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Heater Core Flush?

14398 Views 14 Replies 5 Participants Last post by  Clint
Hey everyone. This is my first real post and pretty much why I joined. I'm hoping for some good advice as I keep my '07 Frontier for at least a few more years (cross fingers). Anyway, here is my issue.

Recently I started noticing the scent of anti-freeze. After checking things out, I discovered a leak around one of the heater core hoses (see pics). I don't have anything leaking in the interior of the truck. It appears to just be from that hose. So, a couple of questions:

1) Is it possible just flushing the heater core could fix my problem?

2) What exactly is that plastic connector that the rubber line is going into and the metal pipe going off to the right?

3) if that plastic part is some sort of valve, could it be blocked or malfunctioning and need to be replaced (instead of an issue with the heater core)?



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I replaced that on my pathfinder when I like the other poster bumped into it. Fortunately my dealer keeps them in stock. None of my Frontiers had them fail.
Do it now while it's not a completely failed part.

Good to know you fixed it and didn't leave us hanging. What did you think of those pre-loaded hose clamps, squeeze and they snap in place.
Don't hesitate on the radiator, my Pathfinder was good one day and trans trashed the next day.

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