Gas tank vent valve
#1
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Gas tank vent valve
So when I take the cap off my car it hisses like it's not venting. Is it just the vent valve under the car. It also seems like it doesn't get quite enough fuel, could that be helping to cause that issue?
#2
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Car: check
Engine: check
Transmission: check
Re: Gas tank vent valve
Unlike older cars our f-body's have a closed fuel system. Along with all (nearly all?) cars of this era.
As for not getting enough fuel, how can you tell? Fuel filter changed in recent months?
RBob.
#4
Junior Member
Thread Starter
Re: Gas tank vent valve
That is normal. The tank retains some pressure as it vents through the charcoal canister. Which is controlled by a vapor pressure valve.
Unlike older cars our f-body's have a closed fuel system. Along with all (nearly all?) cars of this era.
As for not getting enough fuel, how can you tell? Fuel filter changed in recent months?
RBob.
Unlike older cars our f-body's have a closed fuel system. Along with all (nearly all?) cars of this era.
As for not getting enough fuel, how can you tell? Fuel filter changed in recent months?
RBob.
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