Mysterious Coolant Leak Disco II
#1
Mysterious Coolant Leak Disco II
I have been experiencing coolant leak for quite sometime and recently I replaced a few parts. I changed the Thermostat, Coolant Cap, lower and upper hoses, T/B Plate, both hoses that connect to the T/B Plate, Water Pump and Water Pump Gasket. I changed out the Valve Cover Gaskets as well because I noticed leak on the driver side Valve Cover towards the back.
Before all the above replacements, I could visually see the puddle of coolant that was left behind from my Disco. Now, I don't see any leaks on the floor, nor do I see leaks anywhere. I do here gurgling noise from my dash and I have bled my cooling system. I had the coolant tank slightly tilted as I filled the coolant and then released the bleed screw until coolant started steadily flowing through. I had the engine on will performing this process. I have also squeezed all the hoses to make sure there was coolant running through. I believe I did it right, but again, I am still green at this whole fixing car thing. I am at a lost right now. I hope this is not a Head Gasket issue.
Does anyone have other remedies or suggestions that could resolve this issue? Or do I just live with it and fill the tank up with coolant when it gets low.
Before all the above replacements, I could visually see the puddle of coolant that was left behind from my Disco. Now, I don't see any leaks on the floor, nor do I see leaks anywhere. I do here gurgling noise from my dash and I have bled my cooling system. I had the coolant tank slightly tilted as I filled the coolant and then released the bleed screw until coolant started steadily flowing through. I had the engine on will performing this process. I have also squeezed all the hoses to make sure there was coolant running through. I believe I did it right, but again, I am still green at this whole fixing car thing. I am at a lost right now. I hope this is not a Head Gasket issue.
Does anyone have other remedies or suggestions that could resolve this issue? Or do I just live with it and fill the tank up with coolant when it gets low.
Last edited by DiscoHan; 09-12-2014 at 05:07 PM.
#2
Wrong bleed procedure...
First start with the engine stone cold... not running.
Take the overflow tank completely out and raise it up as high as the bottom hose will allow it to go.
Then fill through the overflow tank until a steady stream comes out the bleed screw. Now refit the bleed screw before dropping the tank back in its place.
Reseat the tank, put cap on, drive and run the heat on high for a bit.
If after this you still hear water under the dash wait and repeat again when engine is stone cold.
First start with the engine stone cold... not running.
Take the overflow tank completely out and raise it up as high as the bottom hose will allow it to go.
Then fill through the overflow tank until a steady stream comes out the bleed screw. Now refit the bleed screw before dropping the tank back in its place.
Reseat the tank, put cap on, drive and run the heat on high for a bit.
If after this you still hear water under the dash wait and repeat again when engine is stone cold.
#3
So are you losing coolant or just getting the waterfall sound behind the dash?
The waterfall sound is just air in the system. Bleed the system the way the member above ^^ talked about, Engine off.
Here is the full refill procedure from the RAVE:Cooling System- Drain and Refill.pdf
The waterfall sound is just air in the system. Bleed the system the way the member above ^^ talked about, Engine off.
Here is the full refill procedure from the RAVE:Cooling System- Drain and Refill.pdf
#6
#7
headgaskets.
coolant is going into a cylinder
ruins the cats too
and out he tailpipe
Happened to me.
See here
http://jeffreyfall.com/landrover
coolant is going into a cylinder
ruins the cats too
and out he tailpipe
Happened to me.
See here
http://jeffreyfall.com/landrover
#8
I wouldn't go freaking out just yet. It sounds as if you changed out quite a few parts that would require you bleeding the system. If the system wasn't bled all of the way you will hear the waterfall sound behind the dash indicating air pockets in your system. This is what happened to me after I dealt with numerous coolant issues, more precisely, the throttle body heater gasket replacement. Thought the system was bled correctly, had a huge drop in coolant over the next 2 days and then topped it up again. How often are you checking it? How often are you seeing it lose coolant? Makes sense to me that if you fixed the leaking problem and you're not noticing the puddles on the floor, a reasonable explanation would be air pockets in your coolant system. Good luck and keep us posted.
#9
rent or borrow a cooling tester, pump your system up to 18 psi while wiggling and pulling on every hose. im guessing you wont even get close to 18, if so you have a leak.
if after 20 minutes you still are holding 18 psi, loosen the upper heater hose clamp on the heater core and vent any trapped air from there.
if after 20 minutes you still are holding 18 psi, loosen the upper heater hose clamp on the heater core and vent any trapped air from there.
#10
I wouldn't go freaking out just yet. It sounds as if you changed out quite a few parts that would require you bleeding the system. If the system wasn't bled all of the way you will hear the waterfall sound behind the dash indicating air pockets in your system. This is what happened to me after I dealt with numerous coolant issues, more precisely, the throttle body heater gasket replacement. Thought the system was bled correctly, had a huge drop in coolant over the next 2 days and then topped it up again. How often are you checking it? How often are you seeing it lose coolant? Makes sense to me that if you fixed the leaking problem and you're not noticing the puddles on the floor, a reasonable explanation would be air pockets in your coolant system. Good luck and keep us posted.