Coolant leak from drain plug?

radiod

Supramania Contributor
Dec 13, 2007
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I'm 99% sure that's where it's coming from, just a couple tiny drops landing almost directly under the tube from the rad drain. Is this common? Should I just drain, put some sort of sealer on the threads of the plug, and put it all back together or get a replacement plug?
 

jetjock

creepy-ass cracka
Jul 11, 2005
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Depends on the plug. Some have an O ring while some have tapered sealing surfaces that can be polished out. No way to know without having a look. Assuming it's really the plug and not the rad itself it should be easy to fix though...
 

radiod

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Dec 13, 2007
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Reason I'm assuming the plug at this point is because it is wet at the bottom of the drain tube but I haven't noticed any wetness on the outside of it. It's a stock toyota rad, so if I were to be a guessing person the plug would be the same as well. I guess I'll start with just trying to reseal the plug, whether that be an O-ring or using some sealant of some sorts and see where it goes from there.

What would you recommend using on the threads? First thoughts I had was just some teflon tape, but would that get all messed up with the heat?
 
Oct 11, 2005
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If its a stock Toyota rad then it will be an o-ring seal. I've seen the plug itself crack since it is made of plastic. Best bet is to pull it out and inspect. O-ring and plug are a cheap fix.
 

radiod

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Dec 13, 2007
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If the plug itself is cheap I may as well just get a new one. No harm in even having a spare if the one I have just needs an O-ring.
 

iwannadie

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Jul 28, 2006
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radiod;1589907 said:
Who needed that drain plug anyway? Just pop off the lower hose if you want to drain, right?

I use the drain plug, drops the coolant right into a bucket and doesn't spill a drop doing it that way.