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    #1

    New problem and questions

    Howdy again.

    I was checking my air filter today, looked good. I'm still waiting for my manual from Wyomingben.com (i'm getting annoyed.) so I decided i would pull the bowl drain screws and see what I found. lo and behold, all kinds of debris came out of each bowl (the 2nd one, which i have problems with, being the worst) i primed the carbs back up and fired up. it was getting kinda dark, and i looked down (i had my ignition cover off, to check wiring earlier) and i noticed a visible spark b/w the points and their impact point. my first question is: "Is that normal?" i'm inclined to think that it's abnormal.

    my second question (and subsequent questions) is/are relative to another thing: after i noticed the spark, as i put my hand on the killswitch to kill the engine, i got two REALLY GODAWFUL HIDEOUS LOUD backfires. they sounded like a .45 revolver going off. after my ears stopped ringing, i thought that there might be an issue with my intake manifold boots. would this cause the kind of backfire i experienced? would the poor condition of the cleanliness of the carburetors coupled with abnormalities in ignition cause this? any suggested recourse (i'll clean the carbs as soon as i get my manual) (and if you think it might be intake boots, where could I go about ordering the set of them?)

    thanks in advance

    Chris
    Tags: None
    #2
    Re: New problem and questions

    At about dark, a visable spark on the points is normal. Every time they open, there will be a small spark.

    Sure sounds like a good carb cleaning will help a lot. heh heh

    You said..........as i put my hand on the killswitch to kill the engine, i got two REALLY GODAWFUL HIDEOUS LOUD backfires. ...........
    My suspicion is that you put your hand on the kill switch with momentary pressure, which for a second or two killed the ignition. When you took your hand off the kill switch, the ignition resumed. During this time, the engine continued to draw fuel, so when the ignition do resume, there was excess gas in the cylinders and KabOOm! I wouldnt worry about it.
    I used to do the same thing with my father's car when I was a kid. Turn the key off, wait a couple seconds, then turn it back on. Kaboom. LOL

    Earl




    Originally posted by m0unds
    Howdy again.

    I was checking my air filter today, looked good. I'm still waiting for my manual from Wyomingben.com (i'm getting annoyed.) so I decided i would pull the bowl drain screws and see what I found. lo and behold, all kinds of debris came out of each bowl (the 2nd one, which i have problems with, being the worst) i primed the carbs back up and fired up. it was getting kinda dark, and i looked down (i had my ignition cover off, to check wiring earlier) and i noticed a visible spark b/w the points and their impact point. my first question is: "Is that normal?" i'm inclined to think that it's abnormal.

    my second question (and subsequent questions) is/are relative to another thing: after i noticed the spark, as i put my hand on the killswitch to kill the engine, i got two REALLY GODAWFUL HIDEOUS LOUD backfires. they sounded like a .45 revolver going off. after my ears stopped ringing, i thought that there might be an issue with my intake manifold boots. would this cause the kind of backfire i experienced? would the poor condition of the cleanliness of the carburetors coupled with abnormalities in ignition cause this? any suggested recourse (i'll clean the carbs as soon as i get my manual) (and if you think it might be intake boots, where could I go about ordering the set of them?)

    thanks in advance

    Chris
    Komorebi-The light filtering through the trees.

    I would rather sit on a pumpkin and have it all to myself than be crowded on a velvet cushion. H.D.T.

    Comment

      #3
      the thing was, though, that I didn't depress the button, i was in the motion of moving towards it... i saw a visible orange spark come out of the right tailpipe as well.. i neglected to mention that

      Comment

        #4
        Hmmm, "reaching" for the kill switch is a bit different. :-) You did say, " I primed the carbs and started it back up" Were you still running on the prime setting when this happened? I know it happened because one (or more) cylinders was too rich. You didnt say it always happened, so this one time, I'm wondering what you did different than your normal routine? I wouldnt make any changes at this point. Wait and see if it is going to reoccur.
        The baby could have had nothing more than a hiccup. :-)

        Earl


        Originally posted by m0unds
        the thing was, though, that I didn't depress the button, i was in the motion of moving towards it... i saw a visible orange spark come out of the right tailpipe as well.. i neglected to mention that
        Komorebi-The light filtering through the trees.

        I would rather sit on a pumpkin and have it all to myself than be crowded on a velvet cushion. H.D.T.

        Comment

          #5
          I wonder if having a float stuck open would cause that? However it happened, you had gas in your exhaust, it can happen with momentary killed ignition, or if you cranked it a lot before it started. It sure does wake you up though doesn't it.

          Comment

            #6
            Yeah, i went outside and tried starting it again. It will ONLY start and run on "prime" now. I couldn't get it to go with the "on" or "reserve" settings on the petcock.

            i let it warm while it was doing that, and sure enough, it backfired like a mother again. this time I had earplugs in...cuz i'm still reeling from how loud it was last night

            I'm still waiting for the manual. still. wyomingben.com = awful.

            also, as an aside--- the heat from the pipes has changed: (from left to right) the 1 and 2 pipes are now scorching hot, but 3 and 4 are chilly. go figure.

            Comment

              #7
              You have definite carb problems, take em off and clean em up. That, and your petcock sounds like it needs a rebuild too.

              Comment

                #8
                The ignition matched pairs of pipes are the 1,4 and the 2,3. Since your 1,2 are hot and 3,4 are cold, it isnt an ignition problem. It almost has to be a carb problem. It appears your 1,2 cylinders are running lean and your 3,4
                cylinders are between barely to not running. I think a carb cleaning and synch is mandatory. I dont think the bike will run decent without doing that.

                Uhhh, that little "pop" in the pipe wake you up a tad? :-) :-) :-)

                Earl

                Originally posted by m0unds
                Yeah, i went outside and tried starting it again. It will ONLY start and run on "prime" now. I couldn't get it to go with the "on" or "reserve" settings on the petcock.

                i let it warm while it was doing that, and sure enough, it backfired like a mother again. this time I had earplugs in...cuz i'm still reeling from how loud it was last night

                I'm still waiting for the manual. still. wyomingben.com = awful.

                also, as an aside--- the heat from the pipes has changed: (from left to right) the 1 and 2 pipes are now scorching hot, but 3 and 4 are chilly. go figure.
                Komorebi-The light filtering through the trees.

                I would rather sit on a pumpkin and have it all to myself than be crowded on a velvet cushion. H.D.T.

                Comment

                  #9
                  haha, yeah. woken up, definitely.

                  should i replace the float bowl gaskets, too?
                  i found the o-ring kits from Mr. Barr, they're $16 for the VM series carbs.. 32 o-rings. i assume that's for 4 carbs, as it seems hard to believe one carb would have 32 seals

                  i'll look into the petcock rebuild kit

                  gracias, gentlemen

                  Comment

                    #10
                    Originally posted by m0unds
                    should i replace the float bowl gaskets, too?
                    Only if you need to, if you can reuse them and not have leaks, go for it. I've never had to replace them.

                    Comment

                      #11
                      Originally posted by lhanscom
                      Only if you need to, if you can reuse them and not have leaks, go for it. I've never had to replace them.

                      are they rubber gaskets?

                      Comment

                        #12
                        Originally posted by m0unds
                        Originally posted by lhanscom
                        Only if you need to, if you can reuse them and not have leaks, go for it. I've never had to replace them.

                        are they rubber gaskets?
                        You know, I'm not sure, I think they were the card board like gasket material, all of mine have been stuck to the float bowl, so I've just left them alone.

                        Comment

                          #13
                          yeah, that's kinda what i thought they were--cardboardish

                          also-- looks like the whole petcock assy. is still available, for $70 heh

                          any better a place to get one, or the kit to rebuild one?

                          Comment

                            #14
                            Originally posted by m0unds
                            yeah, that's kinda what i thought they were--cardboardish

                            also-- looks like the whole petcock assy. is still available, for $70 heh

                            any better a place to get one, or the kit to rebuild one?
                            It sounds like the petcock problem is the diaphram leaking. I'm not sure which style petcock you have, but if you're careful you can repair them sometimes. Other then that, try a junk yard.

                            Comment

                              #15
                              is it possible to convert the bike to a mechanical petcock vs. a vacuum operated one?

                              i guess i'll have to wait until i get my manual to see if i can repair the petcock-- maybe it'll have an exploded view that i can compare. maybe.

                              Comment

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