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Discussion Starter #1
How does the injector work on this model I can't stop mine leaking no matter what I do

Is it normal there's oil in the tube ? Between the copper gasket and the oil seal in the head

The oil seal in the head what does it actually do ?

Does the actual tube the injector go in have a seal ?

Does the spacer actually create a seal?





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The copper seal ONLY seals the injector into the cylinder

The oil seal seals the gap between the tube and the rocker cover and head its a rubbish design and this is why you are having issues the plastic part under the clamp helps to hold the oil seal down.

The oil is only leaking because the seal is not being held down properly this is why on your other thread i said you need to remove the 2nd washer as the injector NEEDS to be far enough in to hold both seals in place
 

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Personally I would reseat the injector port, new copper sealing washer and replace the 2 injector retaining studs.
Re fit
Torque up correctly.
The rubber seal is stop muck going to port, not to seal from engine.
 

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Greegor the injector top seals seal the OIL from leaking out the rocker cover

The seals for the intake are different these are the ones that stop muck going into the ports there are 8 holes on the top of the head 4 intake 4 injectors seals are different between the both of them.
 

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Discussion Starter #5
Does the bottom of the tube have a seal as well? I've tried it 6 times doing different things and it still leaks

When I take the injector out the whole of the injector is caked in oil



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Can hear a chuffing noise as the compression escapes past the copper seal?
Is diesel on the injector or engine oil?
But as said Above, only fit 1 copper washer, a new one.
Ideally replace the injector posts, a couple of pounds from main dealer as these stretch.
Ideally resurface injector port to garentee a good seal.
Torque up to correct torque.
 

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Discussion Starter #7
I have recut the hole

There's no chuffing at all and the car performs great

When I take injector out there's no leakage from the copper gasket and no carbon

I torque down to just over recommended about 10nm I believe and they are still at that torque


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Discussion Starter #8
I have ordered some studs do they normally come out easy enough ?

What sort of torque are we looking at for the injector bolts


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Discussion Starter #9
Has anyone done this ? Not a lot on google about it. Don't want to touch if the studs aren't easy to get out

How are the tubes pressed in do they have seals in the bottom


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Studs just screw in but sometimes they are tight to remove and if using the correct tool it snaps the end off above the thread ! if this happens you will need to improvise i doubt there is any issue with the studs to be honest.

Tube is just a press fit into head no seals on bottom.
 

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Yes i replaced mine on my 1.6 hdi 110 206.
Just use the correct spline socket, should be easy to remove.
Have you the torque needed to do them up?
Put a little blue thread lock on them.
Do not over tighten.
 

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Discussion Starter #12
I don't no ? Didn't even look at the studs there still in the packet was going to use 2 nuts to drive them out lol


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2 nuts will do if you dont have the tiny torx socket needed i use 2 nuts if the torx bit snaps off them then if 2 nuts dont work you just run the 2 nuts down a bit and flatten the top with a hammer the nuts then get stuck on flat bit and stud turns !
 

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Discussion Starter #14
Sounds good I do have a torx set so will try first

So torque setting of the injector what is everyone saying?


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Discussion Starter #15
I know the torque setting for the nuts to hold down the injector are 5nm does anyone go higher?

As regards the oil seal. If the tube is pressed what does the oil seal stop oil from ? Still confused


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The tube sticks out the head and the cam box/rocker cover goes over but as i have said already the top of the tube and the cam box rocker cover are NOT a tight fit the seal fills this gap its a poor design in my opinion and this is where the oil is leaking from.

I just tighten stuff to feel i dont use a torque wrench very often
 

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Discussion Starter #17
Does that include oil actually leaking down the body of the injector or do I have another issues


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Discussion Starter #19
Thanks didn't get a chance to do the seal today as it was raining

As regards the torque for the bolts there at 5nm I normally do to 15nm does that sound ok ?

does anyone know the torque for the studs themselves

Thanks


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Discussion Starter #20
Haynes says 4nm for the injector bolts plus 65 degrees seems an odd figure

Studs says 7nm


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