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| oil pressure https://forums.tipec.net/viewtopic.php?f=25&t=1452 |
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| Author: | trx [ Fri Jul 18, 2008 9:30 am ] |
| Post subject: | oil pressure |
sorry to keep asking for advise but. got my car back wednesday after recon head and fresh oil cooler and casing,running a hell of a lot better but my oil pressure as dropped from four to five bars to just three but never drops below,a little bit worried. got 10/40 semi-synthetic oil in at the moment thanks Dave |
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| Author: | ExAudiSi [ Fri Jul 18, 2008 12:44 pm ] |
| Post subject: | Re: oil pressure |
Is that the pressure at tick over or higher revs? Three bar at idle when warm is fairly normal I would say. |
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| Author: | tr7v8 [ Fri Jul 18, 2008 2:23 pm ] |
| Post subject: | Re: oil pressure |
Yup agreed, mine ticks over at around 3 Bar & rapidly rises to 5 with a few revs. I run 15/50 to try & keep the oil consumption down. Although the pressure is around the same with 10/40.... |
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| Author: | starboard147 [ Fri Jul 18, 2008 4:43 pm ] |
| Post subject: | Re: oil pressure |
I use 10W50 and noted that the idle oil pressure went up by around 1 bar swapping from 10W40. Notwithstanding that, it idles at 3 but jumps up with hardly any revs... |
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| Author: | lindsayhbrown [ Fri Jul 18, 2008 6:46 pm ] |
| Post subject: | Re: oil pressure |
my oil pressure is at 5 bar when cold and if any load on engine, when warm at tickover between 3 and 4 bar using mobil 1, so yours sounds about right |
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| Author: | trx [ Sat Jul 19, 2008 5:54 pm ] |
| Post subject: | Re: oil pressure |
thanks folks. mine goes to three wont go above but never drops below will be keeping an eye on it. thanks Dave |
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| Author: | jameso [ Sun Jul 20, 2008 4:55 am ] |
| Post subject: | Re: oil pressure |
It may be a damaged oil pressure sender, it is mounted near the oil cooler. On my last 944 the oil pressure gauge didn't go above 3 bar and I found a dent in the sender, swapped the sender and up to 5 bar again. If it wasn't for the fact that I knew I had knocked it whilst working on the car I would have worried about all sorts. The other possibility is the oil pressure relief valve may be sticking and that is a part of the oil cooler assembly. The valve can stick if the cooler is miss-aligned or if the valve is corroded. Either way I would take it back to be checked if you paid for the work. Also why was the oil cooler casing replaced? |
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| Author: | trx [ Sun Jul 20, 2008 5:36 pm ] |
| Post subject: | Re: oil pressure |
i got a complete oil-cooler and casing off another engine James when mine was full of mayo because of the seals going, for a tenner thought it was not a bad idea. before changing this the oil-pressure never dropped below four even when hot maybe whip it off and check it out. Dave |
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| Author: | tr7v8 [ Sun Jul 20, 2008 5:42 pm ] |
| Post subject: | Re: oil pressure |
It could be a pressure relief valve issue then. Their is a special Porsche tool for this to ensure the correct alignment. |
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| Author: | jameso [ Mon Jul 21, 2008 12:58 pm ] |
| Post subject: | Re: oil pressure |
This link may be of help http://www.clarks-garage.com/shop-manual/lube-02.htm |
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| Author: | trx [ Mon Jul 21, 2008 10:38 pm ] |
| Post subject: | Re: oil pressure |
thanks James just another headache i suppose. Dave |
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