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  #11  
Old 12-12-2017, 05:42 PM
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Ok I ll drain the oil, remove the sender and hook up a oil pressure gauge with a fitting..I have one.
Another question the oil pick up tube had the plug removed, any reason why would someone remove it? I m thinking maybe removing the bronze plug at the end of the pick up tube would increase oil flow? but will also by pass the strainer, not good...
I m tempted to remove it and see if noise goes away...

Thanks for the help!
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  #12  
Old 12-12-2017, 06:00 PM
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I doubt you need to drain the oil, You might get a dribble but if the car has been stopped long enough, there'll be no residual pressur.

I just looked at etk do find where to plug in and I was coming to say the same thing as capex5 or if you can't find or fit a gauge but it seems doable, you could try hooking up to part 18 with an extra piece of tubing.

First things first, if you've got a pressure probleme, damage can be done which should be averted as much as possible. Bypassing the strainer does not seem like a good plan, you'd be forever wondering if a piece of the guides might break and kill the engine.
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  #13  
Old 12-12-2017, 06:17 PM
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I just opened the bentley manual, using the oil pressure switch port is the way they recommend.

Oil pressur should be 0,5Bar (7psi) at idle and 4.5Bar (66 psi) at regulated pressure for which they don't give an RPM value so you'll have to rev it to see.

As causes for low oil pressure, they suggest :
- Wrong oil grade
- Worn or faulty oil pum or faulty pump pressure relief valve
- Worn engine bearings
- Severe egnine wear.

The pressure relief valve could be an interesting thing to investigate should the pressure read low.
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  #14  
Old 12-12-2017, 06:19 PM
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yeah that s what happen, the guide seized the oil pump. But on the other end, if the plug was not removed and the pump wouldn't have seize I would have driven til the guide explode and ruin my engine after the chain skipped a tooth ... good side of everything i suppose.... yes oil pressure is key but that s not going to confirm the difference in oil pressure on each bank. That s my next step, I will report!

Thanks again!
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  #15  
Old 12-12-2017, 06:22 PM
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If I recall i think it s 66 psi at 1500rpm... where is the pump pressure relief valve? if it s in the pump I changed it..if not, I have no clue where it s at.
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  #16  
Old 12-12-2017, 06:37 PM
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I juste looked into that, ETK was no help but bentley manual had a nice picture, its vertical above and slightly to the side (when looked at from the bottom) of the oil pick up (strainer). Pieces are held by a clip and if some debris is blocking the piston (tight) from closing correctly, you'll never have enough pressure through the whole engine.

You'll need to drop the pan to check it so I still recommend checking the pressure first (save some oil). If the oil pressure is not strong enough, it might be barely enough for bank 2 and a little low on bank 1.
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  #17  
Old 12-12-2017, 06:52 PM
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yes looking at it now on the Bentley...I changed the pump, got a factory BMW pump, so unless that s defective...that pump is buried! whole front end had to come apart to get to it. ugh

Last edited by X5M62; 12-12-2017 at 07:10 PM.
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  #18  
Old 12-12-2017, 07:22 PM
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for more info:
Remove oil pressure switch.
Fit LRT-12-052/10 to oil filter housing and fit LRT-12-052C to LRT-12-052/10, tighten unions.
Check engine oil level, top-up if necessary.
Connect battery earth lead.
Start and run engine until normal operating temperature is reached.
Note oil pressure readings with the engine running at idle and at 3500 rev/min .
Minimum pressure at idle = 0.5 bar
Maximum regulated pressure = 4.5 bar
Switch off engine.
Remove LRT-12-052C.
Remove LRT-12-052/10.
Clean oil spillage.
Fit oil pressure switch.
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  #19  
Old 12-13-2017, 11:07 AM
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Drove it to work this morning took it easy...P0012 code came on. I got the oil pressure gauge, will attempt to connect it tonight. Loud tapping and P0012 are I assume both related to low oil pressure...keep you guys posted!
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  #20  
Old 12-13-2017, 11:42 AM
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P0012 is "A Camshaft position timing over-retarded (Bank 1)" so yes it could very well be linked to oil pressure.
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