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Oil Pressure at idle
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cpvarner
New User
| Posts: 42
| Joined: 09/09
Posted: 10/22/09
05:58 AM
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Does anyone know why I would have oil pressure (20psi) at idle warm-up (1500rpm)& zero pressure once engine is at normal operating temp?
Thanks, any ideas would be appreciated
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Dirty Deeds DunderJeep 77 CJ5 304
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Posted: 10/24/09
06:12 PM
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My proublem with normal pressure (cold)loss of pressure after warm-up was from worn cam bearing's,I did everything else encluding oil pump!
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Rawkon
Moderator
| Posts: 54
| Joined: 12/07
Posted: 10/24/09
10:15 PM
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yup worn bearing or bad sensor.
you can go to a 20w50 too see if it helps up the presure. its not a cure but may prolong a rebuild. typically you want 10LBS of PSI for every 1k RPMs
02 Tj with a few mods
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cpvarner
New User
| Posts: 42
| Joined: 09/09
Posted: 10/25/09
06:11 AM
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thx
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Dirty Deeds DunderJeep 77 CJ5 304
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cpvarner
New User
| Posts: 42
| Joined: 09/09
Posted: 10/25/09
06:13 AM
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thx, I'll try 20-50 a new filter and a sensor if needed
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Dirty Deeds DunderJeep 77 CJ5 304
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cpvarner
New User
| Posts: 42
| Joined: 09/09
Posted: 10/29/09
12:06 AM
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Changed out the filter, added some 20-50 along with some stabilizer, checked the pump and bypass. It still reads around 40 while warming-up @1500 rpm, however, once warm I was able to maintain 10 to 12 psi at 1500 rpm, so there was some improvement. I just recently installed a DUI HEI and think I might retard the advance just a touch, from 12 btdc down to maybe 10 & see if that helps the situation. Ya know it seems that a number of different little problems have come up since I installed the new distributor. Plugs, Oil Pressure, Runs a little Hotter, and the voltage gauge jumps around every once in awhile. Thanks, the DunderJeep project continues.
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Dirty Deeds DunderJeep 77 CJ5 304
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cpvarner
New User
| Posts: 42
| Joined: 09/09
Posted: 11/09/09
10:44 AM
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I think I was able to fix the oil pressure problem. I retarded the HEI from 12 to about 9 deg btdc and cleaned out he cooling system. The engine at normal operating temp now runs between 180 & 200. These two changes seemed to have stabilized the oil pressure to 10 psi per 1000 rpm.
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Dirty Deeds DunderJeep 77 CJ5 304
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