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Tanks are out, mechanic not happy [message #352433]

Wed, 26 February 2020 17:16

Bullitthead

Messages: 1411
Registered: November 2013

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Senior Member

I was expecting to find crushed, collapsed, or old, vacuum collapsible hose to account for the random power loss. No such luck...Now I will have to dig into the fuel tanks, which I guess I was going to do anyway. But now the possibilities have been narrowed down to the filter socks or pickup tubes in the tanks,or the device in the wheelwell that looks maladjusted.
Apparently, someone has been here before. The fuel lines are 30R7 and still flexible enough to disconnect without damage. The vent lines were stiff, the front tank filler neck hose snapped the paper thin nylon tee by the frame before I could get to the clamp even with my 18 inch extension. That hose would not have let go of that tee anyway Laughing

The filler neck vent hose barb on that tank is also apparently the fuel leak when I fill the tanks and it drips out in front of the rear wheel for the first few hundred feet.

http://www.gmcmhphotos.com/photos/fuel-system/p67071-fill-pipe-26amp-3b-vent-tee.html

This the top of the rear (Main) tank

http://www.gmcmhphotos.com/photos/fuel-system/p67074-rear-tank-top.html
All ins and outs accounted for except the one with a bolt clamped in the stubby hose on the side. Generator feed is the right angle fitting at corner, red capped port on top goes to filler neck vent. Sending unit has engine feed and canister lines. Anybody know what was the original purpose of the port closed off by the hose and bolt?
There is also a device in series with the rear tank vent line that is located in the LR forward wheelwell,don't have a pic of that yet, but even though the tank has 2 vents I wonder if it is the cause of the power loss. I think it's a gravity sensor to close the line between the tanks in case you remain on a steep angle for a long enough time. I'm going to perform some tests on it and get a pic to post in a reply once the workload clears.

Terry Kelpien ASE Master Technician 73 Glacier 260 Smithfield, Va.

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[Message index]

		Tanks are out, mechanic not happy By: Bullitthead on Wed, 26 February 2020 17:16
		Re: [GMCnet] Tanks are out, mechanic not happy By: jimk on Wed, 26 February 2020 18:44
		Re: Tanks are out, mechanic not happy By: Green machine on Wed, 26 February 2020 21:09
		Re: Tanks are out, mechanic not happy By: Ken Burton on Wed, 26 February 2020 23:59
		Re: Tanks are out, mechanic not happy By: Matt Colie on Thu, 27 February 2020 08:09
		Re: Tanks are out, mechanic not happy By: Bullitthead on Thu, 27 February 2020 13:08
		Re: Tanks are out, mechanic not happy By: Ken Burton on Thu, 27 February 2020 13:31
		Re: [GMCnet] Tanks are out, mechanic not happy By: Dolph Santorine on Thu, 27 February 2020 13:26
		Re: Tanks are out, mechanic not happy By: jhbridges on Thu, 27 February 2020 07:59
		Re: Tanks are out, mechanic not happy By: RF_Burns on Thu, 27 February 2020 08:26
		Re: Tanks are out, mechanic not happy By: jhbridges on Thu, 27 February 2020 14:54

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