oil pressure sending unit leak?

[demonpixel]

I finally got my LS1 in my 72 Firebird; everything is a-ok, EXCEPT for this weird oil leak I have coming out of the sending unit at the back of the engine.

This is an analog gauge and I think it's a nylon tube. I tightened the thing down a little tighter than hand tight and put teflon on the threads so I have no idea why it's leaking. Anyone have any ideas?

Someone mentioned to use a copper line to replace the nylon line and that you could get this at the parts store - does anyone know if this is a kit or what this copper line is called?

Here's the leaking part I'm talking about:



And this is just to give you a reference of where it is on the engine:



I am aware of the PCV hose disconnected. I did that because the hose was in the way when I took the photos.



Thanks for any help/advice, I'm so close!!!

[CamaroAJ]

you have the tube stuck through the nut then the crush sleeve about a half inch? they do need to be pretty tight even thought its only plastic tube.

[demonpixel]

you have the tube stuck through the nut then the crush sleeve about a half inch? they do need to be pretty tight even thought its only plastic tube.

So do you think I should just crank it down more at the tube nut? Or at both locations (the tube nut and the at the engine)?

[demonpixel]

Got it all fixed. The nuts were loose and weren't making a seal AT ALL. I cranked them down, went for a drive, checked it, and dry as a bone! Thanks for the help.

[ErikLS2]

Might want to consider the switch to a copper line still. That nylon stuff long term makes me nervous and boy does it make a mess if it breaks. Glad it was an easy fix for you.

[demonpixel]

Might want to consider the switch to a copper line still. That nylon stuff long term makes me nervous and boy does it make a mess if it breaks. Glad it was an easy fix for you.

Good point. I will probably do that in the near future. Any idea what that copper line is called at the parts store?