Weird substance inside radiator

[lsm1991]

mine was also all rust and gunk when i first got my car... had to flush 5-6 times before it got much clearer (heck even now its slightly brownish)

 

[RENESIS VIII]

That might be dirt coming from your tap water or your hose. Sometimes old hose can contain moss inside it or in the nozzle spray, then when you fill up with that hose it gets into your cooling system.

Yup, DIY just like that only, simple enough right?

But for dirt coming from tap to reach this amount is ridiculous. I just added a little amount of water all these while. Someone told me it could be oil but what oil can it be. My engine oil is not leaking anywhere as far as I know.

Looks simple except the removal of thermostat. But I have heard of an easier method from VR2. He said just remove the hot water return hose from the radiator. Start the car and put the water hose into the radiator to fill it up. Continue letting the hot water flows out from the engine until the water looks clean.

mine was also all rust and gunk when i first got my car... had to flush 5-6 times before it got much clearer (heck even now its slightly brownish)

Did you flush out the water jackets inside the block? Or just the radiator itself?

 

[lsm1991]

But for dirt coming from tap to reach this amount is ridiculous. I just added a little amount of water all these while. Someone told me it could be oil but what oil can it be. My engine oil is not leaking anywhere as far as I know.

Looks simple except the removal of thermostat. But I have heard of an easier method from VR2. He said just remove the hot water return hose from the radiator. Start the car and put the water hose into the radiator to fill it up. Continue letting the hot water flows out from the engine until the water looks clean.



Did you flush out the water jackets inside the block? Or just the radiator itself?

radiator flush was done looong ago by a mechanic
then later on i wanted to flush everything out BUT i kind of did it the lazy way??
basically
1)drain the radiator,
2)fill up,
3)started car (get it warmish)
4)flushed again (get fingers burnt)
56789...)repeated several times on one weekend then repeated everything again a week later just cause i had time....

I only used coolant on the last fill tho... running one week on water 'should' have been alright..
(now i think about it, it might have been a stupid way, removing the thermostat to properly flush everything would have probably been faster)

 

[vr2turbo]

Maybe should do a reflush on the engine itself too. The reflush I did was just on the radiator itself. Din't clean the engine as my mechanic say it will take some time and won't be very cheap. Told me to flush the radiator first and see how it goes.

Din't check the thermostat.

Your mechanic bull shit you loh! Like bro. 6UE5t mentioned can easily DIY. I always do for my VR and Sonata.
Just remove the top hose coming out from the engine to radiator. Start engine and let it run. When warm and thermostat opens water will flow out, just keep filling from radiator cap. Flush until clear clean water comes out. Attached back hose, refill add coolant and you are done.

If want faster water flow remove thermostat like what bro. Izso showed but for me is too much trouble, since my cars are old I also scare break the gasket, so I just let it warm up to open the thermostat....lol

 

[vr2turbo]

But for dirt coming from tap to reach this amount is ridiculous. I just added a little amount of water all these while. Someone told me it could be oil but what oil can it be. My engine oil is not leaking anywhere as far as I know.

Looks simple except the removal of thermostat. But I have heard of an easier method from VR2. He said just remove the hot water return hose from the radiator. Start the car and put the water hose into the radiator to fill it up. Continue letting the hot water flows out from the engine until the water looks clean.

Just saw your post, yup, as I mentioned again above......lol

 

[vr2turbo]

radiator flush was done looong ago by a mechanic
then later on i wanted to flush everything out BUT i kind of did it the lazy way??
basically
1)drain the radiator,
2)fill up,
3)started car (get it warmish)
4)flushed again (get fingers burnt)
56789...)repeated several times on one weekend then repeated everything again a week later just cause i had time....

I only used coolant on the last fill tho... running one week on water 'should' have been alright..
(now i think about it, it might have been a stupid way, removing the thermostat to properly flush everything would have probably been faster)

This way you flush radiator only, then mix clean water with whatever balance in the block. Flushing a few times just this way just thin down the dirt that is in the system and not completely clean.

 

[lsm1991]

This way you flush radiator only, then mix clean water with whatever balance in the block. Flushing a few times just this way just thin down the dirt that is in the system and not completely clean.

yup... its not 100% clean, deswai still brownish(but oddly, radiator cap fluid looks good, only the resevour looks brownish).... but compared to when i got it, bolehlah.... next flush will probably repeat~

 

[RENESIS VIII]

radiator flush was done looong ago by a mechanic
then later on i wanted to flush everything out BUT i kind of did it the lazy way??
basically
1)drain the radiator,
2)fill up,
3)started car (get it warmish)
4)flushed again (get fingers burnt)
56789...)repeated several times on one weekend then repeated everything again a week later just cause i had time....

I only used coolant on the last fill tho... running one week on water 'should' have been alright..
(now i think about it, it might have been a stupid way, removing the thermostat to properly flush everything would have probably been faster)

How is your radiator coolant now? You mentioned that it looks dirty but has it ever caused problems for you like overheating or something?

Your mechanic bull shit you loh! Like bro. 6UE5t mentioned can easily DIY. I always do for my VR and Sonata.
Just remove the top hose coming out from the engine to radiator. Start engine and let it run. When warm and thermostat opens water will flow out, just keep filling from radiator cap. Flush until clear clean water comes out. Attached back hose, refill add coolant and you are done.

If want faster water flow remove thermostat like what bro. Izso showed but for me is too much trouble, since my cars are old I also scare break the gasket, so I just let it warm up to open the thermostat....lol

Okay, will try to do it again if I notice the temperature rise up badly or when I found more of these substances. Your method seems way easier than Izso method.

Just saw your post, yup, as I mentioned again above......lol

I read about it before in your old posts 2 weeks ago while searching for radiator flushing threads.

Just now at 9am, I opened the radiator cap again to see if those dirty substances are around. Surprisingly, everything looks clean and none of them are present even at the cap. I put my finger inside and nothing is dirty at all. This is very weird. It was there yesterday afternoon (when I took the pictures) before I drove 40km back to my house. Yesterday after cooling the engine down at home, those substances are not there either. :hmmmm:

 

[6UE5t]

Yes, I actually did like bro VR2, very simple, but do like bro Izso also good if you want to check your thermostat at once.

 

[lsm1991]

How is your radiator coolant now? You mentioned that it looks dirty but has it ever caused problems for you like overheating or something?

dirty-ish, but nah no issues. Been in jams, kl-cameron highlands and back all no issues... my oil temp maxes out at 95 (which is accordingly alittle low infact) water temp never passes 40+% (in my case over 50% is hot)

now about that stuff.... why not just leave over a weekend then check....

*you asked about opening the cap with the engine running, well there should be no bubbles, you will see the water swirling about one the thermostat opens but be careful... you might notice that the water level rises quite abit as it warms up.

 

[mADmAN]

flush with coke.. my radiator water was super brownish and had some slight gunk in it. after flushing as per link below, and used battery water+coolant as final and til today water is clear. granted the car only moves on weekends and even then not every weekend... but it does get a 10min warmup daily.

http://www.zerotohundred.com/newforums/showthread.php?t=457966&highlight=coke

important note is to NOT use tap water as the final day to day cooling. it can cause rust and gunk.

 

[sweelt]

Wow...need confident. Yup, coke do work as many tried.
My last balls was fix aerocatch hood pin. Sucess tho. lol....

 

[lsm1991]

flush with coke.. my radiator water was super brownish and had some slight gunk in it. after flushing as per link below, and used battery water+coolant as final and til today water is clear. granted the car only moves on weekends and even then not every weekend... but it does get a 10min warmup daily.

http://www.zerotohundred.com/newforums/showthread.php?t=457966&highlight=coke

important note is to NOT use tap water as the final day to day cooling. it can cause rust and gunk.

just curious... how much coke did you dump in??
**aright read the thread... pure coke!

 

[RENESIS VIII]

Yes, I actually did like bro VR2, very simple, but do like bro Izso also good if you want to check your thermostat at once.

Will attempt it if more of these substances came back. For some reason, I cant find traces of it this morning.

dirty-ish, but nah no issues. Been in jams, kl-cameron highlands and back all no issues... my oil temp maxes out at 95 (which is accordingly alittle low infact) water temp never passes 40+% (in my case over 50% is hot)

now about that stuff.... why not just leave over a weekend then check....

*you asked about opening the cap with the engine running, well there should be no bubbles, you will see the water swirling about one the thermostat opens but be careful... you might notice that the water level rises quite abit as it warms up.

Looks like the dirty stuff in your radiator did not affect your radiator performance. Previously mine was dirty and it was okay all these while until now.

You mean leave the car not started up over a weekend and check it again?

flush with coke.. my radiator water was super brownish and had some slight gunk in it. after flushing as per link below, and used battery water+coolant as final and til today water is clear. granted the car only moves on weekends and even then not every weekend... but it does get a 10min warmup daily.

http://www.zerotohundred.com/newforums/showthread.php?t=457966&highlight=coke

important note is to NOT use tap water as the final day to day cooling. it can cause rust and gunk.

It should be fine even with my stock radiator? Mine is not aluminum like yours.

How long did your whole process took?

 

[lsm1991]

Looks like the dirty stuff in your radiator did not affect your radiator performance. Previously mine was dirty and it was okay all these while until now.

You mean leave the car not started up over a weekend and check it again?

yep leave it over a weekend tho dont think there will be a dif...

 

[RENESIS VIII]

yep leave it over a weekend tho dont think there will be a dif...

Okay. I'll see what is the result if I leave it like it is for a few days since I don't get to drive much during weekend at home.

 

[mADmAN]

It should be fine even with my stock radiator? Mine is not aluminum like yours.

How long did your whole process took?

yes should be fine... my friend who did it, did it on his stock wira radiator.

takes 4-5 hours as we tried to get it done as thoroughly as possible while rushing at the same time.... best to put aside a whole day just to be sure.

 

[RENESIS VIII]

yes should be fine... my friend who did it, did it on his stock wira radiator.

takes 4-5 hours as we tried to get it done as thoroughly as possible while rushing at the same time.... best to put aside a whole day just to be sure.

I see. Thanks for the information. I'll use your post as a guideline when I want to attempt it. By the way, battery water can be replaced with distilled water found in supermarkets?

 

[vr2turbo]

yup... its not 100% clean, deswai still brownish(but oddly, radiator cap fluid looks good, only the resevour looks brownish).... but compared to when i got it, bolehlah.... next flush will probably repeat~

Got wash reservoir bottle or not? Take out, put some fine sand into it, fill half with water and shake. Not clean, repeat, thereafter clean/rinse properly then fit back.
Reservoir bottle usually dirty if water got dirt. When hot the water comes in, but when cool it gets suck back, however when cooling time dirt settle to bottom of reservoir bottle, Over time it gets more dirty....lol

 

[vr2turbo]

I see. Thanks for the information. I'll use your post as a guideline when I want to attempt it. By the way, battery water can be replaced with distilled water found in supermarkets?

Your battery not MF? As long is distilled water can use.....