the injector on a clean work surface. Do not touch the tip when cleaning. Identify the injector according to its cylinder so as not to mix them up when reassembling.
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Remove the engine injector protector
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Clean the injector body with a degreaser and a clean cloth
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Compare injector seals and protector
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Position the new elements on the cleaned injector
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Place the engine block gasket in the groove
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Check that the lip of the seal is correctly inserted into the groove and push lightly with a flat screwdriver
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Replace the injector
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Tighten the clamp
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Tighten the high pressure line nut
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Reassemble the injectors
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Reassemble the diesel harness and the injector wiring harness
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Reconnect the battery
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Start the engine and check the injectors for leaks.
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13 Comments
I have a little problem I can't remove the copper seal which is stuck in the bottom of the seized well, any tips? thanks
philippe oillic - Resolved on Release Reply
Hello, I have 2 seized injectors out of 4, even with the multi-grip pliers I can't get them out. If you have any advice to give me because I'm really lost, thank you very much, cordially
david burbaud - Resolved on Release Reply
Same difficulty to enter the black seals: tip: use a 15 or 16 socket or a tube of suitable diameter. Pass the ring around the socket and approach the injector well. Slide with a screwdriver without forcing. Once the ring is well at the bottom, remove the socket.
Jean-Olivier SAURIAU - Resolved on Release Reply
I did the job as in the photo, however it is difficult to put the lips of the black seal in the well. A word of advice: put it directly on the injectors below the white ring and gently insert it, tighten right to left until the injectors go down well into the well. I have changed two for the moment, then I will do the other two as there is no leak for the moment.
BETTY LALANNE - Resolved on Release Reply
I also have injectors 1 and 2 to change the seals. I have already bought the seals I have to change it thank you very much for this tutorial it is not complicated to do it is however just necessary that the injectors are not hard to remove otherwise it is a pain
BETTY LALANNE - Resolved on Release Reply
I recommend doing this operation with the engine warm. But it is not always easy.
Hello, I would like to know what the torque wrench is for in the tutorial? Because there is no tightening torque in the tutorial?
because I have everything I need to perform this operation except this tool.
can you enlighten me please
thomas renould - Resolved on Release Reply
The key is used to tighten the injectors correctly. Here, 4N.m + 75°. Don't forget to check the tightness of the flanges on which the injectors are tightened because they can loosen. I don't have the torque in mind but it must be around 10N.m.
