***Question*** Coolant Cap
#1
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
I never noticed the coolant cap had two tiny hoses on it. One of them is real short and connects to nothing. The other day when I refilled my coolant I noticed it but didnt think much of it. Same night after I topped off coolant I notice smoke coming out of my hood. Popped my hood and sure enough there was some coolant that sprayed out of that tiny hose... What gives? the last few nights its been fine, nothing leaking from what I can see. Is this smaller tube just an overflow or outlet tube for spill over?
#6
Pole Position
iTrader: (5)
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
It's to spill out any overflow, and it's very common that the coolant does what yours did. Mine is all crusty from when it spilled out too. There's a few threads on it, I think some people said the dealer has a fix for it but I've never cared enough to look into it. Nothing to worry about if you ask me
![Thumb Up](https://www.clublexus.com/forums/images/smilies/thumbsup.gif)
Trending Topics
#8
Racer
iTrader: (4)
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
It's to spill out any overflow, and it's very common that the coolant does what yours did. Mine is all crusty from when it spilled out too. There's a few threads on it, I think some people said the dealer has a fix for it but I've never cared enough to look into it. Nothing to worry about if you ask me ![Thumb Up](https://www.clublexus.com/forums/images/smilies/thumbsup.gif)
![Thumb Up](https://www.clublexus.com/forums/images/smilies/thumbsup.gif)
![Uhh...](https://www.clublexus.com/forums/images/smilies/1387914497.gif)
#10
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
it's for the overflow...Because your coolant is in your cooling system when then engine is cold, then when it heats up and expands it goes to the reservoir...then when your engine cools back down, the pressure subsides and thus it sucks up the coolant from the reservoir again. But sometimes there is just a little too much on the reservoir that it needs to go somewhere (hence the extra tube)
hope this helps...i just read it again and even i got confused! LOL
hope this helps...i just read it again and even i got confused! LOL
Thread
Thread Starter
Forum
Replies
Last Post