Remote oil filter line leak

[cosmo]

I have remote oil filter lines which originate from the block. I am experiencing an annoying leak from one of the lines that connects to the block. The leak is coming from the metal nut to elbow. Assuming the elbow is flared inside the nut?

How does oil sneak past? Is there an internal O ring in/on the flare that has gone bad? The nut won’t seem to tighten as it looks like a point is butt up against the bottom hose, nut.

Hope my crude pics describe it better.

 

[dhays]

No help from me I am a terrible mechanic. I just wish you luck.

 

[av8r]

If the larger nut can’t be tightened correctly the fitting will leak. The larger leaking line may be an up-sized replacement hose using an extended flare nipple to accommodate the larger flare nut. One option would be to replace the long flare nipple with a longer one so the flare nuts don’t interfere. If it is a JIC 37 fitting there are 3 lengths readily available, check discounthydraulichose.com. If it is an AN or Japanese fitting you might have to get creative with fittings and nipples.
Another option would be to replace the hose and fittings with the smaller size, a hydraulic shop could build you a new one and provide the correct fittings.