Radiator hose collapsed - why? - Nissan Titan Forum
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#1 Old 11-29-2007, 04:40 PM
Predator
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Radiator hose collapsed - why?

I was looking under my hood today at my dead battery and I noticed that my top Radiator hose was collapsed.

Why does that happen?

Is there anything that needs to be fixed?

thanks

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#2 Old 11-29-2007, 04:43 PM
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There have been a few complaints about that...........can't remember
the outcome

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#3 Old 11-29-2007, 04:43 PM
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This happens often. When the coolant cools it contracts and the vacuum causes the hose to collapse. Really nothing to worry about.
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#4 Old 11-29-2007, 06:32 PM
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The Spot and TT both have several threads on this subject. While no one had reported any problems with the hose collapse, some folks didn't think this was normal and they thought that eventually this would weaken the hose.
Whenever this topic comes up, it is in the Fall when we experience rapid and large temperature extremes.
At any rate, the fix for this has been a new radiator cap, everyone I have read about with this problem replaced their cap and never had the problem again. TS has the best thread on this. Some people also had a new hose made that has thicker sidewalls, as the Nissan hose is rather flimsy.

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#5 Old 11-29-2007, 06:59 PM
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Interesting, I assume this is the upper hose?? Usually the lower ones have the springs inside them, correct???


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#6 Old 11-29-2007, 07:47 PM
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All the pictures I have seen are of the upper hose which I guess makes sense, as it seems to me that the upper hose is the one which has a better chance of losing fluid under a vacuum condition.
I never paid much attention to the bottom hose and don't know if is of a sturdier construction than the top hose.

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#7 Old 11-29-2007, 08:18 PM
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I just had the same problem this past weekend. I was changing my oil and noticed the collapsed hose. I let the pressure off the cap and the hose flexed back to normal. I have not looked at it since then to see if is has done it again. Funny, how a thread on this comes just when I had the same issue!!

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#8 Old 01-04-2008, 06:31 PM
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I had this happen recently, turned on the truck and it fixed itself after a minute. Now for some reason my resevoir is like completely full almost, what would cause this? Is the truck ok to drive right now?
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#9 Old 01-04-2008, 06:34 PM
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This happened to mine too
I bet its more common than everybody thinks, its just that not many people notice this


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#10 Old 01-04-2008, 07:31 PM
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Quote:
Originally Posted by cool65hntr
This happened to mine too
I bet its more common than everybody thinks, its just that not many people notice this
did the level of your overflow tank get extremely high too?
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