Leaky oil pressure sender ( not the sender unit )

[steven polaski]

Under my oil pressure sender is a "T" block that my sender threads into as well as a oil line disappearing behind the a/c unit. This block leaks oil I did tighten it up but I wonder if there is a "O" ring in there because it still leaks . It leaks from the right side were the threads are.

Thanks
Steven

[Early_S_Man]

Steven,

No, there is a metal ferrule under the compression nut. The ferrule cuts a groove into the tubing on the end of that oil line when the nut is tightened. For the seal to hold, everything must be blemish-free, and the nut must stay tight ... not always possible once that joint has started leaking.

Some people reuse nuts and ferrules when replacing the line to the cam tower ... NOT a great idea!