+- 306oc - Peugeot 306 Owners Club & Forum (https://www.306oc.co.uk/forum)
+-- Forum: Engines (https://www.306oc.co.uk/forum/forumdisplay.php?fid=16)
+--- Forum: XUD Section (https://www.306oc.co.uk/forum/forumdisplay.php?fid=11)
+--- Thread: oil pressure (/showthread.php?tid=31138)
oil pressure - HDIkyle - 09-07-2015
What is the expected oil pressure for an xud? Fitted an oil cooler and Mines gone up I have a 100psi gauge and now isles warm at 50 and off the gauge when driving. Where without cooler was 20psi idle and 70/80 driving
RE: oil pressure - powerandtorque - 09-07-2015
XUD9 engines should have a 5 bar pressure relief spring, so you shouldn't really be seeing more than that with hot oil. 5 bar is approximately 72psi, so that tallies up with the 70-80 figure that you were seeing before.
If it's gone up that dramatically since fitting the oil cooler and the reading is accurate, then I'd hazard a guess that the oil cooler must have a massive restriction somewhere.
Obviously lower oil temperature will mean thicker oil and more pressure, but I'd be surprised if you've had such a dramatic change in temperature that the pressure figures have changed that much. Big clue will be if the figures are also dramatically higher a few miles into a journey when the oil won't be fully upto temperature.
RE: oil pressure - Piggy - 09-07-2015
that is odd. As said there is a 5bar limiter basically.
Mine is 5 bar cold at idle.
Once warm about 2bar, climbs with rpm to no higher than about 4.5bar flat out
RE: oil pressure - HDIkyle - 09-07-2015
It stays same once warm even after 25 30 mins when I get to work Thats with oil temp at 80-85.,its only a small 9 row cooler
Where is the relief spring?
RE: oil pressure - powerandtorque - 09-07-2015
Relief spring is part of the oil pump, sandwiched between the main body of the oil pump and the pickup casting.
RE: oil pressure - HDIkyle - 09-07-2015
Argh so not something easily checked then, Will try get another cooler to try its a second hand cooler so might as simply as a blockage in there