What is the hose from the air intake to the valve cover called?
This cracked hose connecting the air intake to the valve cover is typically a PCV or crankcase ventilation hose, which is why oil can leak through the crack. Replacing it is often as simple as disconnecting the old one and putting on a new replacement, though proper identification is essential to finding the right part before ordering.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
- 1Trying to guess the part name to search for replacements online
- 2Looking for a local mechanic to handle the diagnosis and repair
- 3replacing the cracked hose and PCV valve
- 4inspecting hoses for oil fouling
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“Been having some engine compression issues on my 2003 Nissan Ad Wagon, QG13 engine and saw this hose has a rupture a lot of oil and I'm trying to find a replacement hose and a mechanic who can deal with this issue for me hopefully.”source ↗
“What's the correct name for this part so I don't look like an idiot when searching please?”source ↗
“For sure. I know there's a seal and compression leak somewhere but it's to get the funds and someone with expertise nearby to diagnose and deal with it currently. The hose itself gave up this morning entirely so vehicle can't move so I'm just making sure I know what exactly I'm asking for when searching for parts.”source ↗
“That oil and leakage issue is substantial but may be beyond my budget right now. :(”source ↗
“Recently noticed an oil consumption problem.”source ↗
“Anyways, I was looking for leaks again, and noticed this hose going from the air intake to the valve cover. It has oil on it, and I noticed a crack in the hose.”source ↗
“My questions are: what hose is it? And if it's an air/vaccuum hose, then why is there oil coming through the crack on the valve cover side? Is this fix really as simple as "disconnect hose, connect new hose"?”source ↗
Where this came up
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