Circling back to my original question - is there anything else that can cause the N80 to fail to open enough? Certainly, if the N80 (or the hoses to or from it) are clogged, one would expect it to perform poorly. But my N80 is brand new and the hoses are clear.
I've read some posts mentioning that failing Oxygen sensors can cause the N80 to malfunction and not throw a CEL, but I'm wondering if this is rumor or there's actual science behind it?
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On Feb 17, 2023, at 6:45 PM, Duane <txpigeon@...> wrote:
On Fri, Feb 17, 2023 at 08:29 PM, FlashVan wrote:
when I opened the gas cap it began to ¡°boil¡± and gas actually spewed out of the filler tube That's a common sign that the N-80 valve (or related tubing) isn't working. The whole purpose of the valve is to allow the fumes to be sucked into the engine to be burned after the engine warms up.
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Duane
05HD Rialta
220K Miles
