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Author Topic: is this normal?  (Read 8414 times)

Offline liverpool1208

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is this normal?
« on: May 08, 2015, 05:06:24 PM »
Hi please take a look at the video i have uploaded... I noticed that when i rev the bike, it sometimes hits up till only 8-9 and sometimes till 11. Is this normal? My bike shop mechanic changed the fuel pump and said he's not sure what the problem could be.. any help here?

https://www.youtube.com/watch?v=9qb_8RbPXJQ

bike is hayabusa 07 . 2nd hand purchased from a bike shop. fuel pump was changed 2 days ago. bike is in stock except for yoshi slip on exhaust.
« Last Edit: May 08, 2015, 05:08:26 PM by liverpool1208 »
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Offline Sport

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Re: is this normal?
« Reply #1 on: May 08, 2015, 05:35:25 PM »
Doesn't sound right to me.  My 06 stocker runs up to redline instantly every time.  I have 53,000 on it.
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Offline liverpool1208

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Re: is this normal?
« Reply #2 on: May 08, 2015, 05:43:18 PM »
This is happening even after changing the fuel pump. My bike is at about 93,000. So what could be the problem?
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Offline Stainless1

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Re: is this normal?
« Reply #3 on: May 08, 2015, 08:44:38 PM »
If you are trying to blow it up you are on the right path.   :tu:  keep doing that...  :hys:
 how does it ride when not free revving the motor.  Is there a problem or did you just want to see it hit the red area
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Offline liverpool1208

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Re: is this normal?
« Reply #4 on: May 08, 2015, 09:19:01 PM »
no i'm not trying to blow it up.. i'm having issues with the rpm hitting 11k. See on the video the first rev... i was only able to go up till 9k and it was struggling to go any higher... This happens sometimes. That's why i want to know if this is normal? I just recently changed the fuel pump..
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Offline liverpool1208

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Re: is this normal?
« Reply #5 on: May 08, 2015, 09:20:41 PM »
it does not go up till the red zone at times that is the issue i'm facing now... as i'm not able to go above 240kph. The bike struggles to go any higher than that...
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Offline Stainless1

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Re: is this normal?
« Reply #6 on: May 08, 2015, 10:03:04 PM »
OK, I'll bite, why was the fuel pump changed... is/was the bike throwing any codes, did your mechanic put it in dealer mode to check it.  Is the ECU stock or has it been hacked.  Is it in limp mode.  Is this a European bike that is restricted.
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Offline Ghost-Geezer

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Re: is this normal?
« Reply #7 on: May 09, 2015, 03:11:45 AM »
Quote from: Stainless1 on May 08, 2015, 10:03:04 PM
OK, I'll bite, why was the fuel pump changed... is/was the bike throwing any codes, did your mechanic put it in dealer mode to check it.  Is the ECU stock or has it been hacked.  Is it in limp mode.  Is this a European bike that is restricted.

Is the air cleaner in good shape?  Has it been over-oiled?
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Offline TT

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Re: is this normal?
« Reply #8 on: May 09, 2015, 09:51:35 AM »
 :tu: :tu: :tu: :tu:
Quote from: Stainless1 on May 08, 2015, 08:44:38 PM
If you are trying to blow it up you are on the right path.   :tu:  keep doing that...  :hys:
 how does it ride when not free revving the motor.  Is there a problem or did you just want to see it hit the red area
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Offline Ghost-Geezer

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Re: is this normal?
« Reply #9 on: May 09, 2015, 11:36:39 AM »
Quote from: TT on May 09, 2015, 09:51:35 AM
:tu: :tu: :tu: :tu:
Quote from: Stainless1 on May 08, 2015, 08:44:38 PM
If you are trying to blow it up you are on the right path.   :tu:  keep doing that...  :hys:
 how does it ride when not free revving the motor.  Is there a problem or did you just want to see it hit the red area

Agreed, buzzin' these motors like that without them being under load, i.e. in the wind or on a dyno is just asking for an ass-whippin'.
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Offline Stainless1

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Re: is this normal?
« Reply #10 on: May 10, 2015, 09:01:08 AM »
OK, lets try a test, will it pull the red line in 3rd?  4th?  5th?  If your problem is only in 5th and 6th, you might want to work on your tuck  :shock:
Answer some of the questions that have been asked
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Offline Rocketgeezer

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Re: is this normal?
« Reply #11 on: May 10, 2015, 03:09:10 PM »
Quote from: liverpool1208 on May 08, 2015, 09:20:41 PM
it does not go up till the red zone at times that is the issue i'm facing now... as i'm not able to go above 240kph. The bike struggles to go any higher than that...
were you seriously sitting there in out of gear, revving the piss out of it just to see if it hits redline??? if so you deserve any shit you get, if not, you need get a little more specific as to exactly when this is happening, diagnosing something like this using advice from here and there is tough, unless you get lucky but I wiil say if you are in the habit of revving this shit out of it while sitting still your valve springs at least, are probably toast
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Offline sportbikeryder

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Re: is this normal?
« Reply #12 on: May 10, 2015, 04:14:23 PM »
Could be an issue with the can sensor, or if the bike really has high mileage/km on it and still has the stock can chain, it may be stretched beyond the limits of the tensioner, or the guides worn enough to have the intake can beyond the usable range for the can sensor.

As far as free reccinf the engine and having it blow up, I agree that there is no need for it, but that said , I've never seen a modern inline 4 engine blow up from revving it.
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Offline Ghost-Geezer

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Re: is this normal?
« Reply #13 on: May 10, 2015, 07:49:34 PM »
Quote from: sportbikeryder on May 10, 2015, 04:14:23 PM

As far as free reccinf the engine and having it blow up, I agree that there is no need for it, but that said , I've never seen a modern inline 4 engine blow up from revving it.

That is 'cuz nobody does that crap.  It is no way to diagnose a power issue.   :td:
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