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Discussion Starter · #1 ·
Hi...just needed help with my 206, i drove to university today and parked up, and when i switched the engine off..i could still hear a noise from the bonnet. so i opened the bonnet up to check what it could be and checked the engine oil, which seemed fine, then i checked the water however that was still at the level it was when i topped it up, and has gone all mucky.

if anyone could help me out as to why it was making this fan kind of noise, i would be grateful!
 

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Hi, and welcome to the forum.

If your car was hot when you parked, it is normal for the electric fan to stay on and cool the radiator, as the switch for it is temperature controlled, and will work without the ignition on.

If your water has gone rusty - naughty you for not using a good antifreeze/ corrosion inhibitor when you top up. It would be a good idea to drain your system (take bottom hose off radiator is easiest), Flush through with a hose, then refill with a quality antifreeze. I like to use glycol based ones - as they leak less, but it's up to you.
Remember there will be some water still in the engine when you work out quantities, buy a hydrometer if you want to do things properly, but a guess should be good enough untill you can get it checked.
Remember to let the air out of the system later.

It could also have Rad Weld in it - as this looks like rust too, and is used to seal minor leaks.

If your water has oil in it - this is bad :mad: And will be needing a new head gasket.
 

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Discussion Starter · #3 ·
Hi, thanks for your help...but im totally new with this car stuff, i think you may be right about "good idea to drain your system (take bottom hose off radiator is easiest), Flush through with a hose, then refill with a quality antifreeze."

if you could talk me how to do that...i would be grateful
 

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Ok I'll try and talk you through it. I usually wear leather gloves.

First it's a good idea to measure the bottom hose size, and buy a new clip for it - just incase the old one is rusted. They're only cheap.
Buy enough antifreeze concentrate to mix up for your engine. It will need between 1 and 5L. Check the back carefully - most are alcohol based. Look for "contains Ethyline Glycol", 'Glycol based', or 'contains glycol' on the label.
When topping up - don't mix types. t's not dangerous, just you can't test the concentration anymore.

I suppose thesedays you should dispose of antifreeze mix safely, but emptying down main (toilet) drains should be acceptable if you cannot find facilities. It will be about as toxic as bad wine.

Draining & Flushing system -
Run engine for 2 minutes to stirr things up - but not to get hot.
Remove bottom clip with standard pliars if it's the spring type. Slide it further up the hose.
Twist hose and wiggle to remove it - try to catch what you can in an old bowl.

When empty - remove the bowl and flush through with garden hose.
If you can take the top hose off as well - all the better. Remove cap of header tank, and flush out from all directions in all pipes. Try to keep your ECU and Battery dry .

To refill -
Remove hose clamp if rusty, and fit a new one, then push on the hoses, and clamp - but not too tight.
Check all hoses are secure again.

I usually add 1ltr of Antifreeze neat into the header tank, then top up with the right concentration mix. This usually ends up slightly better than the minimum overall.

When full up to level - undo the bleedscrew on the heater hose. This will be where the black hoses head into the car bulkhead. Air, then water will come out.
You will probably have to do this a few times over a few days to remove all the air.

Run the car for 2 minutes, then bleed air again+ top up.

Get % antifreeze checked at a local garage to make sure you got it right.
 
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