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Author Subject: oil pressure, running pressures.
robthe6

Senior User

Location: northamptonshire

Registered: 06 Jun 2008

Posts: 667

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Post #1
i need to know what other people are getting on start up cold. start warm. cold idle. warm idle. and warm pressure from 1krpm to 2krpm and 2k to 4krpm and 4krpm to 6krpm.

when my car is started cold its normally about 4-5bar cold idle at start up. an warm idle at 2bar. which i think is a little low. but soon as you get revs moving its up to 4bar at any where from 2.5krpm. and today when i had to car nice an hot. the pressure was just below 2bar so i was worried as iv just done an engine change after big end bearing so im paranoid over loosing pressure. could someone shed some light on to my problem.

crank pulley bolt was fitted 150miles ago to 95ft_lb with loctite so i doubt thats come loose.
sump was removed and washed. so i know thats clean.
filter that was fitted wasnt a pug one but still had the little valve thing in the bottom of the filter.
im using castrol magnatec 10-40w as im told this is ok for it.

is this going to be a case of remove sump and change oil pressure spring?

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1996 ph1 Sigma GTI6 - Dead Sad
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Posted 8th May 2012 at 18:12
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robthe6

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Location: northamptonshire

Registered: 06 Jun 2008

Posts: 667

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Post #2
no one? well i went out for a drive in the car. the oil pressure never rises above 4bar even at 5k+ rpm. get 4 bar oil pressure about 2.2 to 2.5k rpm. whats wrong with this thing. getting a bit fed up. going to drop the sump tomorrow take the oil pump off and change the pump spring.

________________________________________

1997 ph1 bianca GTI6 - The looker
1996 ph1 Sigma GTI6 - Dead Sad
1999 Red Rallye - The Daily
2005 Nissan Navara D40 - Family car
1968 Mustang Coupe - The dirty little secret
Put ya foot down, put ya foot down we'll loose em easy!
Posted 8th May 2012 at 23:42
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welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,817

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Post #3
I wouldn't take it apart just yet, get a proper oil pressure test done.

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Posted 8th May 2012 at 23:50
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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

Posts: 21,768

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Post #4
The spring is rated at 6 bar anyway...

2 bar for a warm idle is about right. Yes

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Posted 9th May 2012 at 00:01
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welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,817

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Post #5
6 bar @ 4k rpm is the ideal on a good engine.

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Posted 9th May 2012 at 00:05
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robthe6

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Location: northamptonshire

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Posts: 667

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Post #6
right this morning my mate said he would drive me to work. so thought i would just see what she does on a cold start. 5.9 bar. so i drove to work about 3miles to work low speed a few traffic lights on the way takes 10-15min an just as i got to work the temp is about 85c an oil at 2bar. rev'd an jumped to 4 bar an did go past 4 bar too on higher revs.

yesterday i couldnt get past 4 bar even at plus 5krpm. now i know the guage aint dodgy because yester when it was at 1.9bar hot i could hear the tappets so they aint getting enough oil ( there all clean an free, checked on build.)

so have i got a worn out pump so its not creating enough pressure when warm or is something else at play.

________________________________________

1997 ph1 bianca GTI6 - The looker
1996 ph1 Sigma GTI6 - Dead Sad
1999 Red Rallye - The Daily
2005 Nissan Navara D40 - Family car
1968 Mustang Coupe - The dirty little secret
Put ya foot down, put ya foot down we'll loose em easy!
Posted 9th May 2012 at 09:55
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welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,817

Status: Offline
Post #7
1.9 on idle is ok, try different oil.

low oil pressure warning is at 1 bar.

________________________________________

need a part number? get on here - http://public.servicebox.peugeot.com

Bring on the Trumpets.

Posted 9th May 2012 at 09:59
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jammapic

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Location: Manchester

Registered: 11 Jun 2010

Posts: 778

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Post #8
I've had exactly the same problem on mine (ok it's a diesel) recently, whereby even when up around 5krpm it wouldn't make any more than 3bar hot.

6bar spring, and new oil pump and it's up over 4bar hot at 5krpm... and it's got 120k on that motor!

JP

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Posted 9th May 2012 at 10:03
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pete_rallye

Seasoned Pro

Location: Yorkshire

Registered: 12 Dec 2002

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Post #9
That's fine, when the oil is thin and flowing freely you won't get the oil pressure much above 3 bar, mine used to sit at nearer 1 bar at idle after coming in from track. Basically as the oil gets hotter, the oil pressure will drop. You don't need massive oil pressure, just consistent oil pressure.

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Posted 9th May 2012 at 10:47
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ruan

Junior User

Location: Truro

Registered: 17 Sep 2009

Posts: 64

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Post #10
The better the oil you buy, the more consistent the oil pressure will be from my experience... I'm not a fan of Castrol in all honesty - mostly down to the fact they shove it in 4l bottles knowing that most cars hold about 5l...

But they big up the oil and give them fancy containers, but it's still a pretty poor semi-synthetic. I've found with my car that the quality of the oil is quite important to much it resists changing viscosity with extremes of temperature - the poorer the oil quality, the less pressure when hot as it's so much thinner.

I've always heard 1bar of oil pressure for every thousand RPM is within tolerance when at normal operating temp... How much I'd listen to that I don't know...

It seems these engines only sit up against the 6bar regulator on cold idle, once warm, they're nowhere near - so on XUDs and other XUs that use the lower pressure spring, it'll really only make a difference on idle when cold...
Posted 9th May 2012 at 10:56
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dangti6

aka JKshooter

Location: Taunton, Somerset

Registered: 15 Jun 2006

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Post #11
Nice signature Thumbs up

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    • Posted 9th May 2012 at 11:10
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    daveyboy

    aka Jim Davey

    Location: Southampton

    Registered: 01 Oct 2007

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    Post #12
    dangti6 wrote:
    Nice signature Thumbs up


    Christ, it's turning into 306.net here Thumbs down

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    Posted 9th May 2012 at 13:56
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    ruan

    Junior User

    Location: Truro

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    Post #13
    I'm not 100% sure who that's directed at...?
    Posted 9th May 2012 at 14:07
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    welshpug!

    Capt Pedantic

    Location: Bigend, Wales.

    Registered: 27 Mar 2007

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    Post #14
    ruan wrote:
    I'm not 100% sure who that's directed at...?


    read the posts Thumbs up

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    Posted 9th May 2012 at 14:09
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    ruan

    Junior User

    Location: Truro

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    Post #15
    I'm obviously far too dense.
    Posted 9th May 2012 at 14:11
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    welshpug!

    Capt Pedantic

    Location: Bigend, Wales.

    Registered: 27 Mar 2007

    Posts: 25,817

    Status: Offline
    Post #16
    it was a reference to the OP's sig.

    ________________________________________

    need a part number? get on here - http://public.servicebox.peugeot.com

    Bring on the Trumpets.

    Posted 9th May 2012 at 14:15
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    ruan

    Junior User

    Location: Truro

    Registered: 17 Sep 2009

    Posts: 64

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    Post #17
    Fair enough, yeah, I must be too dense.
    Posted 9th May 2012 at 14:17
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    dangti6

    aka JKshooter

    Location: Taunton, Somerset

    Registered: 15 Jun 2006

    Posts: 10,305

    Status: Offline
    Post #18
    ruan wrote:
    Fair enough, yeah, I must be too dense.


    Don't worry about it mate. You'll fit in just fine Smile

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    • Posted 9th May 2012 at 14:19
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    woody.

    Senior User

    Location: London

    Registered: 18 May 2009

    Posts: 799

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    Post #19
    dangti6 wrote:
    Don't worry about it mate. You'll fit in just fine Smile

    But he likes, er, er, diesels Shock Unsure
    Posted 9th May 2012 at 15:20
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    ruan

    Junior User

    Location: Truro

    Registered: 17 Sep 2009

    Posts: 64

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    Post #20
    Shhhhhh - I do actually own a GTi6 currently...
    Posted 9th May 2012 at 15:32
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    robthe6

    Senior User

    Location: northamptonshire

    Registered: 06 Jun 2008

    Posts: 667

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    Post #21
    ruan! shocker!

    ________________________________________

    1997 ph1 bianca GTI6 - The looker
    1996 ph1 Sigma GTI6 - Dead Sad
    1999 Red Rallye - The Daily
    2005 Nissan Navara D40 - Family car
    1968 Mustang Coupe - The dirty little secret
    Put ya foot down, put ya foot down we'll loose em easy!
    Posted 9th May 2012 at 18:29
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    atterz

    Seasoned Pro

    Location: Stafford

    Registered: 18 Feb 2011

    Posts: 1,134

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    Post #22
    Big grin

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    owain wrote:
    A GTI-6 with a good dashboard and the seats down can outsprint an E46 M3 in July.
    Posted 9th May 2012 at 19:46
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