How can I fix this oil leak

[G_loomis]

This may sound a bit finicky, but if there is one thing in life the drives me crazy its a oil leak. No matter how big (or in my case) how small it is, it just gives me the dirks!

I got a HJ60 with a 2H diesel. At the back (drivers side) where the old 12V oil pressure sensor was I have put a copper tube system in. But I just can't get a good enough seal to prevent oil from leaking from this point. Because of the location I can not get a good look at whether the oil is leaking through the thread or coming out between the copper tube and the locking nut thingy.

Any tips or ideas that would help me rid my truck of this annoying leak would be greatly appreciated!

Thanks.

[sambo]

Did you put plumbers tape on the thread before you did it up. If so i bought some stuff called "stud and gasket sealer" and it is genuine Holden, and i used it to seal a stud into the head on my 2h, (i.e. water was leaking through the stud and into the exhaust.) the stuff is almost like contact adhesive and is a long term fix, much better than normal gasket sealant.

[Guzzi]

G_loomis,

Oil leaks, a little oil can truely go a long way.

Mate you can do 2 things.
1. Ignore it and learn to live with it........

2. Pull out the offending fitting and see where its leaking, ie either from the tube or from the threaded bit that goes into the block.
You dont mention whether the copper tube has "fittings" to attach it or youve soldered it.
If this thing is several screw in fittings take it all apart and clean everything, degrease and then give a spray with brakeclean or contact cleaner.
Loctite have a few very good products for stuff like this, loctite 567, is a white liquid thread sealeant, loctite 515 is a liquid gasket, loctite 569 is hydraulic sealant for this type of problem, either one will work in this application. As they arent thread locking agents per say removal at a later time will not be a problem.
Reassemble the fittings with one of the above loctites, refit to the block with a few drops on the threads and tighten, let it sit for an hour to set, start engine and see if it leaks.

Other silicne type sealants can be used but Ive always had good results with loctite (no Im not a rep).
Hope this helps

[droopypete]

Do you have a small video camera?
they are very good for looking around corners and into tight crevices
Peter.

[G_loomis]

thanks for the tips on the sealants. Will do the inny minny monny moe thing and give one a go!

The idea with the vid cam was something i never would of thought of either! good stuff.

[Shadow]

try thread tape if you havent aloready

be careful though as the oil cooler housing your threading into is just cast alloy and you can quite easily strip it.