Technical 1940 Lincoln Zephyr

New ID lost my old one, **** happens. Anyhow have a question on a 292 Cubic Inch L-Head V12. Does anyone know how to test the oil presure sending unit? Going to hook up an external presure guage but still would like to know how to test the sending uint also. Thanks for any help...Jack

 

Look in a motors manual, they explain how to do it.

 

Thanks, I w.ould but my old motors manuals only go back to the early '70's. This one was born 14 years before me lol