Setting idle

[motojoe]

Hello to all.
I have a '04 RR with 25.6K, in a questionalbe state of tune. I have posted about recent surging issues recently and am still working to correct. I have recently found that when adjusting my idle I have a difficlut time keeping the manometer from floating. As I adjust it is now apparent that the BBS on right side is completely bottomed out while the left side is open less than a 1/4 turn. The idle when warmed up does stay at about 1100 rpm, though it bounces a bit.
What could this be indicating. This was not the case last year when things were "normal" at that time the right BBS was out to a 1/4 turn and the left was out just over 1/2 turn. I did remove and clean both BBS earlier this spring. Any insight is welcome. I feel like I'm chasing gohsts.
Also I have checked valves, replaced plugs, new air filter, new sitck coils, Had a dealrship in Indy reset idle and balance TBs. They never mentioned to me that the BBS was bottomed out.
Thanks in advance if you decide to throw our two cents in.
Joe

[jcridge]

I would look at 5 things;

1. Cable adjustment ( zero/zero)
2. Leaks at cylinder intake manifold and or bottom vacuum port plug missing
3. Carbon and gunk in T/B's, screw might be clean but the passages are clogged.
4. How does the bike run other then idle? ( injectors, fuel pressure, etc...)
5. TPS setting

Having the BBS turned in would indicate that you are getting air from an unmetered source, or that you are not getting enough fuel and the only way to off-set that would be to reduce the air. Both create a lean condition, are your sparkplugs white? Lean condition will cause surging...

John

[motojoe]

Thanks John,
I will continue to check things out.
Would it be advisable to take the throttle bodies off and clean them, or can that be done with out removing them from the bike?

Joe

[motojoe]

I forgot to mention that the bike runs fairly good once warmed up. I have no clue how to check the TPS. If possible could someone provide a link to checking and or adjusting the TPS.
Thanks again.

Joe

[R1150Rclean]

I forgot to mention that the bike runs fairly good once warmed up. I have no clue how to check the TPS. If possible could someone provide a link to checking and or adjusting the TPS.
Thanks again.

Joe

You do not want to touch the TPS, service tech only with the required electronics/tools. If the BBS is bottomed out then you must have a major air leak that seals when things get warm. Have heard the manifolds (between the TB and the head) can get warped and have to be replaced with new ones. Have you checked the TB hose clamps (front/back) to make sure they are tight?

[zeke]

Second on checking the throttle body hose clamps. Also ensure the hose is properly aligned and full connected to the throttle body. I recently discovered that the one of the hose clamps must have become loose or was not fully tightened and the hose actually back of just a touch, but it was enough to mess things up. Good luck!

[jcridge]

Joe,

Sparkplugs ( primary) will tell the story of what is really going on, what color are they?

You want to know what the problem is before tearing into anything, you could just end up making matters worse or mask the real issue.

You should pull the T/B's off once you have determined that you do not have a leak at the intakes, they can be cleaned much easier off the bike. This would also be a good time to replace the intakes.

You will need to check and set the T/B clearance at that point, then when you install the cables it will be an easy cable adjustment.

TPS should be the last resort and as mentioned, left to the dealer.

I doubt the TPS is the problem, most if not all poor performance issues are self inflicted and can be traced back to a starting point at which the original issue was noticed. ( stickcoils, that would indicate to me that you had poor performance at some point)

What have you found so far?

John

[Ol' Jeffers]

Quote motojoe:".....Had a dealrship in Indy reset idle and balance TBs. They never mentioned to me that the BBS was bottomed out."
That was nice of them! I don't suppose it entered their heads to try to find out why that was the case.
I do hope you manage to find the problem.