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Leaking gas from installed pods
- blorgfreth
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My problem is the EGR and crankcase breather hoses. What the guy did was just poke a hole in one pod for the breather hose, and in another pod for the EGR hose. This causes 2 problems.
First, the one with the crankcase breather is sucking up oil, and causing carbon buildup on one of the spark plugs after a few hundred miles. Second, and more troublesome, the one with the EGR hose is leaking gas when the engine's under a load. The more I open up, the worse this problem gets. After a good 50 mile ride, the crankcase is dripping with gas under the carbs.
A stock setup seems to just route these hoses directly into the airbox in front of the filter, but I can't seem to think of a better way of routing the hoses with the pods.
Do you guys have any advice, or is this just something I have to live with if I run with the pods?
Edit: I suppose it's also possible that the valve shouldn't be dumping nearly so much liquid gas anyway, so if you have any ideas there, it would be helpful.
Thanks.
Post edited by: blorgfreth, at: 2007/10/22 10:53
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- violentvintagecycles
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I BELIEVE everything else should be plugged up, not sure on that but im sure someone here will give you the right answer and ill also be watching for the same answer because ill be doing the same thing, removing the emissions junk and plugging everything up.
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- CoreyClough
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If he's poked a hole in the pod filter and is running the breather hoses in there, that could be sucking the fuel out of the carbs and into the pod filters. Those breathers need to be run somewhere to filtered air. Bowl Vents are just that. You suck a milkshake from a straw, and you get milkshake. As the fuel is used in the bowls, the space there must be replaced with either air or fuel to keep it balanced. It's a breather, and they shouldn't be hooked up to a vacuum or pressure.
Are you stil running the emission stuff over the valve covers?
The vacuum ports in front of the carbs should look like this:
The rear of the carbs should look like this:
The green colored lines above, are the carb bowl breather lines. If you leave them open, you'll get dirt in the bowls. Use a breather filter for the crankcase, and bowl vents. Cap off, and remove the emission vacuum stuff. No one will turn you in for doing that.
Post edited by: CoreyClough, at: 2007/10/22 11:36
'85 GPz550(ZX550-A2)
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- CoreyClough
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Post edited by: CoreyClough, at: 2007/10/22 11:34
'85 GPz550(ZX550-A2)
GPz550 Base Manual --> tinyurl.com/ze5b3qo
GPz550 Supplement Manual --> tinyurl.com/h34d2o6
GPz550.com --> www.nwsca.com/scripts/gpz_forum_2005/default.asp
First Race Win GPz550 --> tinyurl.com/o5y3ftp
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- blorgfreth
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CoreyClough wrote:
No pic yet, but I'll update with one when I can. Hopefully this can help.Picture of this?
The hose labeled "92059A" is what's plugged directly into one of the pod's filter. I'm guessing you're correct about it sucking gas out of the intake.
Are you stil running the emission stuff over the valve covers?
As far as I'm aware, the parts above the airbox in the above image are the only emissions stuff on the bike.
The vacuum ports in front of the carbs should look like this
I'll have to take a look at the bike tonight, but where is the big hose in the middle ending up?
The rear of the carbs should look like this:
...img...
The green colored lines above, are the carb bowl breather lines. If you leave them open, you'll get dirt in the bowls.
Ok, so that's a problem, since they are open, with the hoses just leading nowhere. I'll get a filter on it, but otherwise that's not the cause of any trouble, correct?
So if I get you right, I should just put a filter on the crankcase and those bowl vents, and then cap off the "92059A" hose? Or are you saying that I sould run that hose into the bowl vents and cap off something else?
Edit: Cropped image to be less irritating.
Post edited by: blorgfreth, at: 2007/10/22 12:20
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- blorgfreth
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Can you point me to the breather filters you're talking about? I can't seem to find them on z1.I have an 82 kz550, almost the same and im going to be installing pods as well. I know the crankcase breather is supposed to have its own breather filter, z1 has em, saw them on ebay stores too. The large hose that goes from the top of the valve cover that used to go into the airbox is also supposed to have its own breather.
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- CoreyClough
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Find out your measurement, and see which fits. The one on my engine came with it, but I'll be happy to get any numbers off it and a few pictures next weekend when I'm working on my bike.
I have 2 of these Key Fob Filters attached to the hoses coming from the bowl vents that work out very nice: K&N P/N 87-0150
That large hose you speak of in the picture above, is routed to the airbox, and only exhales the exhaust gasses from the reed valves when the pressure exceedes the valve. That whole smog assembly with the hoses chould be removed. Cap off the valve cover holes(black silicone), or use a hose and loop them togeather. In my carb pictures, there should only be one vacuum hose going to the petcock. Makes it all simple and less hoses to leak.
Post edited by: CoreyClough, at: 2007/10/22 15:22
'85 GPz550(ZX550-A2)
GPz550 Base Manual --> tinyurl.com/ze5b3qo
GPz550 Supplement Manual --> tinyurl.com/h34d2o6
GPz550.com --> www.nwsca.com/scripts/gpz_forum_2005/default.asp
First Race Win GPz550 --> tinyurl.com/o5y3ftp
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- violentvintagecycles
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- blorgfreth
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...helpful info...
Awesome. So once I've got those filters, it takes care of that. I'll probably just loop the smog hoses together so I can easily put it back in place if needed.
Hopefully the last questions on this. Will I need to do any additional tuning after removing the the smog assembly?
Would there be any trouble leaving it on and just capping that large hose?
violentvintagecycles wrote:
Blorg, i cant seem to find them on Z1 either...
No prob. Thanks for the ebay link. I figured it was just a generic one, but wasn't sure if I should be looking for a specific piece.
Thanks for the help guys. I get nervous working on the bike, since I live in an apartment. I have one go at fixing stuff, and can't leave things taken apart or unfinished overnight while I wait for parts or research stuff.
Post edited by: blorgfreth, at: 2007/10/22 17:28
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- CoreyClough
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'85 GPz550(ZX550-A2)
GPz550 Base Manual --> tinyurl.com/ze5b3qo
GPz550 Supplement Manual --> tinyurl.com/h34d2o6
GPz550.com --> www.nwsca.com/scripts/gpz_forum_2005/default.asp
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- wiredgeorge
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wiredgeorge Motorcycle Carburetors
Mico TX
www.wgcarbs.com
Too many bikes to list!
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- CoreyClough
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I agree if using pod filters, then trash the vacuum valve system.
Makes sense about the breather filter. If he's getting pressure from it, then it's a sign on piston ring blow-by, and a complete compression test(wet and dry) should be performed. The breather system doesn't need to be a complete sealed system like on cars, routing it back to the intake, so routing it away from where road dirt and water can enter is what I'd recommend.
Thanks for your opinions and suggestions George, always look forward to them.
'85 GPz550(ZX550-A2)
GPz550 Base Manual --> tinyurl.com/ze5b3qo
GPz550 Supplement Manual --> tinyurl.com/h34d2o6
GPz550.com --> www.nwsca.com/scripts/gpz_forum_2005/default.asp
First Race Win GPz550 --> tinyurl.com/o5y3ftp
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