clark822

Got in the car this morning covered a couple of miles and noticed the was reading 30psi pulled over checked everything nothing out the normal so is it the oil pump or something worse ? Oil was changed at 2500 miles ago for 1040 synth its a 97 uk turbo cheers jon

merlin24

iTrader: (1)

I would check the oil pressure gauge first jon to eliminate the gauge or sender unit being faulty before you look at other possibility's.
If the oil pressure is lower than it normally is when driving, its possible that the relief
valve in the oil pump is sticking open or the backing plate screws on the pump are coming loose.

Mick.

clark822

Cheers kind of what i was thinking about the pump working loose , oh well looks like ill be changing the cambelt sooner than i wanted cheers jon

The Rig

iTrader: (13)

you dont say at what point the 30 psi is ?

is it at idle when hot/cold, when crusing along doing 30 mph etc ?

clark822

its driving round at 30 at about 1700 revs was thinking of changing the oil again see if it makes a improvment

The Rig

iTrader: (13)

30 psi is about 2.5 bar so at 1700 rpm i wouldnt say this is low low at idle mines 2 bar which is about 1000 rpm

what is the pressure at 70 mph at 4000 rpm say ?

or at cold idle 1st thing in the morning ?

clark822

might just me being paranoid then its roughly 80+ at those revs but once warm and in traffic it drops to nearly 0 ?

The Rig

iTrader: (13)

ah,if its dropping to 0 then there is a problem

At idle when hot readin ?
at idle when cold readin ?

does it increase when you rev it at idle ?

but if it is reading 0 at times,does sound terminal if the meter is accurate,from my experience they usually are if no leaks etc,its nice to think the dial/meter is faulty but generally they are pretty reliable

clark822

yeah when hot @ idle but if blip the throttle it goes back up to 20psi but can watch it hover where it will dip then rise with no revs ?

big t5

iTrader: (7)

hi mate,i have been so paranoid lately about my oil pressure as i fitted the usual gauges,oil temp,water temp and oil pressure.on cold start all ok but when it got hot the oil pressure reads about 14/15 psi.went to scooby clinic todayto ask advice and the owner told me to take out the gauges and stop worrying as his scoob only reads 15 psi on defi gauges using 10/50 oil wheras i am using 15/40.he says that as soon as people put in gauges they frighten them selves with the oil pressure.not saying there is nothing wrong with yours but hope this info helps,cheers tony

The Rig

iTrader: (13)

ha ha like that,gauages tell you somethings up,i know,remove the gauge !

my arm hurts, cut it orf !!!!

ha ha ha

clark822

Makes sense i guess at least i will get to do a rebuild on the engine to forge it for a couple of grand instead of a few hundred to replace the timing belt and pumps ? I know what you mean about them making you a bit paranoid but i would rather have them then not

joz8968

iTrader: (13)

Gauges, sensors, etc. are good... so long as you have the discipline to act and stop driving, or come off boost etc. (depending on the problem).

The juxtaposition, though, is that human nature tends to behave along the lines of: "Awww f**k, I don't want to believe the bad news the gauge is telling me, so I'll turn a blind eye......"


Monitoring in order of priority (for me at least) would be:-

1) Knock level/alarm trigger (with possibly AFR supplementary gauge)
2) Boost gauge
3) Oil pressure
4) Oil temp