Oil pressure issues

Duty_Flex · 06-27-2018, 09:12 PM

Car had a busted oil cooler, replace the cooler and getting the low oil pressure light. Cars has 9.5 litre of oil replace the pressure switch issues remain the same. Use an oil pressure gauge to check pressure and zero pressure car runs with the normal V8 sound not abonormal knocking. Any suggestion will be appreciated of what could be my issue and I’m not getting no oil reading

deansbimmer · 06-28-2018, 10:03 AM

First, it is very unwise to run an engine you suspect has zero oil pressure. The oil pressure reading is taken directly from the main oil gallery. If there's no pressure there and you're running the engine several times with various sensors and mechanical gauges trying to get a reading you're just destroying the bearings and are going to ruin your engine, if you haven't already.

I'd first have a qualified technician familiar with these S65's check the filter housing and its thermostat, check valve, etc for blockages etc. If there's no problems there to impede flow then it'll be with the oil pump(s) and you'll need to drop the subframe and oil pan to investigate further.

06-27-2018, 09:12 PM	#1
Duty_Flex New Member 0 Rep 20 Posts Drives: 2008 E90 M3 Sedan Join Date: Nov 2017 Location: toronto,Caanada iTrader: (0)	Oil pressure issues Car had a busted oil cooler, replace the cooler and getting the low oil pressure light. Cars has 9.5 litre of oil replace the pressure switch issues remain the same. Use an oil pressure gauge to check pressure and zero pressure car runs with the normal V8 sound not abonormal knocking. Any suggestion will be appreciated of what could be my issue and I’m not getting no oil reading
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06-28-2018, 10:03 AM	#2
deansbimmer BimmerPost Supporting Vendor 3749 Rep 2,907 Posts Drives: 2011 E93 M3 Join Date: Nov 2014 Location: DFW, Texas iTrader: (17) Garage List 1988 BMW M3 [0.00] 2013 BMW M3 [0.00] 2011 X5M [0.00] 2011 BMW M3 [0.00]	First, it is very unwise to run an engine you suspect has zero oil pressure. The oil pressure reading is taken directly from the main oil gallery. If there's no pressure there and you're running the engine several times with various sensors and mechanical gauges trying to get a reading you're just destroying the bearings and are going to ruin your engine, if you haven't already. I'd first have a qualified technician familiar with these S65's check the filter housing and its thermostat, check valve, etc for blockages etc. If there's no problems there to impede flow then it'll be with the oil pump(s) and you'll need to drop the subframe and oil pan to investigate further.
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