Raw gas smell - The 1947 - Present Chevrolet & GMC Truck Message Board Network

stumped · 04-07-2008, 04:36 PM

I have a 78 GMC 1 Ton Dually with dual gas tanks. All tanks, lines, fuel pump and componentes are new, but have a strong raw gas smell in the cab while driving. (Not when idling or parked)
Engine is a small block 400 with a holley carb and holley headers.
All rubber lines from the tanks to the carb are new.
Thought that it might be the vents at the sending unit, so I plugged it, but it still smells. The only thing not new are the sending units.
Thanks for any help

04-07-2008, 04:36 PM	#1
stumped Registered User Join Date: Feb 2008 Location: Texas Posts: 7	Raw gas smell I have a 78 GMC 1 Ton Dually with dual gas tanks. All tanks, lines, fuel pump and componentes are new, but have a strong raw gas smell in the cab while driving. (Not when idling or parked) Engine is a small block 400 with a holley carb and holley headers. All rubber lines from the tanks to the carb are new. Thought that it might be the vents at the sending unit, so I plugged it, but it still smells. The only thing not new are the sending units. Thanks for any help

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