HDi - injector bolts - correct procedure

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Andle
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HDi - injector bolts - correct procedure

Post by Andle »

As well all know,

There is an issue with the injector bolts on the 1.6 Hdi engines.

The get loose over time. This causes huffing/ticking etc.

What is the correct way to get this issue sorted? When the bolts are torqued - should it be done when the engine is hot or cold?

Can someone point me to or share with me - a guide that has been put together after much experience with this issue please.

I clearly have some oil/gunk deposits around injector 3.

Thanks,

Andle.

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GiveMeABreak
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Re: HDi - injector bolts - correct procedure

Post by GiveMeABreak »

Officially, these are tightened using an injector tightening adaptor and Torque wrench with associated fitting:
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[8] Diesel injector tightening adaptor (-).1608.C[7] Torque wrench (-).1608.A - (1 to 5 daNm)

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Tighten the nuts (11) to 0,4 ± 0,04 daN.m
using tools [7 - 9].
Observe the following angular tightening method:
Position the zero (marking " e") facing the operator
Place the mobile index "d" opposite the gradation 65°
Tighten progressively and in one single action
bringing the mobile index "d" opposite the zero (marking "e") of the tool [8]
Angular tighten to 65° ± 5° the nuts (11).

discv
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Re: HDi - injector bolts - correct procedure

Post by discv »

This is exactly the point where it all starts to go wrong- time and again.
In my opinion based on painful experience, all the injectors need to come out. Keep them in the correct order. The injector seats in the head need a kiss and polish.
New copper seals all round and new injector tube seals. [Your no.3 seal will likely have burnt away already- hence the deposit]
Reassemble with a smear of very high temperature grease. I torque down with a inch/pound wrench- the threads of the stud and the nuts must be clean and lubricated to ensure your torque settings are true. For the angular tightening I used a printed and cut out protractor.
And now to the next hurdle. Again in my opinion- the sump needs to come off to inspect the the oil pick up gauze filter. And so on.....

Andle
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Re: HDi - injector bolts - correct procedure

Post by Andle »

Picasso xsara 1.6 hdi 2007.

90k miles.

Injector leak.

Tyres need doing, timing belt, and a pulley bearing in engine bay is squeaking.

Need need new tyres + tracking.

Is it worth fixing this car - or would i be better off buying a new car?

If I could keep the costs (exuding the tyres & tracking) below £500 - I would keep it. I just don't know how to make that happen.

Andle
Donor 2020
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Joined: 19 Sep 2017, 15:35
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Re: HDi - injector bolts - correct procedure

Post by Andle »

Discv - do you do private work?

Where are you based?

discv
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Re: HDi - injector bolts - correct procedure

Post by discv »

Andle wrote:
08 Jul 2020, 15:41
Discv - do you do private work?

Where are you based?
I've got to chuckle- I'm an old gezzer confined to a wheel chair. And it took me about a year, crawling round on hands and knees to sort my 1.6 Hdi :rofl2:
On a serious note, doing a proper fix is a job that would cost a small fortune, so forget it unless your going to do the job yourself.
Selling it with declared faults would bring few buyers, I suspect. But if the body shell is rust free there my be more interest.
So you may be left with just one option- tighten all the injectors down to the 1 click of the wrist setting- and see what happens.