Idle Ajustment?

[mystic red]

How do you adjust the idle on a K1100? Is it possible? I got mine back together after rehabbing the intake manifolds and it idles a little high now. I thought syncing the throttle bodies would take care of it but if anything it gets higher the closer I get to getting it synced.

[johnny]

i adjust my idle with the choke lever...

sent from johnnys droid

[frankenduck]

You can adjust the cable up at the throttle perch end.  Pull the boot back.

[mystic red]

I adjusted the throttle cable so there is a little free play already. No love.
When syncing the TB #1 is the front most TB, right?

[frankenduck]

Yes, the forward cylinder is number one.  You could use any TB as your reference TB though.

[Scott_]

You sure you don't have a vac leak somewhere. That will give u a high idle.

[frankenduck]

You sure you don't have a vac leak somewhere. That will give u a high idle.

He just replaced the stuff above and below the TBs to fix an air leak.

Mystic Rod: My bikes idle a little fast.  I don't care.

[johnny]

mystic reb...

how many rpms you got on idle... the motoheap idles at 1500 rpms with the choke lever closed...

bye the way... that choke lever is a proficient cruise controller...

j o

[Scott_]

You sure you don't have a vac leak somewhere. That will give u a high idle.

He just replaced the stuff above and below the TBs to fix an air leak.

I know. Still doesn't mean he couldn't have missed something. BTDT

To lower the idle you could turn ALL the brass adj screws in equally.

[mystic red]

You sure you don't have a vac leak somewhere. That will give u a high idle.

You're kidding me, right? That's what started this whole thing. ;)
No it's not that high, maybe 1200 RPMs.
Duck, why do you open the brass screw 1 1/2 turns? The reason I ask is when they are more closed the idle is lower.
#1 is the only one that I can't zero so I am using #4 as a constant. Then 2 and 3 will zero to 4. Don't know why #1 is being a pain in the ass.

Edit: just read the above posts. Missed em earlier. Will check for leak and try the brass screw thing later. Thanks.

[johnny]

mystic reb... the bug has never idled less than 1500 rpm n you know that moe screams like a stump hugging big giant poodle...

j o

[frankenduck]

If you can't synch #1 then you might still have an air leak.  Git yer propane out.

I do one and a half turns because I read it in an Eilenberger post somewhere and he knows more about this stuff than I do.

[Scott_]

Another thought came to my mind.
When was the last time you checked your valve clearances?

[frankenduck]

Probably just a burned valve or leaking head gasket.  Nothing to worry about.

[mystic red]

If you can't synch #1 then you might still have an air leak.  Git yer propane out.

I do one and a half turns because I read it in an Eilenberger post somewhere and he knows more about this stuff than I do.

Did the propane. Negative. Used the #4 as a constant, backed out 1 turn which lowered the idle. #3 & #4 synched at about 1 turn out and #1 3 turns out.
Valves were checked about 20K ago, should be good.
They are synched now at the specified turns. Don't know why #1 is out so much but I had a tech do it once a few years ago and he said he had problems also in getting right to specs. What do ya think? Good to go?

[mystic red]

Probably just a burned valve or leaking head gasket.  Nothing to worry about.

Aren't you just a ray of sunshine. ;D

[frankenduck]

Probably just a burned valve or leaking head gasket.  Nothing to worry about.

Aren't you just a ray of sunshine. ;D

Just yanking your chain.  Exhaust valves are subjected to a lot more heat than intake valves

[mystic red]

If you can't synch #1 then you might still have an air leak.  Git yer propane out.

I do one and a half turns because I read it in an Eilenberger post somewhere and he knows more about this stuff than I do.

Did the propane. Negative. Used the #4 as a constant, backed out 1 turn which lowered the idle. #3 & #4 synched at about 1 turn out and #1 3 turns out.
Valves were checked about 20K ago, should be good.
They are synched now at the specified turns. Don't know why #1 is out so much but I had a tech do it once a few years ago and he said he had problems also in getting right to specs. What do ya think? Good to go?

[johnny]

dude... get aaa with the 200 mile tow n ride it till it wont move...

j o

[mystic red]

From the BMWOA guru:

One turn is enough and three not excessive provided they are balanced and the idle is acceptable. Number 1 out three turns is a sign that #1 draws a bit less air than the other three. Valve stem/head deposits maybe. Nothing to worry about but check it again in 5K miles or so (or whenever) to see what is changing if anything.
__________________
Paul Glaves - "Big Bend", Texas U.S.A
"The greatest challenge to any thinker is stating the problem in a way that will allow a solution." - Bertrand Russell
http://www.bigbend.net/users/glaves

So I'll take our guru's advise and "ride it till it won't move."

[frankenduck]

If Glaves says one is enough then that's good enough for me.

You might want to take #1 out and see if it's dirty.  They just screw right out and right back in.  Not a bad idea to clean all of them while you're at it.  While you have them out you can polish their tops with a Dremel to make them all shiny. 8)

[mystic red]

If Glaves says one is enough then that's good enough for me.

You might want to take #1 out and see if it's dirty.  They just screw right out and right back in.  Not a bad idea to clean all of them while you're at it.  While you have them out you can polish their tops with a Dremel to make them all shiny. 8)

Good idea, I'll check them out.

[Scott_]

MR, if you say that your previous mechanic also commented on having troubles with #1 the same as you are, almost sounds to me like a butterfly adjustment could improve the situation.
You know the painted screws your "not supposed" to touch.

[mystic red]

MR, if you say that your previous mechanic also commented on having troubles with #1 the same as you are, almost sounds to me like a butterfly adjustment could improve the situation.
You know the painted screws your "not supposed" to touch.

Hi Scott, yea Clymers says to throw your $800 plus throttle assembly away if you have touch these. ;D
Got a link to the procedure handy?

[Scott_]

I'll take a look on my other computer, but I think I have a pdf on it somewhere. I also think I sent Drake a copy of it a while back.

It had been posted on IBMWR a number of years ago but was removed.