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View Full Version : OIL PRESSURE SENDING UNIT IN 425 CU. IN. '78 SEDAN DeVILLE


mrhighperformance
05-17-2005, 11:56 AM
I am having the worst time trying to seal up a pressure switch. I have tapped the threads in the block, cut the threads on the new switch, used teflon tape and paste. Even put an o-ring on it and it still will not stop leaking! The oil appears to be leaking out of the block threads as the top of the switch is dry. Anyone out there ever had such an asinine problem such as this??!! I have never been so aggravated about something as simple as seling threads! Please give me some good advice! Thank you!

Caddycarlo
05-18-2005, 07:37 AM
are you sure the oil is from the sending unit and not the back of the intake ?