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Fuel tank pressure system

D_E_Bishop
Explorer
Explorer
I have a 1990 Bounder 27D on a 1989 P30 chassis and 454 Carbureted engine. It has a California smog system. Can anyone tell me where the pressure line from the engine to the fuel tank starts and possibly where it runs down the chassis to the tank? I have no idea how the pressure is generated, I would like to know that too.

I no longer hear a rush of air when I remove the filler pipe cap. The cap passes the CA smog test so I am assuming the cap is good.
"I travel not to go anywhere, but to go. I travel for travel's sake. The great affair is to go". R. L. Stevenson

David Bishop
2002 Winnebago Adventurer 32V
2009 GMC Canyon
Roadmaster 5000
BrakeBuddy Classic II
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