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Unexplained loss of coolant 

 

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 Post subject: Re: Unexplained loss of coolant
Posted: Tue Oct 05, 2010 7:36 pm 
Getting Side Ways
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You dont necesarily need to pressure test a cooling system or compression test the cylinders to find a blown headgasket or split head. If water is going into the cylinder, pull the spark plugs out. You may find that 1 of them is as clean as a whistle while the rest are dirty with carbon etc.
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 Post subject: Re: Unexplained loss of coolant
Posted: Tue Oct 05, 2010 8:24 pm 
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Are you noticeing the level drop when the engine is hot or when its cold

 

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Posted by Xcabbi, Does it slap or rattle? Rattle is more to do with timing chains and tensioners. Slap is more to do with lifters, rings, bearings or GENIII boat anchors

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 Post subject: Re: Unexplained loss of coolant
Posted: Tue Oct 05, 2010 9:55 pm 
Getting Side Ways
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Location: Eagleby
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G'day people.

Thanks for your replies, No, I have not checked under the vehicle to look under the manifold as yet, been raining so will wait until the rain stops a bit otherwise no fun getting wet.

Yes, I though air pocket would have gone by now as Tim stated.

When I looked at the water level this time the engine was hot (warm). I topped the coolant up when it was safe.

I left it overnight and checked whilst cold, could not see any difference in level

Cheers
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 Post subject: Re: Unexplained loss of coolant
Posted: Tue Oct 05, 2010 10:15 pm 
Getting Side Ways
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frd906n wrote:
When the engine is hot the level will raise in the resevoir, when it is cold the level will drop. Keep an eye on it the air should be out of it by now.



Like i qouted above, the level will fluctuate

 

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Quote:
Posted by Xcabbi, Does it slap or rattle? Rattle is more to do with timing chains and tensioners. Slap is more to do with lifters, rings, bearings or GENIII boat anchors

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 Post subject: Re: Unexplained loss of coolant
Posted: Tue Oct 05, 2010 11:33 pm 
Getting Side Ways
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Location: Eagleby
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frd906n wrote:
frd906n wrote:
When the engine is hot the level will raise in the resevoir, when it is cold the level will drop. Keep an eye on it the air should be out of it by now.



Like i qouted above, the level will fluctuate


No worries, I'll keep an eye on it. Thanks
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 Post subject: Re: Unexplained loss of coolant
Posted: Fri Oct 08, 2010 9:47 pm 
Getting Side Ways
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uniacidz wrote:
Check here
ford-4l-and-6-cylinder-f1/oh-no-dreaded-coolant-leak-help-t96358.html

Just happened to me but mine was worse.

Went from Sydney to Port Macquarie bout a month ago and water reserviour was half full. Went in the day time when fractionally warmer.

After refilling came back to Sydney at night whilst raining and no coolant loss.

However just a couple days ago, was losing 1.5 litres overnight. Found to be heater hose which is underneath the BBM manifold.

Off the to mechanics, as dont have time, and replaced all the heater hoses and heater tap and top radiator hose. No more leaks.

Under hot conditions, would spray the water out of the cracked hose, hence coolant/water loss. Mechanic did a pressure test and presto, found the hoses at fault.

Now the hoses were originals, so 13 years old. So bound to need replacing. Went with original motorcraft ones again and as i said all fine.

Not saying that this is your issue, but after a drive, have a look near and under the BBM. Could be the underlying issue and if it is a cracked hose, it will get worse like mine did.

Cheers


G'day. yeah I'll check it as soon as its dry enough to do so, too much rain where I am.
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 Post subject: Re: Unexplained loss of coolant
Posted: Wed Oct 13, 2010 11:00 pm 
Getting Side Ways
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Hello again,

Well looks like I may have solved my loss of coolant problem.

From the beginning.

I installed a new radiator and hoses, but never had the heater unit opened from the first instance so it did take a few days for the coolant to fill the system as air pockets were still evident.

Now that its full. I have noticed I am losing coolant from the surge tank itself.

After driving 5 days, long and short distances I have noticed the green liquid sitting on top of the bottle between the upper and lower joins, also evidence of seepage tracking onto the outside of the main hose leading to the radiator.

I'm going to take the idea what one poster said. i.e. get another surge tank for same make and model and clean it with Hydrochloric Acid, instead of 30 minutes I'm going to do mine for 24 hours, 12 hours both sides and give it a thorough was to remove the acid.

The acid should clean the scale build up inside the bottle to a point where one should be able to see the coolant max and minimum instead of second guessing.

I'll let you know how it pans out.

I'll post photos, before, during and after.

Cheers.
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 Post subject: Re: Unexplained loss of coolant
Posted: Thu Oct 14, 2010 10:07 pm 
Getting Side Ways
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Ok,

I've cleaned my spare coolant / surge tank from the wreckers with Hydrochloric Acid.

I let the Acid soak for about 1 and half hours. Seemed to have cleaned the scale no problems

Here are the photos:-

 

 

Attachments:
File comment: Coolant bottle after Hydrochloric Acid
coolant bottle after acid treatment (Large).JPG
coolant bottle after acid treatment (Large).JPG [ 81.12 KiB | Viewed 48 times ]
File comment: Hydrochloric acid at work
Hydrochloric acid at work (Large).JPG
Hydrochloric acid at work (Large).JPG [ 97.21 KiB | Viewed 58 times ]
File comment: Before Acid treatment
Coolant bottle before acid treatment (Large).JPG
Coolant bottle before acid treatment (Large).JPG [ 82.45 KiB | Viewed 60 times ]
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 Post subject: Re: Unexplained loss of coolant
Posted: Thu Oct 14, 2010 10:42 pm 
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That acid sure did a good job, good way to clean of the gunk in there so it wont go floating around in the system.

 

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 Post subject: Re: Unexplained loss of coolant
Posted: Thu Oct 14, 2010 11:04 pm 
Getting Side Ways
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Age: 58

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Ride: Ford Falcon AU 2000 Series II

Location: Eagleby
QLD, Australia

Yeah, it sure did, bugger of a job though.

Used acid proof gloves, protector eye shield designed for working with acid, no bear feet, and dont breath the fumes, nasty stuff, keep upwind where possible and pleanty of ventilation.

I used full strength acid. I'll be doing another one on saturday and will keep as a spare.

Gaff tape I used to block the holes to stop fluid escaping was not enough, I'll be trying more gaph tape next time and will try to keep acid contained say for 3 hours both sides or longer and see what happens. I might try using an old rubber with cork and clamp to seal it next time.

Cheers
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