wolf cosworth

When engine is shutted down I got 1,5 to 2 bar oil pressure when running 4 to 4,5 bar ?? Even after a week of standing still there is like 1,5 bar left over when ignition is switched on .
Is this oil being hold under pressure from the pump to the oil filter ?

Pressure switch is located with sandwich plate by the oil filter ?

tabetha

You have a duff gauge there is no way on earth the engine could hold pressure like that, for a few seconds after shutting off yes but even 10 seconds later there will be zero pressure there, the oil filter contains a anti drain back valve, but this only ensures oil kept in gallery etc, it cannot physically hold pressure as it leaks past the crank shells, as it is designed to do, otherwise it would mean the crank was seized.
tabetha

wolf cosworth

Damn this is the 3 sensor in as many years ...

Could it be there I got a pressure sender on the fuel line also and are using a switch for oil / gasoline pressure with same gauge in dash that this kills the sender ?

Steven

ClevoCapri

iTrader: (1)

I would be looking at the calibrations of each sender. Usualy fuel pressure is alot higher than oil pressure. So only the sender that is designed to work with the gauge will be acurate.
Be best to get gauges with matching senders for each pressure, not try to get one gauge doing 2 different pressures.

tabetha

If you use a oil pressure sender to read fuel pressure it's likely to wreck the sender.
Fuel pressure is around 3 bar at idle, and raises under boost, should be around 3.5 bar with the vacuum pipe off and plugged.
Oil pressure should be around 35 psi hot idle and raise to around 50 psi or more above 2000rpm.
The sender should only be used with the gauge it is sold with to ensure they speak correctly to each other otherwise readings can be way way off.
tabetha

wolf cosworth

Sender for the fuel is a sender specific for fuel

The gauge in the dash I was sharing .

Will buy another gauge and new sender for the oil one.

Starts to be looking like a cockpit froma plane now !

Paul_RS

iTrader: (4)

So you have one gauge thats trying to show BOTH oil and fuel pressure?

Is it dual faced or something?

wolf cosworth

nope just got a switch with 2 income for the sensors 1 outcome for the gauge and so I have less dials in my dashboard.

wolf cosworth

Hi Tabetha,
both sensors are 3 to 160 Ohm and 0 to 10 bar so the gauge should be accurate for both of them there it came with the oil kit and I just bought
the fuel sender extra , no ?

Steven

tabetha

With this new info re the gauges the sender as supplied for the fuel rail should indeed be perfectly ok with fuel and you should be able to switch between the two with a switch.
I have a switch in mine where I can flick between inlet temp and air filter temp, works perfect, as would/should a gauge reading pressures where the two senders are the same.
tabetha