oil pressure gage low but mechanical test gage reads OK (1 Viewer)

[rfwj]

I have an 85 fj 60 with a 2f engine from a 75 fj 40. Runs well, but recently changed valve cover gasket, oil pan gasket, and side crank case gasket. Now the oil pressure gage reads low. I put a oil pressure tester on it. ran at 10lbs at idle and went up 10 lbs every 1000 rpm. so i think i am ok on real readings with a good gage. I replaced the sending unit and it is still reading low.

Should i ground the unit on the other clip? how can i test the dash gage?

thanks

Rich

 

[rfwj]

 

[3_puppies]

if you ground the wire to the base of the oil sender, you WILL destroy the gauge.
do not do that.

 

[rfwj]

thanks. any thought on why my gage is reading low versus the video? new sending unit?

 

[rfwj]

thanks. any thought on why my gage is reading low versus the video? new sending unit?