Club 80-90 Forums

I'm trying to suss out what's wrong with my JX, I've just brought it & the old boy said there was something wrong with it.... But he was unsure what.
I've sorted a couple of things out, but my question is when it gets upto temperature should there be steam/pressure coming out the dalek cap? Or does this mean the h/gaskets gone??

Sent from my E6853 using Tapatalk

R0B wrote:Remove the cap.if you can suck and blow down the bit that sticks out on it then that's your problem.

I guess you mean the spout on the cap?

Sent from my E6853 using Tapatalk

Yep that's it

R0B wrote:Yep that's it

Ok..
I've just tried it, I can blow only....

Sent from my E6853 using Tapatalk

Unless you are able to make 1 bar of vaccum with your lungs you won't be able to suck any air through the spout if a good cap, it should sound like a duck call when you blow through it

Sent from my SM-G920F using Tapatalk

MGP wrote:Unless you are able to make 1 bar of vaccum with your lungs you won't be able to suck any air through the spout if a good cap, it should sound like a duck call when you blow through it

Sent from my SM-G920F using Tapatalk

But should there be steam/pressure coming out of it on tick over?
Just trying to work out if the head gasket has gone.....

Sent from my E6853 using Tapatalk

Your coolant system is a pressurised system with the engine running. I think that with the cap off, engine warm and at idle and assuming your coolant system is full, it will spill out everywhere. When you rev hard the level will drop with the cap removed.

There shouldn't be however if it's not holding pressure there will.
It sounds like it would be a good idea to use a block tester on it to determine if there are any exhaust gasses in the coolant.

Sent from my SM-G920F using Tapatalk

It should be connected to a second overflow tank behind the numberplate flap, when the engine warms up the coolant expands and pressurises, some coolant will then go through the dalek cap into the overflow tank and is sucked back when the engine cools. However if it pushes coolant through immediately on starting then that would be a worry.

I tried one of these with the blue liquid that turns green ....what a waste of time, there's so much pressure at the tank it just blows the liquid out.

Sent from my E6853 using Tapatalk

Isn't that for fermenting booze

R0B wrote:Isn't that for fermenting booze

Pmsl, Well it's no good at detecting engine gasses

Sent from my E6853 using Tapatalk

Not having a diesel t25 before I'm struggling a bit trying to suss out what's wrong.......I've been an air cooled man since day 1.
When it starts up loads of light grey smoke come flooding out the exhaust.....
No other diesel I've driven has done that....

Sent from my E6853 using Tapatalk

If the pressure builds quick enough to blow the fluid out of the tester then it will be obvious what's wrong when you take the head off

Sent from my SM-G920F using Tapatalk

vwaddict wrote:Not having a diesel t25 before I'm struggling a bit trying to suss out what's wrong.......I've been an air cooled man since day 1.
When it starts up loads of light grey smoke come flooding out the exhaust.....
No other diesel I've driven has done that....

Sent from my E6853 using Tapatalk

That sounds like timing, try using the cold start and see if it is different that would confirm it.