oil sender leak

[42ford]

Hi
I have a leak at the oil sender. I remover it today and put pike dope (teflon) on it and tightened it up. Still leaks? I have a 42 with stock engine.
Thanks,
Dick

 

[Kube]

Are you certain it is leaking at the threads? My guess is it is leaking internally and flowing down making it appear it is leaking at the threads.

 

[rotorwrench]

Tapered pipe thread can be damaged if installed with too much torque on either the fitting or the boss. Kube also has a point about the crimped design nature of the old King Seeley sender units. They can leak at a crimped or swaged assembly point sometimes.