Hi, I recently re-jetted the carb. on my suzuki sp600. I went up two sizes on the main jet, and at that time I checked that the float height was in spec, which it was, and then left it alone. I reassembled everything and now the bike is running fine. The weird thing is, when I park the bike and turn the petcock to OFF, the carb drips steadily through the bottom of the float bowl vent hose. I'd assume because it was emptying its contents onto the floor that it has something to do with the carb float bowl assembly. But.... A day later I'll come back to check out the floor and there's a gigantic puddle underneath it, and it's still dripping gas. :huh So is it a problem with the petcock too? I just cleaned the petcock, so yeah, I might've botched something up reassembling it but I've run on reserve and main, so I know that when I turn the petcock to OFF it is in-fact in the off position. Additionally, if there is something wrong with the float bowl/ assembly what should I be looking for? Thanks in advance for any/ all help.
failed vacuum mechanism. maybe material, maybe mechanic. replace with non vacuum petcock. cavematt say cross reference. cavematt say you have thread in progress http://www.advrider.com/forums/showthread.php?t=583293 also maybe a bit o schmeg on the float needle too
i vote for non vacuum petcock. yamaha raptor worked on my old dr650, not sure what fits your bike. ask in the sp600 thread, they'll know. imho vacuum petcocks suck. if it still leaks with an actual "off" petcock, there's some schmeg in the float needle seat. remove and clean.
