jimjames2uk
Member
- Posts
- 85
- Location
- guildford
anyone know what the oil pressure should be on a series 3 diesiel engine
oil presure
- Thread starter jimjames2uk
- Start date
This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
slob
Well-Known Member
- Posts
- 22,488
- Location
- Harrogate or London
between 40 and 60 psi
slob
Well-Known Member
- Posts
- 22,488
- Location
- Harrogate or London
ish
tom bola
New Member
- Posts
- 121
- Location
- East Lothian
Ma gauge reads 50 when movin. 40 ish when no movin. Never seen it ova 50 tho.
You don't want too much of that pressure stuff.
Enough is more than plenty, and there is a pressure limiting valve (some call it a pressure relief valve) in the system to stop the pressure going too high.
I had an Austin Maxi (great car!) way back and I fitted an oil pressure gauge to it. It went twice round the dial as soon as I started up! Pressure relief valve was seized solid - shut. It was getting well over TWO HUNDRED psi oil pressure!
The oil is there to lube, to cool, and to clean things up.
If the pressure goes too high then too much oil gets sprayed about inside the engine, it may get smokey, and sometimes seals get blown out. Too much oil pressure is all bad news.
Your engine will come to no harm as long as you have SOME pressure, and a steady 20 psi will do just fine, though between 40 and 60 is probably intended.
CharlesY
Enough is more than plenty, and there is a pressure limiting valve (some call it a pressure relief valve) in the system to stop the pressure going too high.
I had an Austin Maxi (great car!) way back and I fitted an oil pressure gauge to it. It went twice round the dial as soon as I started up! Pressure relief valve was seized solid - shut. It was getting well over TWO HUNDRED psi oil pressure!
The oil is there to lube, to cool, and to clean things up.
If the pressure goes too high then too much oil gets sprayed about inside the engine, it may get smokey, and sometimes seals get blown out. Too much oil pressure is all bad news.
Your engine will come to no harm as long as you have SOME pressure, and a steady 20 psi will do just fine, though between 40 and 60 is probably intended.
CharlesY
slob
Well-Known Member
- Posts
- 22,488
- Location
- Harrogate or London
am guessing here but i think the question in question was intended to find out what the oil pressure should be in a 2.25 series injun. and the answer sans waffle and bollocks is between 40 and 60 psi ish!
yella
New Member
- Posts
- 15,991
dint you say that in the fust place lord slob 
slob
Well-Known Member
- Posts
- 22,488
- Location
- Harrogate or London
aye but some folk can't read
tom bola
New Member
- Posts
- 121
- Location
- East Lothian
Let the doffing of hats and bowing commence Lord Slob hehe far better than super member....
Lord Slob hehe far better than super member....
jimjames2uk
Member
- Posts
- 85
- Location
- guildford
thanks fellas think have a problem then starts at 20 ish and as gets hotter oil thins drops off to around nothing ish
yella
New Member
- Posts
- 15,991
try replaciong the sendor unit
slob
Well-Known Member
- Posts
- 22,488
- Location
- Harrogate or London
aye sounds that way.... what huile have ye got in it?
Well now, that is a classic symptom of low oil pressure (DUCK .!) .... and the first thing to do is LISTEN as the engine is ticking over. If there are terrible clonking and clattering noises then it looks like a failure of crankshaft main bearings or similar.
However, don't give up yet. LOW pressure like that is also a typical symptom of a pressure relief valve that is stuck wide OPEN, and this is dead easy to fix once you find the valve, which I think is an integral part of the oil pump. Sump OFF job unfortunately.
What does a recon oil pump cost? Might be the way to go.
CharlesY
However, don't give up yet. LOW pressure like that is also a typical symptom of a pressure relief valve that is stuck wide OPEN, and this is dead easy to fix once you find the valve, which I think is an integral part of the oil pump. Sump OFF job unfortunately.
What does a recon oil pump cost? Might be the way to go.
CharlesY
slob
Well-Known Member
- Posts
- 22,488
- Location
- Harrogate or London
unless yer certain what oil is in it. i'd change that first before rippin things apart.. its easy to do and will be cheaper and quicker than checkin yer pump. if its after changing the oil it still does it ,then you can try other stuff.
its not unknown for turnips to put oil that is too light in there. the result being once it gets hot it becomes too thin.
its not unknown for turnips to put oil that is too light in there. the result being once it gets hot it becomes too thin.
Good plan that, and one glance at the oil coming out will tell you how thin it is.
However, even if some clot put auto-box transmission fluid in the sump, I would not expect total collapse of the pressure unless the whole engine is pretty tired.
It was a good suggestion to swap the oil pressure sender, or better to fit a gauge that isn't electric, to check the pressure really is very low. You might get lucky and find it's a dodgy sender at three quid.
But I fear not. So take care in case extremely low oil pressure ends up causing catastrophic damage.
CharlesY
However, even if some clot put auto-box transmission fluid in the sump, I would not expect total collapse of the pressure unless the whole engine is pretty tired.
It was a good suggestion to swap the oil pressure sender, or better to fit a gauge that isn't electric, to check the pressure really is very low. You might get lucky and find it's a dodgy sender at three quid.
But I fear not. So take care in case extremely low oil pressure ends up causing catastrophic damage.
CharlesY
slob
Well-Known Member
- Posts
- 22,488
- Location
- Harrogate or London
going by his post about staring at 20 and dropping orf , it dint sound like a gauge or sender problem.
I agree with that.
There's only so many places the pressure can be lost from, assuming of course that the pump is making a decent pressure to start with.
Pump may be goosed.
CHarlesY
