New bike... Power concern...

[cbr_chick_nh]

Looking for some advice... I picked up a new 09 CBR1000rr this spring and just hit the 600 mile mark.

Twice I have noticed a "lag"... Both times I was rolling up to a stop, clutch completely engaged, braking, then rolled through without coming to a complete stop. Once I started going it felt like I was in 2nd gear, so both times I pulled the clutch and went to shift down, only to realize I was really in 1st as I thought... So I called the dealer and tried explaining my problem and they didn't seem to understand what I was saying. So... I am not new to this and don't think it's operation error. I really had to crank on the throttle to get the bike going, once it went it was fine...

Thoughts?

[butcher bergs]

Sounds like you are way down in the rev range.

Get that motor spinning above mid-range and your opinion should change.

[xrocket21]

fouled plug maybe?

[fineout]

clutch slipping?

[korndogg]

Clutch would be pretty obvious.
As you know, what you describe is extremely difficult to troubleshoot.
How's your gas mileage?

A PC3 and a dyno tune would certainly clean up the maps, and would likely expose any issues with the bike..

[stoinkythepig]

Slip the clutch a bit so it revs and it'll feel normal. Opening up the throttle hard at really low revs is just bogging it down.

[cbr_chick_nh]

Clutch would be pretty obvious.
As you know, what you describe is extremely difficult to troubleshoot.
How's your gas mileage?

A PC3 and a dyno tune would certainly clean up the maps, and would likely expose any issues with the bike..

I know it's a hard one, I could tell by talking to the service dept at Nault's.
My gas mileage averages around 30mpg (not sure what it's suppose to be).

I may start with a PC and dyno, then see..,

[cbr_chick_nh]

This has only happened twice and felt very wrong... I really don't think it's something I'm doing...

[korndogg]

30MPG is low unless you're really romping on it hard or driving at strange RPMs.

What RPM do you suppose you were at when these incidents occurred? 4k? 2k?

If you have an injector that's hanging open you'd get poor gas mileage and you could have pretty bad stumbles at lower RPM.

[Awesome]

This has only happened twice and felt very wrong... I really don't think it's something I'm doing...

It's likely something you're doing. But anyways, if they bike sat for 2 years with gas in it, you can run cleaner through it in case of gumming/water in the lines and injectors, you can also check the airbox for animal nests. Naults is worthless for troubleshooting, and service.

[Awesome]

30MPG is low unless you're really romping on it hard or driving at strange RPMs.

What RPM do you suppose you were at when these incidents occurred? 4k? 2k?

If you have an injector that's hanging open you'd get poor gas mileage and you could have pretty bad stumbles at lower RPM.

30 is right on. Romping on it you'll get 5-7

[DuncanMoto]

Revs too low.
It's not a twin.

[cbr_chick_nh]

It's likely something you're doing. But anyways, if they bike sat for 2 years with gas in it, you can run cleaner through it in case of gumming/water in the lines and injectors, you can also check the airbox for animal nests. Naults is worthless for troubleshooting, and service.

Dammit... I Really can't figure it out. It's only happened twice. If I'm doing something what do u think it is? Id like to prevent it from happening again.

They told me when I bought it that it had been dry but I obviously no Proof. If Nault's sucks, where should I go?

[cbr_chick_nh]

30MPG is low unless you're really romping on it hard or driving at strange RPMs.

What RPM do you suppose you were at when these incidents occurred? 4k? 2k?

If you have an injector that's hanging open you'd get poor gas mileage and you could have pretty bad stumbles at lower RPM.

I basically was coming from a near complete stop, I was going just fast enough to not have to put a foot down... So I was starting at low idle.

[dudutzu]

I use to get 40+ mpg on the same bike commuting
and my guess is also too low in the rev range, that thing is fast and has power everywhere in the range, well above 4k rpms

[butcher bergs]

I basically was coming from a near complete stop, I was going just fast enough to not have to put a foot down... So I was starting at low idle.

You sure you wanna throw a PC and a map at it? Sounds more and more like some clutch action would solve your problem.

[Awesome]

I basically was coming from a near complete stop, I was going just fast enough to not have to put a foot down... So I was starting at low idle.

The bike idles at 8mph with the clutch out, if you're going slower than 20 with no clutch and turn the gas, it's going to stumble, they're built to run at 12,000 not 2,000.

[cbr_chick_nh]

Well I can deal with operator error easier than the bike having an issue... Guess I will just give it more time...

[oVTo]

It's mad at you for not taking it to the track.

[Dragginazz]

My bike runs like shit down low pretty much all the time, it just does not like anything less than 2000RPM. Been like that since day 1. It just bogs kinda, not smooth at all leaving the line and it's frustrating, especially if the water temp is over 200. So now I just launch the bastard when ever posible! seems to fix the problem every time!

Congrats on the new bike BTW!

[CBR929RE]

I basically was coming from a near complete stop, I was going just fast enough to not have to put a foot down... So I was starting at low idle.

yup its just as others have said. at such a low speed and rpm you have to open the throttle really really slowly to keep it from stumbling or use some clutch. pretty much true for any inline4 sportbike.

[BluGixxer]

The bike idles at 8mph with the clutch out, if you're going slower than 20 with no clutch and turn the gas, it's going to stumble, they're built to run at 12,000 not 2,000.

OE
Listen to this guy. Your looking for something that probably isn't there.
600 miles, not even close to being broken in, and even when it is, most likley you still won't get any power at that low of a rpm. I'm not familiar with your year bike, but most are similiar to the fact they have no pulling power below 3500ISH rpm.
My bike older and smaller, doesn't do much untill 4k on the nose and then 7200 to redline is the hang on power.
On another note

[korndogg]

30 is right on. Romping on it you'll get 5-7

Commuting on said bike you should get about 40. Even driving fairly aggressively on the street I get 35mpg.

[butcher bergs]

Commuting on said bike you should get about 40. Even driving fairly aggressively on the street I get 35mpg.

The bike in question has 600 miles on it. Unless that engine gets flogged for a bit, it's not going to see full MPG potential for another 1000-ish miles.

30 is not out of the realm of possibility for such a new machine, that and lugging the engine doesn't help matters.

Just my .02

[Danz19899]

MPG varies wildly by the bike and type or riding.

my first bike carb 08 zzr600 got over 5090% of the time unless I was romping on it then it got 45

my new 09 zx6r might get 45 if I baby it which i never do so i average 35-40mpg. Have gotten it down to 28mpg a few times on more "spirited rides"

So i bet your mileage is just about right.

Definitely agree with the others I4's suck at low rpm. Your lucky the damn thing went anywhere mine probably would have told me to go fuck myself lol. Just slip the clutch at those speeds and you will be fine