Injector torque

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Zsolo1
Posts: 4
Joined: 22 Mar 2026, 19:35

Injector torque

Unread post by Zsolo1 »

Hello!
I need help!
How to tighten the injector clamping screw of a 2015 Citroen c4 picasso 2.0 HDI, or how many Nm should I tighten it with?
Screw size M8
Delphi injector
Engine DW10FD

VF7**************[VIN obfuscated, can be read by forum staff]

Thx Zsolo
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mickthemaverick
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Re: Injector torque

Unread post by mickthemaverick »

I used to be indecisive, now I'm not so sure!
I used to ride on two wheels, but now I need all four!
Zsolo1
Posts: 4
Joined: 22 Mar 2026, 19:35

Re: Injector torque

Unread post by Zsolo1 »

Thank you!
Do you think the injectors on the two different engines should be tightened the same way, even though one is Bosch and the other Delphi?
DW10FD vs DV10TD?
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mickthemaverick
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Re: Injector torque

Unread post by mickthemaverick »

As I understand it the difference between those engines is in the emissions control so I would expect them to be the same torque settings for the injector clamps. :)
I used to be indecisive, now I'm not so sure!
I used to ride on two wheels, but now I need all four!
Zsolo1
Posts: 4
Joined: 22 Mar 2026, 19:35

Re: Injector torque

Unread post by Zsolo1 »

I read somewhere that the Delphi injector must be pre-tensioned with a minimum torque ("X" Nm), and then secured to the appropriate degree with a protractor. The difference, according to my information, is that the Bosch works with lower pressure. That's why there is a different procedure.
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mickthemaverick
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Re: Injector torque

Unread post by mickthemaverick »

Fair enough you already know more about them than me! :-D
I used to be indecisive, now I'm not so sure!
I used to ride on two wheels, but now I need all four!
Zsolo1
Posts: 4
Joined: 22 Mar 2026, 19:35

Re: Injector torque

Unread post by Zsolo1 »

DW10FD (2.0 BlueHDi – modern Delphi)
Clamping bolt torque: ≈ 7–9 Nm + 65–75° tightening
(typical: 8 Nm + 70°)
DW10TD (older 2.0 HDi)
Clamping bolt torque: ≈ 7 Nm + 60–65° tightening

Unfortunately, what I know is not official...