Urgent

Wayne B · 6th February 2013, 12:11

I noticed the water level in my radiator was a bit low, so I decided to top it from a hose pipe. After driving home from brothers workshop I noticed the engine starting to get rather hot. Could this be caused by an air lock in the system. If so, how do I get the air out.

Regards,

Wayne.

Dominic22 · 6th February 2013, 12:27

Sounds like the thermostat could be a likely cause. If you take the engine cover off, shine a light in he V of the engine and see if you can see pink staining where the coolant would be leaking.

It might be an airlock but the losing water would likely be the thermostat on a V6. If not the cap might need the seals changing but check thermostat first.

Wayne B · 6th February 2013, 12:51

Ok, thanks for reply. I will take the cover off & check but it was running fine before I topped up the water. If the the thermostat is leaking then its a job that I will have to do.

I also noticed that there was no hot air coming from the heater.

Wayne.

SD1too · 6th February 2013, 12:56

Quote:

Originally Posted by Wayne B

I noticed the water level in my radiator was a bit low ... I noticed the engine starting to get rather hot.

Wayne,

We need more information.

Can you explain what "a bit low" means? Could you see the 'Min' marker inside the expansion tank? Was the tank empty? How much water did you add?

How did you know that the engine was hot? What was the temperature gauge reading? Did you look at the digital coolant temperature display? Was the radiator fan running?

Finally, has any work been done on your cooling system recently?

Simon

Wayne B · 6th February 2013, 13:05

Hi Simon,

I looked in the tank & couldn't see any water. I topped up with seemed like a couple of pints from a hose pipe.

The temperature gauge started to go up & when I got home I noticed a bit of steam coming from under the bonnet. I took a look & could hear what sounded like the water boiling in the bottom of the radiator & the fan was running

I eventually took the cap off & started the engine again & it sounded as if the tank was trying to spit the water back out, that's why I asked about the air block.

Wayne

SD1too · 6th February 2013, 14:15

That's a lot of coolant to have lost. You need to look for the source of the leak first. There's not much point in bleeding the system if air can re-enter via a leak. As has been said already, remove the engine cover and shine a torch into the 'V' to look for pink powdery deposits.

Simon

Singvogel · 6th February 2013, 15:37

I don't know when you added the signature line about Stirling Moss - but I saw the TV programme too.

What a garage full of wonderful machines he has.

I'm jealous.

Singvogel.

Wayne B · 6th February 2013, 15:59

Simon,

I'll take the cover off tomorrow & report back to you with the findings, but could an air block have caused my symptoms after I topped up with water.

Wayne

6th February 2013, 12:11	#1
Wayne B Loves to post MGZT Join Date: Oct 2011 Location: Havant Posts: 312 Thanks: 10 Thanked 2 Times in 2 Posts	Urgent I noticed the water level in my radiator was a bit low, so I decided to top it from a hose pipe. After driving home from brothers workshop I noticed the engine starting to get rather hot. Could this be caused by an air lock in the system. If so, how do I get the air out. Regards, Wayne.

6th February 2013, 13:05	#5
Wayne B Loves to post MGZT Join Date: Oct 2011 Location: Havant Posts: 312 Thanks: 10 Thanked 2 Times in 2 Posts	Hi Simon, I looked in the tank & couldn't see any water. I topped up with seemed like a couple of pints from a hose pipe. The temperature gauge started to go up & when I got home I noticed a bit of steam coming from under the bonnet. I took a look & could hear what sounded like the water boiling in the bottom of the radiator & the fan was running I eventually took the cap off & started the engine again & it sounded as if the tank was trying to spit the water back out, that's why I asked about the air block. Wayne Last edited by Wayne B; 6th February 2013 at 13:10..

6th February 2013, 14:15	#6
SD1too Doesn't do things by halves Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007 Location: Former Middlesex Posts: 20,457 Thanks: 1,587 Thanked 3,749 Times in 3,181 Posts	That's a lot of coolant to have lost. You need to look for the source of the leak first. There's not much point in bleeding the system if air can re-enter via a leak. As has been said already, remove the engine cover and shine a torch into the 'V' to look for pink powdery deposits. Simon __________________ "Whatever is rightly done, however humble, is noble." Sir Henry Royce.

6th February 2013, 15:59	#8
Wayne B Loves to post MGZT Join Date: Oct 2011 Location: Havant Posts: 312 Thanks: 10 Thanked 2 Times in 2 Posts	Simon, I'll take the cover off tomorrow & report back to you with the findings, but could an air block have caused my symptoms after I topped up with water. Wayne Last edited by Wayne B; 6th February 2013 at 16:35..

6th February 2013, 12:27	#2
Dominic22 Posted a thing or two Rover 75 V8 Plus Others Join Date: Jul 2011 Location: Swadlincote Posts: 1,603 Thanks: 18 Thanked 163 Times in 81 Posts	Sounds like the thermostat could be a likely cause. If you take the engine cover off, shine a light in he V of the engine and see if you can see pink staining where the coolant would be leaking. It might be an airlock but the losing water would likely be the thermostat on a V6. If not the cap might need the seals changing but check thermostat first.

6th February 2013, 12:51	#3
Wayne B Loves to post MGZT Join Date: Oct 2011 Location: Havant Posts: 312 Thanks: 10 Thanked 2 Times in 2 Posts	Ok, thanks for reply. I will take the cover off & check but it was running fine before I topped up the water. If the the thermostat is leaking then its a job that I will have to do. I also noticed that there was no hot air coming from the heater. Wayne.

6th February 2013, 15:37	#7
Singvogel Gets stuck in 75 CDT, 1966 2000TC P6, TD4-M47 Join Date: Oct 2011 Location: Deepest darkest Aberdeenshire Posts: 626 Thanks: 0 Thanked 3 Times in 3 Posts	I don't know when you added the signature line about Stirling Moss - but I saw the TV programme too. What a garage full of wonderful machines he has. I'm jealous. Singvogel.