What Routy says above is true -- I would recommend taking off the vac petcock on any bike that shows "carb issues" or fuel supply issues and replacing it with a Raptor petcock.
list of issues is here http://suzukisavage.com/cgi-bin/YaBB.pl?num=1251932429/1Why? You cannot separate the 5 known failure modes of the stock vac petcock from other carb/fuel supply issues that your bike may have and it makes it VERY DIFFICULT to troubleshoot your issues when you have vac petcock issues in the mix clouding up the water so to speak.
Most bikes show immediate improvements from the Raptor installation as it immediately removes ALL vac petcock effects. The remaining true issues with other systems, carb, tank cap, etc. are easily identified and fixed then.
But in this case, I am glad it was correctly identified as a plugged cap vent and you fixed it with minimal trouble.
The following information can be found in this thread suzukisavage.com/cgi-bin/YaBB.pl?num=1337217774/15#15
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splash07 wrote on 05/19/12 at 15:40:25:verslagen1 wrote on 05/16/12 at 18:45:33:check your petcock
+1
Splash07 speaking: Had the same symptoms and sure enough it was the petcock. letting too much gas down the vac line and overflowing oil out the crankcase breather.
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OF speaking: I guess you are saying it overfilled your crankcase by adding such a volume of gasoline to the sump the oil/gas mix was blowing out the top breather tube down to the air box ???
Wow -- please tell me this didn't happen for real !!!
Molotov cocktail, just needed a backfire spark ..... Routy wants very much for this not to be the case, as do I
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Splash07 speaking: No, not down the air box, no air box, so it blew gas oil mix out the crankcase breather filter just under the tank and all over me and the rear tire while going down the highway at about 45 mph. Not exactly safe.
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OF speaking: So, you
are telling us that a bad stock vac petcock was dumping enough gasoline down the vac tube to overfill your sump to the point that gas/oil mix was coming out the top blow by tube and spraying flammable gas/oil mix on your legs and lower body?
You do realize that a carb backfire or a road tossed rock making a spark could have turned you into a localized version of The Burning Man ????
Routy, I am sorry. I wanted him to say no too. But he didn't.
You have defended the stock vac petcock all along and you have always said (as you did above) that the basis for your staunch defence was safety related and you predicted that the Raptor would eventually cause some sort of float/sticking event that put gasoline into a sump.
It is ironic that the "burning man" scenario that you feared has finally happened, but it was the stock vacuum actuated petcock that did it using one of the most popular of the 5 known vac petcock failure modes to do it.
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