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Post by s3a on Jun 27, 2019 10:26:32 GMT -5
Several years ago.I went to start my 500 and it was flooded.It wouldn't start.I saw some fuel on the floor and on top of the engine cases.So I figured the needle seats were bad.I pulled all three carbs.I rebuilt them put in new needle seats then fired up the bike and it was fine and running well.Took it out for a ride and was a happy camper again.Parked the bike.Came back to start it again a few days later and SAME thing happening !! Bike flooded.Fuel on floor and on top of the engine cases !! I checked the petcock fuel valve and it wasn't shutting off fuel leaking past.Pressure from the constant fuel flow pushing past the needle seats.I rebuilt the carbs for nothing !! LOL !! I got one of those petcock rebuild kits and it fixed the problem. But the problem came back and the bike flooded again after a couple of months.I finally went and bought a new four hole rubber seal directly from Kawasaki and installed it and the problem never came back.I guess the ones in the aftermarket kits aren't as good ? Get the four hole gasket directly from Kawasaki if still available ? Take some fine sand paper and on a piece of glass and clean up the flat surface of the control for the positioning of the valve, to make sure it is clean and flat, and try the OEM four hole rubber seal.Not100% sure if that is what is causing your over all problem?Just a suggestion. But that is what happened to me.And what I did to fix the flooding over rich problem I had. Thanks for the info, I will look into the 4 hole rubber seal. If I remember correctly I think the H1 and S3 have different style petcocks , but not 100% sure. Either way I will get that issue sorted out at the same time, no one likes fuel all over the floor!
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Post by zambia on Jun 27, 2019 12:20:34 GMT -5
I haven't had time to try switching the carbs yet, but I had pulled the fuel lines off the carbs the other day and today I noticed they are dripping a bit with the petcock "off". This is a bit of a piss-off considering I just put a rebuild kit in it this winter, maybe it is worn beyond repair. What are you guys doing with the baby triple petcocks these days ? New Chinese ones any good ? There are 2 types that I've seen: the pot metal one from Diablo has a poor reputation - I got a Dorm one from them for my S3 7 or 8 years ago..and it's been perfect. You can get these from Doremi on eBay or Webike: japan.webike.net/products/1522048.html
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Post by s3a on Jun 27, 2019 12:41:22 GMT -5
I haven't had time to try switching the carbs yet, but I had pulled the fuel lines off the carbs the other day and today I noticed they are dripping a bit with the petcock "off". This is a bit of a piss-off considering I just put a rebuild kit in it this winter, maybe it is worn beyond repair. What are you guys doing with the baby triple petcocks these days ? New Chinese ones any good ? There are 2 types that I've seen: the pot metal one from Diablo has a poor reputation - I got a Dorm one from them for my S3 7 or 8 years ago..and it's been perfect. You can get these from Doremi on eBay or Webike: japan.webike.net/products/1522048.htmlThanks!!
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Post by s3a on Jun 27, 2019 13:23:33 GMT -5
I just ordered the PMC fuel cock from webike , their website is a bit of a handful but it's nice to see something made in Japan....
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Post by s3a on Jul 12, 2019 16:45:39 GMT -5
Update
It seems as though it was a mix of 2 things, 1) the petcock was leaking by even when off (for some reason giving more fuel to the right carb than the others as well) and 2) the little red seal on the float valve was allowing a little bit of fuel to get by.
Put the new petcock on from webike and changed the seal on the float valve and bingo, seems to be working great !
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Post by Curtis on Jul 12, 2019 18:02:54 GMT -5
A float valve works like an on off switch You could have no fuel cock in the bike with a straight barbed fitting and if your float valve is working fine it will never leak *unless* it is a vacuum operated fuel cock and it is leaking on the vacuum side and going straight to the intake manifold which can be verified by pulling the vacuum line off and looking for fuel in the tube
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