Put the OEM petcock in. Problem solved. Just finishing out the thread. If you need a new petcock buy a OEM rebuild kit. The $16 petcocks on ebay ones are junk. My bike still leaks when I have it on PRI when it is parked in the garage. But, I think that might be the float needles. That is my next project.
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If you really want the problem solved, don't leave your bike parked with the petcock on PRI. PRI (prime) should only be used to fill the bowls after the carbs have been serviced or the bike has been sitting long enough for evaporation to occur. You should only leave the petcock set to PRI for about 30 seconds or so, then turn it to ON or RES. The float needles were never designed to hold fuel back while the bike isn't running.https://drive.google.com/open?id=0B9zH8w8Civs8ejBJWjdvYi1LNTg&resourcekey=0-hlJp0Yc4K_VN9g7Jyy4KQg&authuser=fussbucket_1%40msn.com&usp=drive_fs
1983 GS750ED-Horsetraded for the Ironhead
1981 HD XLH
Drew's 850 L Restoration
Drew's 83 750E ProjectComment
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09 Kaw C14 Rocket powered Barcalounger
1983 GS1100e
82\83 1100e Frankenbike
1980 GS1260
Previous 65 Suzuki 80 Scrambler, 76 KZ900, 02 GSF1200S, 81 GS1100e, 80 GS850GComment
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Aaaah good to know. So, there is nothing wrong with the needles. The PRI position was not designed to do that.Comment
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I do not have the O-ring model. I was looking specifically for those when I opened it up.Comment
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But, can you leave the non-vaccum petcock open for more than 30 seconds without fuel overflowing from the carb?Comment
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What do you mean by not having an O-ring model? All of the carbs I have seen from other members on this site have O-rings in specific areas of the carbs. In fact, reading the parts fiche there are orings in themLast edited by cowboyup3371; 07-29-2019, 10:31 PM.Cowboy Up or Quit. - Run Free Lou and Rest in Peace
1981 GS550T - My First
1981 GS550L - My Eldest Daughter's - Now Sold
2007 GSF1250SA Bandit - My touring bike
Sit tall in the saddle Hold your head up high
Keep your eyes fixed where the trail meets the sky and live like you ain't afraid to die
and don't be scared, just enjoy your ride - Chris Ledoux, "The Ride"Comment
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I <think> he was referring to the o-ring in the petcock that shuts off the fuel.
Every GS petcock I have had apart has had an o-ring there. You have to have something somewhat flexible to seat against the inside of the body to positively shut of fuel flow. Unless you are the original owner of the bike and can guarantee that nobody has ever worked on it without your supervision, you have no idea who has done what, so quite literally, anything is possible.
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mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
#1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
#2 son: 1980 GS1000G
Family Portrait
Siblings and Spouses
Mom's first ride
Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
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No, there's no O ring on the float valve, just a thin fiber washer.Jordan
1977 Suzuki GS750 (My first bike)
2000 Kawasaki ZRX1100
1973 BMW R75/5Comment
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Now even with a perfect petcock. One of the carbs started overflowing while I was in traffic. MAN, this problem is hard to solve. So, it must be the float valves. But, I cleaned them. So, with float valves do I need to replace the brass seat too? Or just the float valve needle?Comment
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Did you replace the gaskets under the seats....part #13
https://www.partzilla.com/catalog/su...uretor-gs1000n1981 gs650L
"We are all born ignorant, but you have to work hard to stay stupid" Ben FranklinComment
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Yep that was done. They were inexpensive. So, replaced them while I was in there. When I was in traffic I would give the engine gas and gas would come out of the overflow tubes. I drove it a block and did the same thing. Then it stopped. So, it comes and goes.
Thank you for you input!!
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