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Unread 05-20-2003, 04:00 AM   #1
Registered User
1978 CJ7 
Join Date: Feb 2003
Posts: 61
oil pressure gauge

I had my dash apart on the 72 CJ. It has an aftermarket oil pressure gauge that is mechanical ie. it has a tube that carries oil from the engine to the gauge itself. I noticed that while the engine is running there is about 3 to 4 inches of air in the line that carries the oil to the gauge. Does the gauge meassure the pressure of the air in the tube or does it need the oil to be inside the gauge? If the air in the line is not supposed to be there how do I bleed the line?


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Unread 05-20-2003, 09:27 AM   #2
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1978 CJ7 
Join Date: Jan 2003
Location: Lancaster, Pa.
Posts: 1,759
most of the time it has some air in it to bled it out you have to crack it enough with the motor running and can be some what of a mess
1978 cj-7 had since 1979
401 .030 over- full floating flat top pistons
crower solid cam 292 dur .500/.510 lift
turbo 400 tranny 2500 stall
model 20 transfer case
aj delux glass body
4" lift
dana 30 frount
dana 44 rear
4.56 gears
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