Thread: Blown coolant hose, 95 Disco V8

the reason the cap pressurises the cooling system, is it raises the boiling point of the coolant. Water will rise from about 100 to 115 degrees, and with a good mix of coolant it will raise again to about 125 - 130 degrees. The normal operating temp of the motor is over 100 degrees in the coolant.

Anyway, it's good that you made it home at least.

Yeah, I know. I was tossing up between pressurising the non standard hose, blowing it and being really stuck, or leave the system open to unload the hose, but boiling off the water.

In the end, I got jack of stopping to top up water...

Pray for my alloy block engine

hi pro

don't think you have done too much damage to engine but that hose has been a problem for me too I found out you can get the same hose 3/4 - 7/8(its a heater hose only longer) from supercheap or any parts supplier for a EF falcon 4.0 litre engine I kept one as a spare after my wife destroyed an engine in my D1 18 months ago every expensive lessen

I'm thinking I should get a wreck and start rebuilding an engine. Nice High compression one for gas

Originally Posted by procrastination inc

All started ok, no odd noises or leaks off we go.


Now for the questions

I am worried about engine damage. I thought I caught it pretty quick, but the TICK TICK TICK has me worried. What do I need to watch out for?

G`day ,

only suggesting and not questions to answer but to ask yourself .

Tick tick was coz the oil got hotter/thinner than it liked which of coarse means so did the engine ? Or the thinning of the oil is just showing your lifters/cam have some wear ?

It would probably pay to go over the engine and nip up anything with a gasket under it or wait and see if new leaks occur .


When you changed over to petrol , more so if it was under load , at some time only short time but neither fuel is flowing and a lean condition occurs . If it`s already hot that leaning makes it hotter still .

Since it seems like you saw when the hose blew , next to consider is why .
It was just the extra load on the engine which raised the coolant temp enough to find the weakest point ?

How old was the hose and why didn`t the cap release the pressure at the prescribed 15 or so psi ?

When a head gasket starts to leak it will normally do it or is noticed that it is doing it when under load like towing or just climbing .

Gauge rises as does the pressure in the coolant system .

These engines because of their design don`t show with oil in water or water in oil as is the norm with head and/or gasket problems and they don`t crack heads because of their design if standard .

So i`d suggest if the gauge starts to sit higher than normal , see if you have pressure and/or bubbles in the system .

If nothing out of the ordinary happens , replace the hoses and forget it happened ( if you can )

Cheers

I doubt you have done any damage at all.
It was all too quick.
What does surprise me is the temperature gauge!

My Disco never moves any further than one third up the dial and I tow a Caravan with it. Many big hills are taken in lower gears nut I never push it beyound 3,500 RPM.
Most times we have the air con on, so the front electric fans are working, although on steep hills I can hear the large engine fan cut in. It makes a hell of a roar.

Just wondering if your fan hub is working?

Thanks for the replys

.....Tick tick was coz the oil got hotter/thinner than it liked which of coarse means so did the engine ? Or the thinning of the oil is just showing your lifters/cam have some wear ?...

Maybe, I think I like that answer.

It would probably pay to go over the engine and nip up anything with a gasket under it or wait and see if new leaks occur ....

I'd better wash it again too, I'd struggle to spot much


When you changed over to petrol , more so if it was under load , at some time only short time but neither fuel is flowing and a lean condition occurs . If it`s already hot that leaning makes it hotter still....

I always switch over with accelerator all the way off.

Since it seems like you saw when the hose blew , next to consider is why .
It was just the extra load on the engine which raised the coolant temp enough to find the weakest point ?...

My guess, oldest hose. All the heater hoses bar this one had been changed when the gas went on. Lower radiator hose is after market. Had it blown before and the motor has suffered in the past?

why didn`t the cap release the pressure at the prescribed 15 or so psi ?

Dunno maybe it popped at less than the cap pressure? It was pretty soft

My Disco never moves any further than one third up the dial and I tow a Caravan with it. Many big hills are taken in lower gears nut I never push it beyound 3,500 RPM.
Most times we have the air con on, so the front electric fans are working, although on steep hills I can hear the large engine fan cut in. It makes a hell of a roar.

Just wondering if your fan hub is working?

How do I check that?

I wonder if I might be a bit lean on gas?

As for the fan hub, when you start your car in the morning, does the fan roar for a minute or so and then stop?

That is what it do if they were quite warm when switched off the night or day before. The noise the fan makes when the bi-metal switch activates, is the same.

If you get none of that, you may well have a faulty viscous hub.

Cheers,
Ron