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Fuel Cap

Should fuel cap on 2008 Allure with C9 engine be vented or unvented?

Re: Fuel Cap

Reply #1
The cap is unvented. The tank is vented.
George in Birmingham
2003 Magna 6298

Re: Fuel Cap

Reply #2
I’ve noticed I can hear my tank expand when I loosen the cap. Is there an access to the tank vent? I’m wondering if mine is clogged. Any issues if I installed a vented cap? I did notice my cap says “vacuum only”