Smell of gas in the cab - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Jason Bourne** · 11-29-2023, 09:37 PM

Hello all, new to the site and I’m looking for some info.

My son has a 1972 V8 Auto C10 with EEC and the smell of gas in the cab. The 1st thing I am going to try is replacing the fuel sending unit gasket and all the rubber hoses that are connected to the gas tank. The fuel sender for my truck has 2 hoses that go to it, one is larger than the other. I assume the larger one (supply) is 3/8 inch not sure what size the smaller one (return) is?

The trucks fuel tank also has 2 rubber hoses on the passenger side (EEC) and 1 rubber hose on the drivers side that goes to the fuel neck. These hoses look all the same size. I assume they are 3/8 Inch?

Can anyone confirm if my assumptions are correct that they are all 3/8 inch? Also does anyone know the size of the smaller rubber hose for the return on the fuel sender?

11-29-2023, 09:37 PM	#1
Jason Bourne Junior Member Join Date: Nov 2023 Location: Austin, Texas Posts: 35	Smell of gas in the cab Hello all, new to the site and I’m looking for some info. My son has a 1972 V8 Auto C10 with EEC and the smell of gas in the cab. The 1st thing I am going to try is replacing the fuel sending unit gasket and all the rubber hoses that are connected to the gas tank. The fuel sender for my truck has 2 hoses that go to it, one is larger than the other. I assume the larger one (supply) is 3/8 inch not sure what size the smaller one (return) is? The trucks fuel tank also has 2 rubber hoses on the passenger side (EEC) and 1 rubber hose on the drivers side that goes to the fuel neck. These hoses look all the same size. I assume they are 3/8 Inch? Can anyone confirm if my assumptions are correct that they are all 3/8 inch? Also does anyone know the size of the smaller rubber hose for the return on the fuel sender?



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