Delasangre
Well-known member
I watched a video and there was only an oring midway up the injector and a copper washer at the tip. Is the upper O-ring in the hard lines where it connects to the injector and rail? So I would need 8 of them?
Upper Injector O-ring?
- Thread starter Delasangre
- Start date
SmokeyEddyTDI
Well-known member
You would need 1 per injector. The rubber o-ring just mates the injector to the inner race of the cylinder head it's sitting inside. There are teeny tiny ones on the fuel return lines though that are kind of fun to change.
They're the same as the mercedes injectors of the same style if you can find those but not VAG ones.
The hardline sees so much pressure that there is no "gasket" mating the nut to the injector, just metal on metal contact. That's why the torque spec on the fuel line nuts is pretty high; 21 ft/lbs. Which is hard to appy without really expensive tools.
I use a string and hang a known weight at a specific distance down the arm of the wrench to apply the right spec in a very rudimentary way but it works consistently. I loosen and re-hang 3 times to ensure the right spec. However, doing this on the fuel lines is pretty tough given their position.
Anyone have advice for applying correct torque without an open ended torque wrench to the fuel lines?
Oh right! Crow feet sockets!
" You can use your box end wrench as a torque wrench by applying the specified torque number in pounds 12" from the center of the box end. One pound applied 12" from the center of the nut = 1 ft. lb. Use a spring scale to measure this. "
That's a great idea. A luggage scale would be perfect.
They're the same as the mercedes injectors of the same style if you can find those but not VAG ones.
The hardline sees so much pressure that there is no "gasket" mating the nut to the injector, just metal on metal contact. That's why the torque spec on the fuel line nuts is pretty high; 21 ft/lbs. Which is hard to appy without really expensive tools.
I use a string and hang a known weight at a specific distance down the arm of the wrench to apply the right spec in a very rudimentary way but it works consistently. I loosen and re-hang 3 times to ensure the right spec. However, doing this on the fuel lines is pretty tough given their position.
Anyone have advice for applying correct torque without an open ended torque wrench to the fuel lines?
Oh right! Crow feet sockets!
" You can use your box end wrench as a torque wrench by applying the specified torque number in pounds 12" from the center of the box end. One pound applied 12" from the center of the nut = 1 ft. lb. Use a spring scale to measure this. "
That's a great idea. A luggage scale would be perfect.
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