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960 Gas cap hisses when opening

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mydamnvolvo
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960 Gas cap hisses when opening

Post by mydamnvolvo » Wed Oct 05, 2016 1:50 pm

Hello Everyone!
So, after all of summer of this occurring, my idiot husband decides to tell me that, every time he goes to get gas, and unscrews the fuel cap, he hears a hissing, like pressure being released. Now, I do have an incorrect gas cap on the tank, but I kept trying ones from my stockpile until one did not set off the check engine light. But, he went to fill up today and, it being rather chilly in NY, he said the hissing was faint, like it would be on any car. Does anyone know if this is normal? It never happened to me when I drove it.
Current:
00 V70 (Daily)
01 V70 (Trips)
94 300zx (High School Present)
01 V70 (Hub)
08 GranCher (Daught)
01 740iL
09 C40 (Son)
Former:
93 BMW 525i-Daugh's-Seized
02 Chrysler T & C-Kid Hauler-Fire
72 Buick GSX-Dad's-Corroded
76 Golf GTI-Mom's-Died
97 960-1st-Timing

lummert
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Re: 960 Gas cap hisses when opening

Post by lummert » Wed Oct 05, 2016 8:49 pm

EVAP system issue.
1988 Volvo 760 Turbo Wagon

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mydamnvolvo
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Re: 960 Gas cap hisses when opening

Post by mydamnvolvo » Thu Oct 13, 2016 1:13 pm

lummert wrote:EVAP system issue.
I have no check engine light, and as I get down to a quarter of a tank of gas, the car starts to smell of raw gasoline. Do I need a ventilated fuel cap? Or is it just a small leak which I'll make worse if I try to fix it?
Current:
00 V70 (Daily)
01 V70 (Trips)
94 300zx (High School Present)
01 V70 (Hub)
08 GranCher (Daught)
01 740iL
09 C40 (Son)
Former:
93 BMW 525i-Daugh's-Seized
02 Chrysler T & C-Kid Hauler-Fire
72 Buick GSX-Dad's-Corroded
76 Golf GTI-Mom's-Died
97 960-1st-Timing

pepsov
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Re: 960 Gas cap hisses when opening

Post by pepsov » Tue Dec 24, 2019 7:17 am

Exact same issue here. Wonder if you found out what the cause was.
Or maybe someone else can share their experience?

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