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I replaced petcock and carb gaskets but they still
- car5car
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I replaced carb bowl gaskets and petcock gaskets (disk witch 5 holes and diaphragm)
Carb gaskets were too big so I had to trim them, I could mess up one of them but not all 4! Did I buy junk gaskets from ebay?
Any smart people around? Help!
96 Yamaha Royal Star
82 Yamaha Virago 920
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- Nessism
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- jdvorchak
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As for the petcock leaking, where is it leaking? From around the valve? Dripping through the fuel tube even when shut off?
Don't fix it until it's broken.
John
83 KZ550M1
83 KZ1100LTD
Also own:
2010 Harley Ultra Classic Limited, 2008 Harley low rider 71 CB350/sidecar
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- redhawk4
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I recently had an issue because my petcock was not turning off that one of my carbs started to overflow even though I'd recently set the float heights using the clear plastic tube to check the actual fuel level. That however was coming out of the overflow as intended not the gasket. Once I ran the bike next time it immediately stopped doing it, although my petcock is now functioning. I have to remove my carbs again for another reason, so will look into why that was happening on that particular carb.
It's still hard to see why the gaskets would be leaking in themselves, they are not anything high tech, I would expect even cheap ones to do the job or even ones made from cereal packets.
1978 KZ1000A2 Wiseco 1075 kit
1977 KZ650B1
1973 Triumph Tiger TR7V
1968 BSA Victor Special 441
2015 Triumph Thunderbird LT
1980 Suzuki SP400
Old enough to know better, still too young to care
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- floivanus
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Cheap or too thin of gaskets, warped fuel bowls, stripped screws are possible problems here. As far as leaking gas then magically not leaking again, just sounds like some crud found it's way to the needle/seat and had a little fun.redhawk4 wrote: It's still hard to see why the gaskets would be leaking in themselves, they are not anything high tech, I would expect even cheap ones to do the job or even ones made from cereal packets.
Set floats and inspect needle/seat and seal on the seat
my bikes; 80kz1000(project), 77 gl1000, 74 h2 (project)
Past; 78 kz1000, 83 kz550
Andrew
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- jdvorchak
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redhawk4 wrote:
I recently had an issue because my petcock was not turning off that one of my carbs started to overflow even though I'd recently set the float heights using the clear plastic tube to check the actual fuel level. That however was coming out of the overflow as intended not the gasket. Once I ran the bike next time it immediately stopped doing it, although my petcock is now functioning. I have to remove my carbs again for another reason, so will look into why that was happening on that particular carb.
I have the same problem on my #4 carb where the float will sometimes not shut off the flow. I just pulled the carbs for another problem and when I put them back on #4 overfilled again. I tapped it with a screwdriver and it stopped. But this has happened a couple of times to me. I cleaned the floats and valves numerous times. I polished or burnished the float hinge pin and still for some reason that float sticks open. Next I'll try to polish the valve sides and it's seat walls to see if maybe the valve itself is binding on the walls of the float seat. The carbs are still off the bike and when I bench test them I can't get it to leak or it never has. But put it on the bike and flows fuel in a steady stream out the overflow. I thought maybe it was the angle of the bike but this time it was on the center stand. Last time it happened I had been riding it for about 10 minutes and pulled up to a stop sign and looked down. There it was pouring fuel out. I tapped that bowl with my zippo lighter and it stopped immediately. Let me know if you find a solution.
Don't fix it until it's broken.
John
83 KZ550M1
83 KZ1100LTD
Also own:
2010 Harley Ultra Classic Limited, 2008 Harley low rider 71 CB350/sidecar
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- floivanus
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my bikes; 80kz1000(project), 77 gl1000, 74 h2 (project)
Past; 78 kz1000, 83 kz550
Andrew
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- redhawk4
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1978 KZ1000A2 Wiseco 1075 kit
1977 KZ650B1
1973 Triumph Tiger TR7V
1968 BSA Victor Special 441
2015 Triumph Thunderbird LT
1980 Suzuki SP400
Old enough to know better, still too young to care
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- jdvorchak
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thanks for the tip. I'll check it out tomorrow. now I have TK carbs on the KZ550 not sure if its the same. At least I think they are TK... Getting old sucks.floivanus wrote: I would check that the float on your #4 isnt dropping down too far. There's a tab on the float that hits one of the posts to keep it from dropping too far and having the needle hang up
Don't fix it until it's broken.
John
83 KZ550M1
83 KZ1100LTD
Also own:
2010 Harley Ultra Classic Limited, 2008 Harley low rider 71 CB350/sidecar
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- johnnymoff
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My leftmost carb (the one that is the lowest when the bike is on the side stand) spews out of the overflow within 5 minutes of turning the engine off. Is that the #4 carb? My accelerator pump also leaks very slowly.
I am thinking that once I change the accelerator pump gaskets, the spewing will stop. I might also need to replace a check-valve - my leftmost carb (#4?) has no check valve - i think it is supposed to have one but it is just missing. I have no clue whether this is part of the problem.
BTW, here is an explanation of the clear tube method of checking the float level.
www.xs11.com/forum/showthread.php?t=76
Engine: 77 KZ1000 A1
Frame: 78 KZ1000 B2
Carb Type: VM 26 with accelerator pump.
Needle clip: 3rd (middle) position
Pod air filters
Main Jet 132.5
Idle Jet 20
Clip position on needle 3rd (middle)
Exhaust 4 into 1 Vance and Hines
PO says 1170 kit installed.
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