Run away throttle?

Started by Porsche Monkey, February 08, 2012, 06:20:23 PM

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ducpainter

Quote from: Porsche Monkey on March 15, 2012, 06:19:53 AM
Ill get some ordered then and try that.  While I'm waiting for them to come in Ill probably go down a notch on them and see if it changes anything. 
The problem with that is at idle one notch won't change much.

If you're having a part throttle issue it might.
"Once you accept that a child on the autistic spectrum experiences the world in
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 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
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Porsche Monkey

Yeah I know what your getting at, it does backfire at low throttle and off throttle settings.  As much as I want to believe it is a lean condition, it was flooding out yesterday. 
Quote from: bobspapa on July 18, 2009, 04:40:31 PM
if I had a vagina...I'd never leave the house


ducpainter

Quote from: Porsche Monkey on March 15, 2012, 07:04:10 AM
Yeah I know what your getting at, it does backfire at low throttle and off throttle settings.  As much as I want to believe it is a lean condition, it was flooding out yesterday. 
I've yet to see a lean condition foul a plug. 

I suppose there's a first time for everything.;D
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."



Porsche Monkey

Quote from: bobspapa on July 18, 2009, 04:40:31 PM
if I had a vagina...I'd never leave the house


Speeddog

When you had the carbs open, did you replace the o-rings on the float needle valve?
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Porsche Monkey

Where the float assembly goes into the carb body? Yes I did.
Quote from: bobspapa on July 18, 2009, 04:40:31 PM
if I had a vagina...I'd never leave the house


Porsche Monkey

Okay, so the spark plug on the horizontal cylinder took a dump.  Its a new plug but when I tried starting it this evening it was completely dead.  Popped in another plug and it started hitting on both again.  It still backfires but not as bad as before.  The throttle will also still run away but maybe to 3k instead of 5k.  I rode it up and down the street a few times and every once in a while the bike would not return to idle when coasting to a stop.  I went looking for vacuum leaks again and found none.  The throttle is definetly against the stop when it raises up.  In order to get this to go away I have to lower the idle way low, and then the oil pressure light flickers.  Do these carbs wear out?  Does the main shaft wear out or something similar to that? 

Either way, I rode it in to work today.  Put a few gallons of fuel in it and got about 5 miles of riding in.  It did okay although it did cough and backfire a few times.  Im going to attempt to put some miles on it this weekend with the hopes that it will clear out and maybe start running better.  Wish me luck. 
Quote from: bobspapa on July 18, 2009, 04:40:31 PM
if I had a vagina...I'd never leave the house


ducpainter

#37
You might want to check the o-rings on the main jets.

They have been known to split.

As far as the carbs wearing out, I kind of doubt it unless you have 11ty billion miles on it.

also...do you have the vacuum petcock still installed? I think that connects to the horizontal manifold. If it took a dump it could put fuel into the manifold.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."



Porsche Monkey

As many times as I've been into the carbs recently, I don't recall seeing o-rings on the mains.  Ill check again. 
Quote from: bobspapa on July 18, 2009, 04:40:31 PM
if I had a vagina...I'd never leave the house


ducpainter

#39
Quote from: Porsche Monkey on March 16, 2012, 07:15:38 AM
As many times as I've been into the carbs recently, I don't recall seeing o-rings on the mains.  Ill check again.  
They may be on the needle jets, but I think I recall them on the mains.

Let me look at the picture from my jet kit...brb.

definitely on the mains...
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."