smartrs

what should my oil pressure be at tick over ? the enginehas just had a full re-build using a new high pressure pump and was just wondering what the pressure should be at idle ?

smartrs

any one ?

Alvyn

iTrader: (1)

depending on type of oil once up to temp between 35 - 40/45 psi!

cossie4i+

iTrader: (15)

Cold mine is 60psi

Hot about 30-35psi

Steve

andrewg

hot less than 20psi is not uncommon

mainly to do with crank tollarance if its low it usually means you have a good coat of oil on the crank if its very high it could mean its tight and may pick up

so low oil pressure is not always bad

cossieDavedree

exactly,,, and further more as long as the pressure increases when the engine is revved then happy days.

smartrs

i'm not seeing nothing like that on tick over i get about 2 bar if i bring the revs upto about 2000rpm it on some shitty oil for the running in period if that makes and differance but the gadge reads almost nothing in pressure on first start up it was around 3.5 bar but i dont see nothing like that now , i'm just wondering if the gadge is faulty

cossieDavedree

IF your running in you could have some swarf in the relief valve, or the oil could have become contaminated from running in.. How many miles you done on it??
What is your idle speed, and from cold what does the pressure show?

Alvyn

iTrader: (1)

If it's not the gauge then there MUST be a problem internally m8! as even a standard pump will give you roughly 25 psi on tick over and your running a high pump!

smartrs

its only just been run on the drive i've had the diff and brakes to d on it too so its not been on the road so 0 miles i see about 2 bar on start up but that drops down after that . i cant see how any swarf can be in there every thing was cleaned checked cleaned again i put together with no way any thing could of got in there . i removed the oil filler cap while it was running and i can see oil being thrown around

RichieST

iTrader: (2)

I know its not a cossie, but I had an oil pressure guage on an old focus 1.6, used to hover between 5-10psi at hot idle, and it was fine, worried me a bit though!

RichieST

iTrader: (2)

A mate of mine had a brand new fucked pump on his old saph, cost him an engine

With the turbo oil return undone, there was a good stream of oil coming out the pipe when the engine was being turned over on the starter, with the fucked pump in it was barely a run, more of a drip!

cossiedave

iTrader: (1)

what pump you used

smartrs

umm not sure it is a up rated pump from a well known supplyer

cossiedave

iTrader: (1)

4x4 or 2wd is what i mean m8

smartrs

sorry 2wd

cossieDavedree

Trust me mate I have been there exactly the same problem as you,
Fully rebuilt engine lost pressure all of a sudden,

First time started ever it was 65 psi on cold. After running it in 800 miles later the pressure dropped to 15. From then it would be 30 at cold first startup then stay at 15/20and max pressure was 40 at 5k rpm.

Took of sump and the bearigns were fucked and swarf everywehere,
The cause was a dodgey new oil pump for me. But you could have a sticky relief valve + How did you prime the engine when first starting it ??

smartrs

the mechanic turned the oil pump some how before the first start up

cossieDavedree

I use a drill on the aux pulley with cambelt off.

Well hopefully it won't be nothing to serious fella,
Good luck let us know how you get on

smartrs

i really hope i dont have to pull the engine apart again i think my missus would actually kill me if i have to spend mush more on it before it gets back on the road

smartrs

whats going to be the best way to test this ?

Danny @ Enhanced Performance

iTrader: (3)

just do an independent check with another oil pressure gauge,take it from the oil feed to the turbo..if thats the same its engine out and sump of..hopefully youve done no damage to the crank/shells etc
cheers danny

smartrs

i tried connecting my other gadge to the turbo oil feed but it does not seal quite correctly so i could not get a reading from that but i do now know there is a steady flow at the oil feed pipe . ive also noticed the gadges do funny things when other electrical stuff is turned on and am thinking maybe there not getting a good ground which is causing the dodgy readings and my panicing

LHD220Turbo

iTrader: (4)

i had some really shitty gauges in my 2wd cossie; the oil pressure was really low which worried me - if i turned all the electrics on the gauge would read zero oil pressure!!!

but the engine in mine was perfect; i connected up another mechanical gauge and the pressure was ideal - panic over

LHD220Turbo

iTrader: (4)

if another gauge gives a low reading, i would whip the sump off and check that the pump drainer isnt blocked or anything silly like that

smartrs

this is what is happening if i turn the lights on they are cheap gadges they are only there until i get some decet ones think i'll get some sooner rarther than later now . i will have the sump off too to have a look

LHD220Turbo

iTrader: (4)

dont panic then; my shite gauges only gave me 2 bar when cold and would virtually disapper at idle once warm.

it wasnt helped because of the sender was a different make to the gauge itself, all senders differ in resistance which again will give an inaccurate reading.

if you have zero oil pressure, the motor will probably knock it tits off at idle, if the gauge does raise with revs then i dont think you have anything to worry about.