Ben
Announcement
Collapse
No announcement yet.
1980 GS 550 fuel lines
Collapse
X
-
newt113
1980 GS 550 fuel lines
I'm rebuilding a 1980 GS 550ET. I am having problems figuring out how the fuel lines are supposed to be configured after they exit the petcock and before they enter the carbs. I'm not sure which ports are for vacuum, which lines are for fuel delivery, what are any other lines that might be. Is there one direct fuel line into the carbs or does the line divide into three delivery hoses into the carbs? Does anyone have a schematic of how the heck these fuel lines look when they are hooked up right. Thanks very much, and I can be reached at JBeneauMetz@gmail.com or newt113@hotmail.com Have a great day.
BenTags: None
-
80GS1000
The big port going from your petcock is the fuel line. It hooks up into the large hose between your #2 and #3 carbs. The smaller port one is the vacuum line. It hooks up into a smaller tube which connects at the back of your #2 carb.
-
newt113
but what about?...
Thanks for the response, I think that I understand a little bit better. what about the 2 other tubes that are entering the carbs on the same side as the middle fuel intake line. what do they do and are they supposed to have anything attached to them?
Comment
-
txironhead
Those are vent lines, they should have tubes attached that either attach to the airbox or just vent into the atmosphere. If you're running pod filters, it's recommended to cap those tubes off to prevent siphoning.
Comment
-
Forum LongTimerGSResource Superstar
Past Site Supporter
Super Site Supporter- Mar 2006
- 35588
- Torrance, CA
Originally posted by txironhead View PostThose are vent lines, they should have tubes attached that either attach to the airbox or just vent into the atmosphere. If you're running pod filters, it's recommended to cap those tubes off to prevent siphoning.Ed
To measure is to know.
Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182
Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846
Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf
KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection
Comment
-
Originally posted by txironhead View PostThose are vent lines, they should have tubes attached that either attach to the airbox or just vent into the atmosphere. If you're running pod filters, it's recommended to cap those tubes off to prevent siphoning.
If you are using a stock airbox, the hoses are probably routed over the airbox and under the seat.
You might find a loop on top of the airbox that will hold the hoses in place.
If you are using individual pod filters on the carbs, remove the hoses. Leave the vents open, the carb bowls still need to breathe. :shock:
.sigpic
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)
(Click on my username in the upper-left corner for e-mail info.)
Comment
-
newt113
Thanks
Hey thanks for all of the replies fellas. Your information was really helpful. I'm running two pod filters on the bike from K&N so there will just be vent lines coming out of the carbuerator (spelling). is the consensus that I should not put hoses on these vents and leave them just a bare nipple coming out of the carbs?
Comment
-
That would be correct, bare vent nipple, no hose. I don't know if there is a preferred position, but I think I would point them down.
.sigpic
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)
(Click on my username in the upper-left corner for e-mail info.)
Comment
-
txironhead
There was a rather lengthy thread here about how running the vent tubes with pods caused a siphoning condition. The recommendation was to cap the tubes. I haven't had a chance to test this on my bike as I'm still trying to get it running. Maybe running the tubes to where air cannot flow over the ends at speed?
Are the vents are there simply to allow fuel gasses to exit the system without building up pressure?
Comment
Comment