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Gas in the Oil - do i REALLY need to pull carbs apart?

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  • Gas in the Oil - do i REALLY need to pull carbs apart?

    Hey Fellas,

    Hopefully this isn't some question that's been asked and i've missed it. I know there have been some like that - but believe me when i say i've used the search function and didn't come up with exactly my question. So - here goes:


    To start off, I have an '04 600 GSXF;

    Not too long ago i put a new front tire on and with that i tightened my chain to spec. Nothing to serious, but still, this little difference changed the ride from what i was used to and like a noob i dropped the bike when it came to a more sudden stop than i was expecting.

    The bike seemed fine for the time being and rode away well enough, but i noticed that it had leaked some fuel from the petcock and down the side of the fairing. The petcock was loose, so i figured that would just be an easy fix, since i've had to rebuild my fuel switch before due to a bad diaphragm allowing it to leak. Well, i have yet to rebuild the petcock since after that one day of leaking it never did it again and was riding okay - so i figured i had time to find an actual petcock rebuild for my exact bike (since the last kit i got was for a pre-kat; and i couldn't use ALL the parts in it. I sort of wanted to get ALL new parts - but the only kit i've found is just too expensive in my opinion - i'm open to suggestions on where to find this as i'm sure some of you have encountered this)

    So the petcock has NOT been rebuilt but is no longer leaking - at least not on the outside as it was before. The mother of the problem now is that i have fuel in my oil.

    What brought me to check this was from reading around in the forum about what i originally thought was the problem. Which was: i thought i just needed to adjust my idle speed or something, because when i ride it doesn't really start right up like i usually does and when i do get out and about, it almost wants to die out when i'm gearing down for a stop. Even when the bike it hot it wants to idle too low and die. I sort of fiddled with the idle speed/adjuster knob but was having issues with that because the knob itself doesn't actually make any full rotations - i go to turn it left or right and it just snaps right back to the position it was in - so this got me wondering. Long story short I came across the information that suggested to check the oil for fuel - i did and it reeks of gas.

    This is my only ride, my main gal; so as you might figure I don't have a lot of room for TOO much down time with my bike, i can't be out of commission for very long. So the least amount of waiting is necessary.

    I'm wondering, will i have to tear apart all my carbs just to fix this, or could it be as simple as mending the petcock?

    I have looked at the cost of rebuild kits and they can get pretty pricey for carbs. I have watched and read all the carb 101 and 102 posts and as awesome and informative as they all are, they are also a bit intimidating. I am just hoping i won't have to tear it all apart to solve this problem - but i know i need to do something SOON.

    All help is appreciated - thanks for reading my post and getting back to me!

    Also, if anyone knows of a cheap petcock rebuild kit then please let a brotha know. I'm taking deep breaths and keeping calm - but know, i am freaking out a little inside, and riding as little as possible since i know gas in the oil is terrible. There's just little else i can do about it (as it's my only ride to and fro)

  • #2
    You must clean your carbs. ( could just be something is knocked out of place allowing gas to leak through your float assemblies)
    You must change your oil.
    You don't need a petcock rebuilt kit (but it wont hurt)

    The results of running your bike with gas in the oil can be nothing less than catastrophic.

    Even if you have to take a day off work to get your carbs sorted out. you'd be saving yourself the cost of buying a new ride if you keep riding it all week.

    Comment


    • #3
      Yeah, I've already noticed it's shifting all funny.
      So, I don't want to ride around really.
      Thankfully i don't have work right now, so i have time - but i'm trying to make sure I have everything I'm going to need before i stare taking anything apart.

      So, just to confirm - you're saying I'll need to bust apart my carbs and clean them huh?

      You think i'll have to take them off the rail and EVERYTHING?

      Sorry for sounding like such a noob here, but like i said - just sorta freaked out.
      Last edited by drewpleblanc; 07-29-2013, 01:31 PM. Reason: Automerged Doublepost

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      • #4
        Yup - carbs need to come off, cleaned for a couple of days and rebuilt.

        New oil and filter. I'd also rebuild the petcock if there is any chance of it leaking again.

        Comment


        • #5
          Follow carbs 102, if the carbs have never been cleaned you will more than likely have to soak the bodies once everything is dissembled.

          The easiest way to know if you need something replaced is to get in there and take a look at everything. or get yourself the carb rebuild kits and swap everything out.

          If you aren't interested in ever going back into your carbs now would be a good time to install a jet kit (stock main jets are usually too small and you can go one size up on a stock setup without upsetting anything) and make sure you have no rust in your gas tank or all your cleaning will all be for nothing.

          Just remember the biggest problems can be the ones you can't see there are alot of small holes in the carbs that might look fine but are plugged up. so that's why a good long soak is recommended.

          I would focus on the underside of the carbs making sure the seals around the float assemblies are all in good shape as well as your float needles for wear. Once everything is back together you should be able to blow in the gas lines and no air should move; if it does something is leaking and you'll just get gas in your oil again. it's a good idea to test the carbs with the gas tank off the bike before putting them back on. wait 10-15 minutes on prime and if nothing leaks that's a pretty good sign.

          Comment


          • #6
            The other option is to buy a new set of carbs (really expensive) or a rebuilt set from someone like Arsenic. That way you can just put them on and sync them and you should be good to go. Before you get sticker shock on them, think about how expensive the rebuild kits are and how long it takes to do it right. Even if you manage to get them right the first time, it's still a 2-3 day job.
            Get over yourself. For me to think you are an idiot, I would first need to think of you.

            sigpic

            Comment


            • #7
              Originally posted by drewpleblanc View Post
              The bike seemed fine for the time being and rode away well enough, but i noticed that it had leaked some fuel from the petcock and down the side of the fairing. The petcock was loose, so i figured that would just be an easy fix...

              So the petcock has NOT been rebuilt but is no longer leaking - at least not on the outside as it was before. The mother of the problem now is that i have fuel in my oil.

              I sort of fiddled with the idle speed/adjuster knob but was having issues with that because the knob itself doesn't actually make any full rotations - i go to turn it left or right and it just snaps right back to the position it was in - so this got me wondering. Long story short I came across the information that suggested to check the oil for fuel - i did and it reeks of gas.

              I'm wondering, will i have to tear apart all my carbs just to fix this, or could it be as simple as mending the petcock?

              Also, if anyone knows of a cheap petcock rebuild kit then please let a brotha know.
              Were you SURE it was leaking at the petcock and not just the bowl overflows? If the petcock was loose on the take that could be your leak but the overflow tubes would dump the gas in the bowls as well if it was laid on its side.

              If you have gas in your oil you either have an internal leak in the petcock AND a float needle that is not sealing OR you are running so rich as to wash down your cylinders with gas. I'd guess the first of those two options.

              Idle speed set screw should turn, if its not you have another problem there.

              To get to the leaking float needle you'll have to at least take the carbs off the bike and the bowls off the carb bodies. Might as well do a proper cleaning and rebuild since you are in that far already.

              You can test the petcock to see if it does need a rebuild. Instructions are on the site somewhere, just do a search.

              As for rebuild kits, Ebay can be your friend. I grabbed four K&L carb kits for $52 shipped and a petcock kit for around $25 shipped. You could grab a new petcock on there for less than $70 if you want to go that route. If you want to avoid the hassle of dealing with cleaning the carbs you could buy a nicely rebuilt set from Arsenic, ready to put on, $350-400 I believe.

              Comment


              • #8
                +1 ^^ Arsenic can usually sell you a set that would take a month of cleaning to rival. and you know they won't leak gas into your oil.

                Comment


                • #9
                  I'm thinking the carbs have never been cleaned. And will be sure to take tons of pictures while i disassemble - for reference. I'll be sure to post those pictures up somewhere on here for other peoples references. I know i sure wouldn't mind a plethora of pictures!

                  So, what sort of cleaning solution am i dipping the bodies in/letting them sit in overnight?

                  Anyone know of a petcock replacement for my year and size Kat? (2004 600cc)
                  I'm gonna redo that too just in case.

                  The good thing is, it's not like TONS of gas is getting into the oil because my fuel guage doesn't really drop dramatically or anything. So, that's on the plus side.

                  _____And thanks for the tip about the new carbs; that's not TOO bad, not as bad as i saw some priced on another side (600-700$)

                  Maybe I'll just start on Friday and be done on Sunday. Have to do this, but once i start i'll have no ride. So, it's do or die.
                  Last edited by drewpleblanc; 07-29-2013, 01:51 PM. Reason: Automerged Doublepost

                  Comment


                  • #10
                    Originally posted by drewpleblanc View Post
                    So, what sort of cleaning solution am i dipping the bodies in/letting them sit in overnight?
                    Berryman's

                    http://www.berrymanproducts.com/prod...parts-cleaner/

                    Comment


                    • #11
                      _--_-_-_-_-_--

                      Also, anyone know where i could find like a breakdown diagram of parts and where they go? Schematics of the carb? Blueprints?

                      every little bit helps.

                      Comment


                      • #12
                        ronayers
                        bikebandit

                        there are others

                        Comment


                        • #13
                          Steve did a video of carbs 102, breaking down and cleaning a set of post carbs. It's on this site...
                          Get over yourself. For me to think you are an idiot, I would first need to think of you.

                          sigpic

                          Comment


                          • #14
                            Originally posted by Badfaerie View Post
                            Steve did a video of carbs 102, breaking down and cleaning a set of post carbs. It's on this site...

                            Yeah, those video's are super helpful! But The camera isn't SO clear that i can see every bolt he pulls out and from where exactly. So, i want a pull-apart diagram/schematic that shows where every bolt and bit fits back in just for clarification mostly.

                            Thank the Motorcycle Gods and Steve for his videos!

                            Originally posted by Maverick.Marq View Post
                            ronayers
                            bikebandit

                            there are others

                            Sweet, I went on Ronayers and got a pretty good disection!

                            Thanks a lot.
                            Last edited by drewpleblanc; 07-29-2013, 02:30 PM. Reason: Automerged Doublepost

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