Quote:
Originally Posted by Tanksowner
Define "significant rush of air". I filled my 85 diesel up this morning and when I opened up the cap, I heard a tiny bit of air come out, but it didn't really raise a whole lot of suspicion.
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Define "tiny bit."
The valve in the vent system will allow a slight positive or negative pressure differential, so a slight rush of air (subjectively defined) is not abnormal.