Question about 1990 Nissan 300ZX

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My raditor has rust in it or a brown type of water in it how do i get rid of this

How do I flush it all out

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The eradicator has what is called a PIT , a small thumb twisting nut on the bottom of the housing. With a pair of pliers, turn it until water flows freely. Open the cap of course to allow air to enter the chamber. Leave it PC valve open and flush until clear water comes out. Close the PC, after all water is emptied out and fill accordingly, remember antifrees solution for protection and rust prevention.

Posted on Mar 25, 2014

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Posted on Jan 02, 2017

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Why is my coolant brown


The brown is rust. They did a poor job of flushing. It needs to be flushed with a good acid cleaner. If there are no leaks and it is cooling ok, it will not hurt to run with the brown anti-freeze.

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drain the radiator and completely flush the system. use a quality flush system from the auto parts store. after system is flushed so it only flows clean water after draining a few times then empty system and refill with 50/50 antifreeze /water and make sure system is cycled through 5-6 time to make sure air is purged from the system

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Chrysler sebring 01 overheats very quickly. I have replaced radiator, thermostat. It ran fine for about a week. Overheated again. Did a radiator flush due to rust in radiator. I was having to put water...


If your having to put that much water in it I would lean towards a bad head gasket your other symptoms would make me think possible water pump. I'd check them both 1 of the 2 is most likely the prob or possiobly both. Good luck.

Oct 31, 2012 | Cars & Trucks

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I'm trying to perform a radiator drain (flush) on my 1999 Buick Century Limited. I need to know how.


drain raditor fluid then take off upper and lower hoses and put your house water hose in lower raditor hose and turn on water and let run for about 5 mins. to flush out raditor.
then run in top hose to flush back then lower hose again. that should clean it out.

Feb 22, 2011 | 1999 Buick Century

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I noticed that when i put anti freeze and water in their is this brown milky stuff


the brown milky stuff is rust and you have mixed two different types of antifreeze together it formed a reaction,you will need to do a complete flush and top up with the correct antifreeze for your engine asap.DO NOT MIX ETHYLENE GLYCOL WITH ANY OTHER TYPE OF ANTIFREEZE..........

Jun 25, 2010 | 1999 Ford Taurus

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Replaced radiator on 2001 mazda millenia. now i see the water in the over flow tank is oily and brown in color.


mcdevito75 here, Sounds like you need the cooling system flushed at a radiator shop, the new radiator insatlled is bringing all the dirt from the engine to the recovery container, the brown your seeing is a bit of rust. Have the cooling system flushed at a radiator shop.

Jun 18, 2010 | 2001 Mazda Millenia

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I have replaced raditor cap and flushed and cleaned coolant overflow tank. I top off overflow tank and raditor and drive for a bit check raditor level and it is down . Some times I add almost a quat of...


could be a head gasket (coolant going into exhaust or into oil) pull oil dipstick does it look light brown like the color of a chcolale milkshake if yes u have bad head gasket does exhaust blow white smoke? if yes bad headgasket ? pull radiitor cap off let van run for while does water come out of raditor at a fast rate if yes (possiable ) bad head gasket
also could have leak your not seing look closely around where intake meets heads notice any water trails or see any water leaking ? if yes bad intake gaskets look closely around water pump any trails of water there ? if so bad water pump also check closely around seams of raditor for water trails
after all this u dont see any thing might need to take it to a shop and have it pressure tested (some leaks will only show up under pressure) most shops won' t charge much if anything for this service

Jun 11, 2010 | 2002 Dodge Grand Caravan

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When I'm stopping and the car is on. The temperature when up


Sounds like the raditor fan has stopped working. Cheak to see that it does and if it does then wash the raditor with soap and water trying to blow water though from the engine side out the front as maybe ait can't get though cause of bugs or dirt. after that the raditor can be flushed if it's not too dirty but modern raditors if not flushed before you have troble need to be replaced as they don't flush well after they stop up.

May 21, 2010 | 1999 Acura TL

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I have an 2001 Mercedes-Benz c240...What color should the coolant be that is used in this car. I paid to have it flushed but the coolant in it looks a greenish-brown color...is this right? Not sure they...


Hi. apparently the mechanic did not rinse the contents out completely after the flushing was administered. During the flushing of a radiator, there may be a good amount of debris that will build up, due to the flushing compounds effect on the crude inside the radiator. This is why there should be a rinsing stage to clean out all that is removed, via the flushing procedure. If the rinse is not done correctly, some of the contaminates will be left behind to mix in with the new radiator fluid. The rust/debris will mix contaminate the new fluid that is poured in, thus, causing the brown color you have noticed.

Most radiator fluids will be green, or orange in color, but never brown or greenish brown. This greenish brown will indicate that there is some rust deposited that were not rinsed out properly, after the flushing of the radiator. I would return the vehicle to the mechanic to request a re-flush of the radiator. They should do it for free.


NOTE_ A more serious issue will be a damaged oil cooler. this will cause the same symptoms within the color of the fluid, if your vehicle is equipped with this device. Once the oil cooler has ruptured, it will cause the engine oil to be transfer into the radiator, thus, changing the color of the fluid.

Dec 03, 2009 | Mercedes-Benz C-Class Cars & Trucks

2 Answers

RADIATOR IS RUSTED!


a radiator flush chemical may be a bad idea if the radiator is rusted up inside.drain out as much as you can, fill with distilled water only, then idle the car till it is at full operating temp. then drain the water and do the same thing one more time. after that, fill with your 50-50 mix of antifreeze/water and that will be about as clean as you can safely get it.

May 30, 2009 | 1992 Nissan 300ZX

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