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| Trouble with oil pressure gauge readings https://www.ausmini.com/forums/viewtopic.php?f=2&t=91548 |
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| Author: | rapa59 [ Fri Jan 15, 2016 12:42 pm ] |
| Post subject: | Trouble with oil pressure gauge readings |
Has anybody had trouble with oil pressure gauges and readings? I installed a digital gauge and worked fine I was getting around 35 at idle and 50 running. Over a short drive it kept dropping to where idle was at 0psi and running around 20! Thought may have been a bad sender or gauge so I had them both replaced and it just did the same thing. Any thoughts? |
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| Author: | drmini in aust [ Fri Jan 15, 2016 3:32 pm ] |
| Post subject: | Re: Trouble with oil pressure gauge readings |
Maybe someone has fitted a ball in the relief valve instead of the standard plunger. Sometimes with cold oil the spring can slip around the ball as it lifts with pressure, it then doesn't seat properly. Easy fix- fit a proper plunger instead. Otherwise, it could have a plunger, and a bit of swarf has jammed it partly open. You need to undo the big cap, take the spring out and see what's what in there. |
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| Author: | rapa59 [ Fri Jan 15, 2016 4:57 pm ] |
| Post subject: | Re: Trouble with oil pressure gauge readings |
Sorry to be a newb but where's the relief valve? |
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| Author: | gtogreen1969 [ Fri Jan 15, 2016 5:48 pm ] |
| Post subject: | Re: Trouble with oil pressure gauge readings |
Just to the left of the dissy under number 4 cylinder. |
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| Author: | rapa59 [ Fri Jan 15, 2016 5:50 pm ] |
| Post subject: | Re: Trouble with oil pressure gauge readings |
Same spot the sender gets screwed into? |
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| Author: | gtogreen1969 [ Fri Jan 15, 2016 5:55 pm ] |
| Post subject: | Re: Trouble with oil pressure gauge readings |
It is about 2 inches below the oil feed line to the filter and takes a 1" socket. |
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| Author: | gtogreen1969 [ Fri Jan 15, 2016 5:57 pm ] |
| Post subject: | Re: Trouble with oil pressure gauge readings |
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| Author: | rapa59 [ Fri Jan 15, 2016 6:50 pm ] |
| Post subject: | Re: Trouble with oil pressure gauge readings |
ahhhhhh ok found it! thanks a lot! will undo it tomorrow and check it out |
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| Author: | drmini in aust [ Sat Jan 16, 2016 6:09 pm ] |
| Post subject: | Re: Trouble with oil pressure gauge readings |
Any joy?? |
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| Author: | rapa59 [ Sat Jan 16, 2016 8:51 pm ] |
| Post subject: | Re: Trouble with oil pressure gauge readings |
drmini in aust wrote: Any joy?? The mini god lol Took it out, no ball just a cup and spring like the pic. Not much mess but cleaned everything and put it back and started the car and quickly rose to around 48 psi at idle. Didn't have time to take it for a run as usually that's when the gauge drops so will confirm 2 Moro |
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| Author: | rapa59 [ Mon Jan 18, 2016 3:46 pm ] |
| Post subject: | Re: Trouble with oil pressure gauge readings |
No joy!!took it for a drive and was good running around 50psi idle around 18psi. After around 10mins dropped again around 8psi at idle |
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| Author: | Mark Gosling [ Mon Jan 18, 2016 6:18 pm ] |
| Post subject: | Re: Trouble with oil pressure gauge readings |
Would stretching the spring help rapa's situation in getting oil pressure up? Anyone tried this, or is a different spring needed? Mark |
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| Author: | gtogreen1969 [ Mon Jan 18, 2016 6:36 pm ] |
| Post subject: | Re: Trouble with oil pressure gauge readings |
You can put washers under the spring to increase tension. |
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| Author: | awdmoke [ Mon Jan 18, 2016 6:37 pm ] |
| Post subject: | Re: Trouble with oil pressure gauge readings |
That only bumps up the maximum cold pressure. More likely the age of the engine is the issue. Might have to try a thicker oil as a temporary fix. |
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| Author: | rapa59 [ Mon Jan 18, 2016 6:43 pm ] |
| Post subject: | Re: Trouble with oil pressure gauge readings |
what does the spring actually do? and Id rather figure out a permanent fix |
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