carb settings help

[SWEET_Z]

I installed a full hindle exhaust on my bike last week along with a factory config .10 jet kit. I havn't been able to get the carbs set just right. I know I need to sync the carbs but that wont fix these problems right? If anyone has some insight on this it'd be a great help.

No amount of tinkering with the mixture screws made the cold symptoms go away, only made warm worse or better. I think it may be the floats are set wrong but thats just a guess.

Symptoms when cold:
-bike starts up fine with full choke
-bike used to rev to 2-3.5k while warming and choke engaged. Now It stays below 1.5k with choke engage.
-If choke is closed before fully warmed (140 degrees) rpms drop below idle or sputters and dies

Symptoms when warm:
-rough idle
-mid range feels strong and smooth
-high rpms feel good but i don't really have the facilities to test this out on the street. Just the butt dyno.

THANKS!

[Buddhaman]

Originally posted by SWEET_Z
I havn't been able to get the carbs set just right. I know I need to sync the carbs but that wont fix these problems right?

Jetting your bike and not syncing the carbs is a no-no . Now get go get that done and your bike should ride fine and you can have a .

[SWEET_Z]

So THIS is what I need to do it myself right?

[hohum]

If you really like dealing with toxic mercury, yeah.

Or, for a much better tool thats more accurate and safer, you could get one of <a href="http://www.carbtune.com">these</a>. I have one on order right now, used one in my buddy's garage, its a GREAT tool, he swears by it even over the expensive digital vacuum guages.

Cheers,
Chris

[SWEET_Z]

Originally posted by hohum
If you really like dealing with toxic mercury, yeah.

I put that stuff on my cheerios!

[Buddhaman]

Originally posted by hohum
If you really like dealing with toxic mercury, yeah.

Or, for a much better tool thats more accurate and safer, you could get one of <a href="http://www.carbtune.com">these</a>. I have one on order right now, used one in my buddy's garage, its a GREAT tool, he swears by it even over the expensive digital vacuum guages.

Cheers,
Chris

[stoinkythepig]

Maybe you have a vacuum leak. They are most obvious at idle and less of a problem at larger throttle openings. If you can't get the mixture screws out enough to make the bike idle right, it sure sounds like excess air to me.

[hohum]

Originally posted by stoinkythepig
Maybe you have a vacuum leak.

Which would be quite quickly revealed when you hook up the vacuum gauges (of whichever variety) and one carb was at drastically lower vacuum, no?

Cheers,
Chris

[SWEET_Z]

Yeh thats a possibility too. It seems to idle ok once warmed though. I think that ussually is a symptom of a lean settings.

Anyone have a set of vacuum guages and want to make a quick few bucks?

[stoinkythepig]

Originally posted by hohum
Which would be quite quickly revealed when you hook up the vacuum gauges (of whichever variety) and one carb was at drastically lower vacuum, no?

Cheers,
Chris

Not if it's upstream of the sync points

Edit: scratch that...