High idle after TB Sync

[Athosch97]

Goodmorning everyone, 2 days ago I went ahead and finally put to use my Carbtune, Adjusted my vaccum and it looked to be fine (it was really off).
The bike has woken up, I really feel the low end way better now and to be honest I even noticed an improvement on the famous snatchy throttle issue, it feels way smoother now. What's concerning me and I need an expert's opinion on this, is the idle rpm, I like to have my idle a bit lower than 1300 I believe it sounds better and it even feels better with the engine braking. My question is would it be okay to go ahead and put the carbtune on again and lower the vacuum in order to achieve lower rpm?

 

[Gary in NJ]

Yamaha set the idle to ensure that oil pressure is maintained. Dropping it lower because you think it sounds cool could cause long term damage.

 

[Athosch97]

Yamaha set the idle to ensure that oil pressure is maintained. Dropping it lower because you think it sounds cool could cause long term damage.

LOL Pretty sure I saw in other threads members talking about setting the idle a bit lower(I remember specifically someone said they have theirs at 1050) thats why I asked fair enough. Thx for the reply

 

[TownsendsFJR1300]

Mines been set at 1,000 for well over a decade and 30,000 miles.

I do use Motul 5100 and have had NO Issues..

It does idle smoother at 1K vs 1,300 and yes engine braking is better.
It's run in SW Florida, 365 and in summer , day time temps usually the low 90s (F)

Also, I'm at sea level and could never get the vacuum to where Yamaha calls for.
As long as all are equal (within 10MM) and you have a good idle, your fine.




22K ago (with BD43 mod):

https://flic.kr/p/LDtUch

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[Athosch97]

Mines been set at 1,000 for well over a decade and 30,000 miles.

Thanks so much for the reply! I will search a little bit more into it see if all is safe and might just do another adjustment getting it closer to 1100. Appreciate it.

 

[TownsendsFJR1300]

I sync at both idle and 4,000 RPMs.

At 4k (max), it helps with vibs lowering them....
(not in the manual)

 

[grahammarsden]

An issue with having the idle too low is that if you throttle off too quickly, the engine can stall.

 

[TownsendsFJR1300]

An issue with having the idle too low is that if you throttle off too quickly, the engine can stall.

That, ^^^, is absolutely NOT true IME of TEN YEARS and 30,000 miles...


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[grahammarsden]

I'm glad you've never had that issue.

On other FZ6 groups I've seen posts from people where their bike has stalled from this and fixed it by raising the idle to the correct level.

 

[TownsendsFJR1300]

I'm glad you've never had that issue.

On other FZ6 groups I've seen posts from people where their bike has stalled from this and fixed it by raising the idle to the correct level.

I've never read or seen it on this forum in 16 years....


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[tuning-forks]

How you engine brake might affect the issue. Pretty hard to stall the engine with clutch out unless at very low speed.

 

[grahammarsden]

I've never read or seen it on this forum in 16 years....


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Tell you what, use the screw under the tank to reduce your idle to about 900, then go out for a ride and let us know what happens.

 

[TownsendsFJR1300]

Tell you what, use the screw under the tank to reduce your idle to about 900, then go out for a ride and let us know what happens.

Why???


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[grahammarsden]

Why???


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You're so unwilling to believe that a low idle can cause stalling because of your "ten years and 30,000 miles" of experience and as you've "not read or seen it on these forums in 16 years", so, if you're so confident, why not turn down the idle and test your hypothesis?

Unless you're worried that you might actually not be correct...

 

[TownsendsFJR1300]

You're so unwilling to believe that a low idle can cause stalling because of your "ten years and 30,000 miles" of experience and as you've "not read or seen it on these forums in 16 years", so, if you're so confident, why not turn down the idle and test your hypothesis?

Unless you're worried that you might actually not be correct...

Seriously?? I think your trolling now, but I'll play-
Now pay attention please,

Why not turn it down to 500, 400, 300??? Duh...

Re-read my post and try to comprehend:
I posted MY EXPERIANCE. It's not a hypothesis. Play the video I posted and pay attention...

Like it or not, mine has run GREAT all this time with a 1000 RPM idle...

Actually, it has NEVER STALLED, (short of rider error) NEVER, (in my 16 years of ownership).



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[grahammarsden]

I'm glad that YOUR experience has been so satisfactory and YOU haven't seen anyone posting that they've had problems.

Please understand that I am saying that OTHERS have had problems, even though you may not be aware of it.

Now if you want to get the last word in, please do so with my blessing.

 

[Athosch97]

So this is my current situation after doing the TB Sync, bike was just fine and this started happening

Bogging on low end rpms and idle is all over the place, only after it does a heatcycle

 

[Gary in NJ]

I wouldn’t classify that idle as being “all over the place”…it’s fairly steady.

The bogging can be a number of things such as a dirty air filter, a misalignment of the airbox or throttle body bank, or even a clogged or sticky fuel injector. Of course anyone one of these items would also result in a hunting idle as well.

 

[grahammarsden]

So this is my current situation after doing the TB Sync, bike was just fine and this started happening

Bogging on low end rpms and idle is all over the place, only after it does a heatcycle

Switch the ignition on and press the Select Button until you see E: 0 which is a digital rev counter.

Start the engine and see what the figures say. Ideally it should be between 1250 and 1350 rpm.

It does sound as if you've got an aftermarket exhaust which I've seen mentioned by other people as a cause of an unsteady idle.

 

[TownsendsFJR1300]

Bogging sounds more like a fueling system issue-specifically the injectors.

That is, IF, all vacuum lines, everything under the tank is connected correctly and not leaking.


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