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#3412741 - 07/02/14 05:03 PM Re: Oil Pressure Question ... is my engine dead? [Re: rc84]
OVERKILL Offline


Registered: 04/28/08
Posts: 25660
Loc: Ontario, Canada
Assuming your "plug in gauge" noted in the OP is in fact a reliable mechanical oil pressure gauge and not an electric gauge of some sort that leverages the factory sending unit I would indeed agree that you have a worn bottom-end, likely rod bearings, which tend to wear-out before the mains do in most engines that I have experience with.

If this is the case you can't really do anything about it without a tear-down or at least a partial tear-down. You could roll-in new main and rod bearings assuming the journals are OK, but of course that requires inspection, which will of course require a partial tear-down.
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#3416868 - 07/07/14 07:49 AM Re: Oil Pressure Question ... is my engine dead? [Re: rc84]
rc84 Offline


Registered: 06/30/14
Posts: 3
Loc: France
Hi,

Many thanks for all the replies.

Yes by 'plug-in' guage I meant a mechanical pressure guage. I do not know how accurate it is but it is new and a reputable brand, so maybe a bit off but not too much.

I will replace the coolant / thermostat / sensor, check & clean the EGR values and check & clean the oil cooler etc. in case this brings down the temperature. But tending to agree with everyone that it sounds like main bearings .. gulp.

If anything positive will post back.

Thanks
Russell

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#3417112 - 07/07/14 12:15 PM Re: Oil Pressure Question ... is my engine dead? [Re: rc84]
yvon_la Offline


Registered: 05/20/14
Posts: 598
Loc: quebec canada
Remove oil pan and check oil pickup area for issue .if it isnt bent or clogged ?replace the oil pump
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#3425494 - 07/15/14 01:00 PM Re: Oil Pressure Question ... is my engine dead? [Re: rc84]
Greasymechtech Offline


Registered: 07/11/14
Posts: 52
Loc: Paradise of Florida
Step up to a 0w40 or 5w40 full synthetic oil.
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#3426134 - 07/16/14 03:14 AM Re: Oil Pressure Question ... is my engine dead? [Re: rc84]
riggaz Offline


Registered: 01/26/10
Posts: 188
Loc: England
According to my data system on that engine you should have between 2.3 - 3.7 bar @ 2000 rpm (hot) so you obviously have a pressure issue, something in the oil circuit is definitely worn.

If there are no noises coming from the engine then I'd be looking towards the oil pump.


Edited by riggaz (07/16/14 03:16 AM)

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#3426145 - 07/16/14 04:16 AM Re: Oil Pressure Question ... is my engine dead? [Re: rc84]
chrisri Offline


Registered: 06/01/14
Posts: 183
Loc: Fiume,Croatia,EU
Does your car run with DPF? If not switch to ACEA A3/B4 5w40 oil and you will gain oil pressure. If however your car have DPF then use C3 5w40 oil. This is a low saps oil but with a minimum HTHS viscosity of 3.5 mPa.s and are superior to a A5/B5 oils.
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#3426189 - 07/16/14 06:25 AM Re: Oil Pressure Question ... is my engine dead? [Re: rc84]
yvon_la Offline


Registered: 05/20/14
Posts: 598
Loc: quebec canada
Oil filter plugging up!same thing happen on cummins isx.put a bigger version of oil filter
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#3426190 - 07/16/14 06:26 AM Re: Oil Pressure Question ... is my engine dead? [Re: rc84]
yvon_la Offline


Registered: 05/20/14
Posts: 598
Loc: quebec canada
That sooth and particulate come from the oil.might want to change oil brand .
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#3426202 - 07/16/14 06:40 AM Re: Oil Pressure Question ... is my engine dead? [Re: rc84]
SHOZ Offline


Registered: 06/28/03
Posts: 1562
Loc: Illinois
This is common on the Ford Taurus SHO V6 Yamaha motors after 100k or so. They usually just drop the oil pan and change out the rod bearings. The oil pump is hi flow low pressure so any wear and the idle pressure drops when hot. I did mine in the driveway in about 4 hours. Found one of the bearings cracked. The Main bearings are usually OK and seldom changed.

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#3426651 - 07/16/14 03:46 PM Re: Oil Pressure Question ... is my engine dead? [Re: Chris142]
Rollins Offline


Registered: 12/12/06
Posts: 114
Loc: Europe
Hello,


It seems that you have the infamous DV6 engine .

When the injector seals go south hot gasses from the cylinder make their way to the valve timing area (no gasket between the cylinder head and its upper part ...just some silicone !)

http://www.motor-talk.de/forum/aktion/Attachment.html?attachmentId=685547

You can imagine the result ...

http://www.theturboguy.com/uploads/1/0/3/5/10358883/api-presentation_1.6_hdi_carbon_issues-3-2.pdf

http://images.forum-auto.com/mesimages/511236/Fuitejointsdinjecteursexplication.jpg

Usually injector seals failure manufests itself with with some gas/oil leak around the injectors(lifting the plastic cover at least once a month is a must here).The sooner you catch the problem the better.

Althought this may not be the case here, I'd have it inspected ( dropping the oil pan-preferabley- or removing the vacuum pump would tell if there was any deposits)...
There is plenty of info about this design flaw affecting severals brands using this engine...


Why was the oil pickup replaced anyway? I hope it was not an attempt to get rid of the deposits caused by injector seals failure...it would take greater efforts to do the job.

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