How to Solve Oil Leakage at the Ferrule Fitting of the Oil Pipe?
2 Answers
Ferrule-type pipe fittings require the use of high-precision cold-drawn pipes. When the mating part between the cold-drawn pipe and the ferrule is not tight, or there are axial grooves due to scratches, leakage may occur. Solution: Ensure that the conical surfaces fit tightly during installation, and replace the ferrule if necessary. The lock nut is either too loose or too tight. Solution: Tighten the nut according to the specified torque. The hardness of the ferrule cutting edge is insufficient, or the steel pipe is too hard. Solution: Replace the ferrule with a qualified one. The end face of the steel pipe is not perpendicular or not clean, hindering the correct installation of the pipe. Solution: Carefully clean the end face before installation.
As a seasoned DIY car enthusiast, I've encountered oil leaks from tubing ferrule joints multiple times. First, don't panic - assess the severity. For minor seepage just noticed, try using two wrenches: one to hold the joint body steady while the other tightens the nut about a quarter turn - sometimes it's just insufficient initial tightening. If it still leaks after tightening, replacement is necessary. When removing, be prepared for residual oil flow with a catch pan. For new ferrule installation, ensure tube ends are cleanly cut, position the ferrule correctly, and tighten gradually. Always check nut threads for damage and replace both if compromised.
