Question about 1985 Nissan 300ZX

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In my 1985 300ZX vapor pressure builds-up in the gas tank, and when the gas cap is removed a considerable amount of vapor comes out. Why is this? Thank You I began to notice few months ago,I use the car possibly once / week. I thought it may be the evaporator canister filter, I removed it but it seems a sealed unit.. There seems somewhat of a removable base, but it does not budge. Afraid of breaking it. Hose lines seem OK. I also installed a new gas cap, same thing occurs.

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It sounds to me as if, when refuelling, you put gas in right the hilt. and keep filling it up. this is not good practice as it causes more problems then its worth. It could also the purge solenoid not purging the raw vapors from the tank to the atmosphere. i would get that looked at and the unfortunate part is that's a dealer diagnosis. good luck!

Posted on Aug 24, 2010


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Coil?? with the other symptoms, how'd you come up with that?

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