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Invisible Problem. (Read 19 times)
tuxedo
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Invisible Problem.
06/08/07 at 16:56:37
 
OK, I don't make a habit of having panicky posts, but this is what the deal is.

I had no mid-range power, lots of bogging.  Bike was already running a bit rich though, so I carefully shaved just a touch off the white spacer.  Re-assembled carb.  

Rode to the gas station, bike sounded like it was running out of gas.  Filled up.  Ran like crap all the way home(less than a half-mile).

Ripped apart, checked to make sure I had sealed the diaphagm properly.  Maybe so, maybe not.  I can assume that since it was popped free after removing the top of the carb that it wasn't.

Now Glenn won't start.  Turn Turn Turn Bang Pop Die.  OVERFLOW.

On a side note, I did remove the side stand switch but think that this in no way weighs in on this issue.

Eerie white whispy smoke comes from the tailpipe whenever attempting to start.  That should help identify the issue, but I have no idea what it means.  Glenn is speaking in code to me today.

Things I've tried:

1.  Idle air adjustment.
2.  Hotter/Colder/Same spark plug.  Plug is nice and black, like I like it.
3.  Re-sealing the vacuum lines for the petc0ck.
4.  Adjusting the float.
5.  Cleaning the slide.


Notes:
1.  Petc0ck is Off/on/reserve.
2.  Tank is full, LOL.
3.  Plugs aren't fouled.
4.  Petc0ck vacuum lines are sealed up like my girlfriend in 11th grade.  (Not girlfriend for long.)
5.  Petc0ck vacuum line WANTS to leak.  But is sealed.
6.  Overflow comes from vent tubes.  
7.  Overflow comes by turning petc0ck on and turning throttle, waiting.
8.  Float needle is clean, not sticking.

Theories anyone?
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I like persons better than principles, and I like persons with no principles better than anything else in the world.

86 Savage
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tuxedo
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Re: Invisible Problem.
Reply #1 - 06/08/07 at 17:05:03
 
Other notes, things I just thought of.

Glenn started and ran fine immediately after re-assembly the first time.  Ran like crap after I got on the road.

Ran like crap UNTIL I gathered some RPMs.  Seemed OKer at midrange.  That leads me to believe it's running fine with the spacer mod.  

The overflowing carb is really the sore point.  I battled this issue for way too long to re-visit it.  I've tried all the things I tried before, and none want to work.
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I like persons better than principles, and I like persons with no principles better than anything else in the world.

86 Savage
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borne2fly
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Re: Invisible Problem.
Reply #2 - 06/08/07 at 17:18:36
 
Overflowing carb, eh? I had a BMW that did that, and a sharp rap on the carb with a plastic screwdriver handle seemed to fix the problem whenever it happened.

You adjusted the floats, but are you sure they're actually floating? A sunken float will definitely cause some of the things you're seeing.

If that's not it, then I'd disconnect the fuel line, drain the float bowl (and visually inspect it for crud), then fill the float bowl from a known clean fuel source and see how it runs then.
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tuxedo
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Re: Invisible Problem.
Reply #3 - 06/08/07 at 18:04:55
 
ok, overflow issue may be solved.  Gonna have to see about getting Glenn started now.

It wasn't a screwdriver thing.  It was a "one float higher than the other" thing.
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I like persons better than principles, and I like persons with no principles better than anything else in the world.

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tuxedo
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Re: Invisible Problem.
Reply #4 - 06/08/07 at 18:56:15
 
OK, overflow's gone.   Cranks a lot, won't start.  Spark, Air, Fuel...we got em.  Still wispy white smoke.
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verslagen1
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Re: Invisible Problem.
Reply #5 - 06/08/07 at 19:19:54
 
unless you mod'd the petc0ck, there's no off.  Usually that's prime.  So that's why it flooded in the off position.

fuel in the vacuum line? = hole in petcock diapham
If you haven't mod'd now's the time.

check crank case for gas
check your plug... wet?
call greg I'm done   Grin
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tuxedo
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Re: Invisible Problem.
Reply #6 - 06/08/07 at 20:43:05
 
what does a crankcase full of gas do?  Symptoms?

Petc0ck is modded.  Plug does have gas on it when I remove it.

Improperly modded petc0ck?
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I like persons better than principles, and I like persons with no principles better than anything else in the world.

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Serowbot
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OK.... so what's the
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Re: Invisible Problem.
Reply #7 - 06/08/07 at 21:43:29
 
Excellent detail in your description!  
Maybe here is the problem?
 " 3.  Re-sealing the vacuum lines for the petc0ck. "
You may be sealing the fuel leak in, instead of stopping it.  Try plugging both the petcock's vacuum tap and the carb's vacuum port with rubber caps and remove the vacuum line completely.
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Ludicrous Speed !... ... Huh...
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tuxedo
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Re: Invisible Problem.
Reply #8 - 06/09/07 at 15:32:01
 
The petc0ck is modified per bobo's how-to.  The vacuum lines are sealed.
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I like persons better than principles, and I like persons with no principles better than anything else in the world.

86 Savage
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barry68v10
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Re: Invisible Problem.
Reply #9 - 06/09/07 at 17:21:03
 
With a marginal amount of gas in the crankcase it will run very similar to forgetting to fill the crankcase with oil.   Sad
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petc0ck mod, white spacer removed, 150 main jet, 12.5" shocks, 16" turnout muff, oil cooler mod, chain conversion, Tkat brace, external fuel filter, fuel screen removed...
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verslagen1
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Re: Invisible Problem.
Reply #10 - 06/09/07 at 17:31:36
 
White smoke indicates flooding, check your plug.
I'd open up the carb and double check it.
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Max_Morley
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Re: Invisible Problem.
Reply #11 - 06/09/07 at 17:54:31
 
If you were rich before, shaving the needle washer raises the needle and makes is richer. Seems backwards but a spring pushes the needle up agains the washer so making it thinner makes it high in the needle jet and richer. Max
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Max at Thumper Acres. '96 Savage bagger, '03 Savage w/Cozy sidecar for wifeni.
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tuxedo
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Re: Invisible Problem.
Reply #12 - 06/10/07 at 07:11:13
 
Also, how do I check the crankcase for gas?
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I like persons better than principles, and I like persons with no principles better than anything else in the world.

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azjay
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Re: Invisible Problem.
Reply #13 - 06/10/07 at 07:22:19
 
check the oil level, smell the oil filler hole
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justin_o_guy
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Re: Invisible Problem.
Reply #14 - 06/10/07 at 09:54:18
 
I have a hard time differentiating some scents/odors. Oil & gas are close enough to make me wonder if I have it right. I would pull the oil filter & let it drip in something & see if it lights easily. I might even take some oil & cut it with a bit O gas to see how it smells & burns. If I wasnt dead sure I would mess with straight oil & compare that to what comes out of the crank case. If you mess with it, you will figure it out.
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