Original floor console oil gauge, new brass sending tube, new compression fitting, and it leaks oil? I see the housing that screws up over the compression fitting and onto the back of the gauge seems to tighten before the compression fitting is tight. Anybody else have this probelm? What did you do?

Original floor console oil gauge, new brass sending tube, new compression fitting, and it leaks oil? I see the housing that screws up over the compression fitting and onto the back of the gauge seems to tighten before the compression fitting is tight. Anybody else have this probelm? What did you do?
Some of the compression fitting nuts are deeper than others, I've shaved them down with a disc sander before and had luck with that.

There are different sized ferules and maybe yours got packaged wrong. I bought new copper tube kit at NAPA and it went together just right, no leaks. Except when I had the guages out for interior resto and forgot about it when I drove to the body shop for vinyl top. Oil pumped all over my floor that day :( yuck.

mine leaked but it wasn't all the way tight. I kept turning it until it stopped. I turned it a long time against enough resistance to think it was tight but it kept turning. Because it's brass, it's a little tricky cause you don't want to overtighten and crack something. But, when it's tight, the resistance definately gets stronger.

You need to use the original ferrule and nut for the gauge. It is a special one. Also you should use the original type plastic tube. JohnZ has discussed this before.

I use the brass tube also on the factory gauge. The ferrule you need looks like a cone shape. You should have gotten one with the brass line kit. Tighten it good, but not too much. I never has a problem. Are you sure it's the fitting? My gauge leaked right next to the fitting. It was the solder (sp) itself.

You need to use the original ferrule and nut for the gauge. It is a special one. Also you should use the original type plastic tube. John has discussed this before.

The original factory adapter fitting in the block and the female fitting in the back of the gauge use a GM-proprietary design, not the usual compression sleeve arrangement you find in aftermarket gauge kits; if you use generic male compression fittings on the line with sleeves, you can ruin the sealing surface of the GM female fittings. The correct matching GM female adapter fitting and male line fittings are shown below - Rick's supplies them with the correct nylon pressure line kit (with tiny brass inserts in both ends of the line so it doesn't collapse when the male fitting is tightened, same as the OEM line). :)

http://img.villagephotos.com/p/2002-2/13522/oil_line.jpg