Coolant tank cleaning

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LeeW
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Coolant tank cleaning

Post by LeeW » Sun Feb 21, 2021 11:50 am

Has anyone tried internally cleaning a coolant tank??

I need to sort a coolant leak on mine and thinking about doing (another :roll: ) full flush and maybe jazzing up the hoses with red ones whilst I'm doing it. I have the common tank sensor fault on mine and 1: want to have it working again, 2: want a nice clean looking tank if I'm trying to tidy up the engine bay and 3: don't want to do the easy but expensive thing of spending £140 on a new one.

Thought it might be worth getting a working, used one for £25/30 off eBay and giving it some sort of chemical bath that I've seen on YouTube to get a clean, working one for 75% less expense...

But my initial gut feeling is the chemicals required to clean a tank might also further damage an ageing float...?

Anyone with experience or guidance?
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SmuttyHutty (Sun Feb 21, 2021 2:50 pm)
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Re: Coolant tank cleaning

Post by mi60o0 » Sun Feb 21, 2021 12:16 pm

Go to jdm planet and order one jdm planet is website takes about 6weeksbto arrive is my second I order from there price is good and is genuine with sensor brand sparing new
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Re: Coolant tank cleaning

Post by Delanor » Sun Feb 21, 2021 12:30 pm

Seek and Ye shall find Coolant tank everything you wanted to know

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Re: Coolant tank cleaning

Post by LeeW » Sun Feb 21, 2021 12:36 pm

Delanor wrote:
Sun Feb 21, 2021 12:30 pm
Seek and Ye shall find Coolant tank everything you wanted to know

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Del.
I did indeed seek and find this already.

The link is mislabelled as 'everything I want to know'. I would like to know about the whether cleaning chemicals or procedures will accelerate the "pumice" effect of the coolant tank and this thread doesn't cover that.

Thanks for the help though. I know people get annoyed on here when people post new threads about stuff that's clearly covered in other threads. I do often try and do my research first.
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Re: Coolant tank cleaning

Post by Delanor » Sun Feb 21, 2021 1:00 pm

Who is annoyed?

What would be the point of cleaning the tank the float fails and you cannot access it the "Pumice" type material refers to the float which "had " a coating which wears off so cleaning is not going to replace that and make the float buoyant again is it.

The crud in water tanks tend to be mainly from Limescale so try anything that will remove that.

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Re: Coolant tank cleaning

Post by nightfire10 » Sun Feb 21, 2021 1:04 pm

Delanor wrote:Who is annoyed?

What would be the point of cleaning the tank the float fails and you cannot access it the "Pumice" type material refers to the float which "had " a coating which wears off so cleaning is not going to replace that and make the float buoyant again is it.

The crud in water tanks tend to be mainly from Limescale so try anything that will remove that.

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Del.
Think he just wanted to clean it inside so it looks nice under the bonnet Del some are dirty inside Image

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Re: Coolant tank cleaning

Post by LeeW » Sun Feb 21, 2021 1:14 pm

Delanor wrote:
Sun Feb 21, 2021 1:00 pm
Who is annoyed?

What would be the point of cleaning the tank the float fails and you cannot access it the "Pumice" type material refers to the float which "had " a coating which wears off so cleaning is not going to replace that and make the float buoyant again is it.

The crud in water tanks tend to be mainly from Limescale so try anything that will remove that.

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Del.
I’m not referring to anyone specifically being annoyed. But there’s plenty of cases on this forum (and rightly so sometimes) that people get bored of answering the same questions time and again because people don’t use the search function.

The point of cleaning the tank is so it looks nicer than a brown one and could potentially be far cheaper than simply buying a new one. I know the float fails and why. I never suggested that I was trying to fix it. I was simply asking any advice on whether I would be wasting my time in cleaning a used, working unit with chemicals or otherwise.

The kind of responses I was expecting was;
- Don’t do it, you’ll ruin a float that works and be back at square one.
- do it, I’ve done the same using x method and the float still works y amount of years later.
- don’t know, no ones every bothered trying, they just buy a new one.
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Re: Coolant tank cleaning

Post by ChrisHolmes » Sun Feb 21, 2021 1:19 pm

I think your last expected potential reply is probably correct. My tank look horrible so I masked off the level indicator area and simply painted the rest of the tank.
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Re: Coolant tank cleaning

Post by SmuttyHutty » Sun Feb 21, 2021 2:50 pm

Hi Lee

I did exactly what you're thinking about:

viewtopic.php?f=30&t=82590&p=1287508&hi ... t#p1287508

Clearly it is a punt because the tank I bought off ebay for a few quid could well have had the same float problem that we all know about. But for a total outlay of about £15-20 including the recommended cleaning fluid I felt it was worth it.

And it has worked perfectly.

I didn't think about taking before and after pics at the time because I was not a club member then. But I picked what looked like the cleanest one on ebay (which was still pretty brown on the inside) and set to work.

If either of mine fail again in the future I'll just get back on to ebay....
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Re: Coolant tank cleaning

Post by LeeW » Sun Feb 21, 2021 2:59 pm

SmuttyHutty wrote:
Sun Feb 21, 2021 2:50 pm
Hi Lee

I did exactly what you're thinking about:

viewtopic.php?f=30&t=82590&p=1287508&hi ... t#p1287508

Clearly it is a punt because the tank I bought off ebay for a few quid could well have had the same float problem that we all know about. But for a total outlay of about £15-20 including the recommended cleaning fluid I felt it was worth it.

And it has worked perfectly.

I didn't think about taking before and after pics at the time because I was not a club member then. But I picked what looked like the cleanest one on ebay (which was still pretty brown on the inside) and set to work.

If either of mine fail again in the future I'll just get back on to ebay....
Cheers. How well did it come up? Like fresh, white plastic or just considerably better?

I’m now leaning towards what Mihall said and maybe just getting a new one from japan. It works out at about £70 delivered for a new one, not double that of a uk supplier. Might be worth the slight extra, then I’m not playing the eBay lottery like you said, one which may only last 100more miles!

Unless yours came up pretty mint..... then I suppose it would be worth a try. That would certainly get the issue sorted quicker than waiting for long delivery times!
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Re: Coolant tank cleaning

Post by Delanor » Sun Feb 21, 2021 3:08 pm

Just as a point of interest Mazda changed the float assembly so in theory it shouldn`t happen again, my first tank lasted under 3 years and 11k miles replaced with a modified tank under warranty 10 years ago.

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Re: Coolant tank cleaning

Post by SmuttyHutty » Sun Feb 21, 2021 3:09 pm

Just been out to the cars and got some snaps for you. The expansion tank on the PZ is, I believe, the original. The replacement tank on the 192 has been in situ for 3-4k miles.

Judge for yourself how well it has come up. It isn't shiny white like Richard Hammond's teeth, but it is fine as far as I am concerned.

192 far:
192 far.jpg
192 close:
192 close.jpg
PZ far:
PZ far.jpg
PZ close:
PZ close.jpg

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