| Twisted Fuel Line/JB Weld? [message #357602] |
Sun, 09 August 2020 14:20  |
Greg C.
Messages: 224
Registered: October 2019
Location: Knoxville, TN
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Senior Member |
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Today I tightened the AC compressor belt. A little easier than I thought it would be. Then I was going to change the carburetor filter.
Background, I drove the coach 1000 miles from Texas, the first day barely making headway because of engine hesitation/misfire due to water in the fuel. Eventually made it home, got the coach jacked up and found a clear plastic fuel filter in front of a Mr. Gasket electric fuel pump which was in front of the fuel selector valve. Said plastic fuel filter was half full of water.
Last week I drained both fuel tanks through the drain plugs into a pan. I had an old Dodge truck fuel pump mounted on a board with a Racor marine water/fuel separator filter. I pumped all the gas (20 gallons) through this filter into five gallon cans. After draining a little water out of the Racor, I pumped all the gas back through the Racor into the coach.
I removed the Mr. Gasket pump, cleaned out its prefilter, and tested it. Seems to work fine, but did not work on the coach. Ran down the power wire that was connected to it, and found that a PO had cut the wire. I installed a new fused circuit with a switch, and now it does work. I then drove it to a gas station and filled it up.
So the next thing on my list was to replace the carburetor fuel filter. But when I looked at it today, I could see that I was in trouble. If you look behind the copper gasket on the screw in filter housing, you will see what appears to be JB Weld. I know this particular problem is thoroughly documented in the forum and also how it happens. I've seen this happen myself to a Q Jet in the past.
[url=http://www.gmcmhphotos.com/photos/data/7320/medium/Twisted_fuel_line1.jpg] [url]
I am hoping that whoever boogered this up didn't go ahead and put a filter in there. The fuel line has been cut and rubber line installed along with a tee fitting, currently plugged up. Maybe a fuel pressure gauge was being used to diagnose a problem, I don't know.
So, what should I do here? I haven't tried to remove the fuel line fitting. I probably can do that, as it doesn't look cross threaded. I also took a picture of the carb serial number, so I can see if it is an original carb.
http://www.gmcmhphotos.com/photos/data/7320/Carb_Number.jpg
[url=http://www.gmcmhphotos.com/photos/data/7320/Carb_Number.jpg] [url]
Lastly, there is a vacuum line shown in this picture that is plugged. There is also what appears to be a thermostatically controlled vacuum port near it. Does this line go there? What does it do? Do I need to fix it?
[url=http://www.gmcmhphotos.com/photos/data/7320/medium/Mystery_vacuum_line.jpg] [url]
Thank you.
Greg Crawford
KM4ZCR
Knoxville, TN
"Ruby Sue"
1977 Royale
Rear Bath
403 Engine
American Eagle Wheels
Early Version Alex Sirum Quad bags
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