fuel hiss

[scuba]

whenever i open my fuel cap it hisses like crazy - like theres 30psi backed up in there - someone told me to check and clean the idle - air bypass valve but that didnt do anything - ideas?

 

[sdpatt]

The fuel system is a closed system by design. The seal at the fuel filler cap is even checked during an emissions inspection. The vapor pressure inthe tank changes with ambient temperature and fuel useage. There is nothing wrong with your fuel system. You may relax.



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Scott

1991, 254K miles, glass hood, police grill, SVO shifter, Catz fogs,
K&N, 73mm MAF, Superchip, PP Y-pipe, Borla cat-back, 190 lph pump
Eibach/Tokico/polyurethane, SHO Shop front & rear strut braces,
16x7.5" Moda R1, 225/55ZR16 Bridgestone RE730, -1 deg camber x 4,
6 disc CD, Class II hitch, Silver award at SHOklahoma Car Show

 

[scuba]

cool - thanks!

 

[Bizzy]

Originally posted by sdpatt:
You may relax.

Scott...you continue to amaze me with your knowledge! I don't think I'll relax until I know as much as you do....or move to Texas so you can be my mechanic!

Of course I did know the answer to this one though...for a change.

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Proud to be an American!

Beth
'91 Plus MTX, Mostly stock
K&N Filter, Coneless
Colgan Custom Bra
Racing Series Driving Lights
Mods in the works
Many items on wish list!