Carb hose and other sundry questions

Started by bdfinally, April 04, 2015, 09:53:24 AM

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bdfinally

Yup, I couldn't wrap my head around that idea. But then he couldn't figure out why I had wanted the carbs rebuilt initially if it was running "OK"
The tyranny of the rat race is not yet final...HST

ducpainter

Quote from: bdfinally on May 12, 2015, 11:54:10 AM
Yup, I couldn't wrap my head around that idea. But then he couldn't figure out why I had wanted the carbs rebuilt initially if it was running "OK"
That's not an unreasonable question.

Why did you have them rebuilt?
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 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
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bdfinally

They hadn't been cracked open in 14 years/32,000+ miles
The tyranny of the rat race is not yet final...HST

ducpainter

Quote from: bdfinally on May 12, 2015, 12:19:14 PM
They hadn't been cracked open in 14 years/32,000+ miles
They needed needle jet tubes then.

You should see improved fuel mileage once you get it back on the road.

If it's been a lot of miles since a valve adjust, they always run smoother if the closers are set to the as close as possible to 0 spec, it might not be a bad idea to let them set the bike up.
"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."



bdfinally

That's what I figured, it was just time to freshen everything up and why I rebuilt the pump and replaced the fuel and vacuum lines at the same time. Everything worked "ok," but why wait for a problem to surface.

Bike only has maybe 2000 miles on it since I did the valves 2 years ago.
The tyranny of the rat race is not yet final...HST

ducpainter

#35
Quote from: bdfinally on May 12, 2015, 12:58:59 PM
That's what I figured, it was just time to freshen everything up and why I rebuilt the pump and replaced the fuel and vacuum lines at the same time. Everything worked "ok," but why wait for a problem to surface.

Bike only has maybe 2000 miles on it since I did the valves 2 years ago.
Just have them synch the carbs....

or buy one of these...
http://www.amazon.com/Motion-Pro-08-0411-Syncpro-Carburetor/dp/B000K7JHWA

and do it yourself.
"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."



bdfinally

I think I'm done with air/fuel for awhile. ;)

Steering bearings are next when hot & nasty sets in.
The tyranny of the rat race is not yet final...HST

memper

How could a shop possibly sync CV carbs while off the bike? A sync is dependent on vacuum, no?
"Calling a bikini fairing on a monster a fairing is like calliing a girl in an actual bikini proper work attire....unless shes a stripper." -He Man

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koko64

#38
Thats one way. Its the best way (manometer), letting you synch over a rev range. Doing it with the carbs off the bike gives you the off idle synch which on some bikes is the best you can do. I sometimes do it with carbs off the bike to get in the ball park and finish with the manometer on the bike.
2015 Scrambler 800

bdfinally

and the saga continues! Took it back to the shop and they synched, adjusted mixture and speed. Ran fine the 2 days I rode to work. Just took it out on the highway and it's sputtering and gasping at speed. Any particular things I can look for to solve that?

You know I've been considering FCR39's for the last few years, if I'd known this was going to run over $500, I'd had probably just contacted Chris for a pair.
The tyranny of the rat race is not yet final...HST

ducpainter

Problems at speed are typically fuel delivery which can be pump or venting.

It can also be an issue with the slides not lifting which can also be caused by a few things.
"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."



Nibor

I had some intermittent problems with fuel starving/flooding/something on the 750. basically when I was giving it stick, especially over $1.20, for a while, it would stutter and die. if I caught it quick and rolled off I could drop to 60 and limp for a while, otherwise i'd be on the side of the road for 10min before starting up again.

no idea what it was, but i've got some FCR39's for the rebuild  [Dolph]

bdfinally

Quote from: ducpainter on May 23, 2015, 08:26:07 AM
Problems at speed are typically fuel delivery which can be pump or venting.

It can also be an issue with the slides not lifting which can also be caused by a few things.

Well I  rebuilt the pump (http://www.ducatimonsterforum.org/index.php?topic=70457.msg1301826#msg1301826), but that was awfully straightforward, don't know where I could have gone wrong on that. Are you talking about the tank vent or off the carbs?
The tyranny of the rat race is not yet final...HST

ducpainter

I was thinking tank vent.

Did you look at a plug by any chance?
"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."



bdfinally

#44
Pulled both, look like the cup of coffee with creamer in I'm having. What's aggravating is they wrote on the back of work order that they test rode it.
The tyranny of the rat race is not yet final...HST