Ahmadi6490 Posted September 4, 2008 Report Share Posted September 4, 2008 Just bought an 86' Fzr 600 the other day. Got a new battery and starter and it starts right up. It idles good but once I leave 1st gear the idle jumps to 3k rpm and even when I shift back into netural it'll stay there. Any idea? The guy I bought it from said it might need tuned....as in the carbs and whatnot? Quote Link to comment Share on other sites More sharing options...
rch10007 Posted September 4, 2008 Report Share Posted September 4, 2008 Could be a few things...you could check the throttle cables to see if they are sticking. It could be a vacuum leak...with it running, spray WD40 over the intake boots and other hoses to see if the idle decreases. If you have to break into the carbs - find out all the stock settings first...like jet sizes, float height, etc... Then once you tear it apart, you can tell if anything has been done (ie jet kit)... Have you taken apart carbs before? Quote Link to comment Share on other sites More sharing options...
Ahmadi6490 Posted September 4, 2008 Author Report Share Posted September 4, 2008 Nope but they do look very clean tho. I was running the bike without the air breathers in my driveway...that wouldn't have anything to do with it right? Quote Link to comment Share on other sites More sharing options...
rch10007 Posted September 4, 2008 Report Share Posted September 4, 2008 Uh yeah...I started to say it sounded like a lean condition and that would certainly create a lean condition! Quote Link to comment Share on other sites More sharing options...
Ahmadi6490 Posted September 4, 2008 Author Report Share Posted September 4, 2008 I'll give it a try tomorrow...also two more things. When im in gear white smoke will come from under the headers, I looked earlier and couldn't find any leaks. Could something else cause this or is it def a leak and I need to look harder? And The previous owner said the petcock leaks a little bit of gas. Before I rode it today I put tape over the petcock. After riding I saw there was gas on a few wires and the frame but the tape was perfectly dry...any ideas where I should look? Maybe replace the fuel lines because I saw very fine cracks in them. -Thanks a ton Quote Link to comment Share on other sites More sharing options...
rch10007 Posted September 4, 2008 Report Share Posted September 4, 2008 I hope you're just fucking with me... Quote Link to comment Share on other sites More sharing options...
Ahmadi6490 Posted September 4, 2008 Author Report Share Posted September 4, 2008 Haha im not I just have no experience with bikes and this is the first one ive worked on. Come on, i'm learning as I go Quote Link to comment Share on other sites More sharing options...
kenny Posted September 4, 2008 Report Share Posted September 4, 2008 I hope you're just fucking with me... In for flames. Quote Link to comment Share on other sites More sharing options...
kenny Posted September 4, 2008 Report Share Posted September 4, 2008 Haha im not I just have no experience with bikes and this is the first one ive worked on. Come on, i'm learning as I go Do you any experience with common sense? Quote Link to comment Share on other sites More sharing options...
Ahmadi6490 Posted September 4, 2008 Author Report Share Posted September 4, 2008 So im guessing the very very fine cracks are leaking? I mean their real small... Quote Link to comment Share on other sites More sharing options...
rch10007 Posted September 4, 2008 Report Share Posted September 4, 2008 They could be...kinda hard to say from here. Quote Link to comment Share on other sites More sharing options...
Ahmadi6490 Posted September 4, 2008 Author Report Share Posted September 4, 2008 I'll replace them and see what happens. If not I might just buy a whole new petcock unit. Quote Link to comment Share on other sites More sharing options...
kenny Posted September 4, 2008 Report Share Posted September 4, 2008 Just let it leak gas all over. That's the smart thing to do. Throw matches at it, too. Quote Link to comment Share on other sites More sharing options...
Ahmadi6490 Posted September 4, 2008 Author Report Share Posted September 4, 2008 I didnt go on a 20 mile ride knowing it was leaking gas. I went up and down the driveway a few times to check. Quote Link to comment Share on other sites More sharing options...
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