cbr 1000f snatchy on/off throttle response when around town

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cbr 1000f snatchy on/off throttle response when around town

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cbr 1000f snatchy on/off throttle response when around ... - 5/8/2008 3:00:30 AM

greatwhitepom

Posts: 4
Joined: 5/8/2008
Status: offline

i was wondering if anyone with a cbr 1000f had a similar experience with their motorbike. I made the proper adjustment to the chain, thinking it was the symptom of a loose chain,but has not corrected the problem. When commuting around town at low speed, or coming out of a slow turn, i find the bike very snatchy, if that is the right term. I was wondering if this is normal for this model, or if anything can be done to remedy the problem.

Post #: 1

RE: cbr 1000f snatchy on/off throttle response when aro... - 5/8/2008 5:09:37 AM

Shadow1

Posts: 2701
Joined: 12/21/2007
From: Pinetown, South Africa
Status: offline

Welcome to the Forum !
Could be a number of things......
* Worn chain and sprockets, or poor chain lube
* carbs out of adjustment
Any other symptoms - Poor starting/idling.......?
Is that snatchy as in starts and stops in the corner ? Jerks before it pulls ?
Stutters on throttle opening ?
Try and be a bit more specific, Greatwhitepom......

_____________________________

Good judgement comes from experience - experience comes from bad judgement...

(in reply to greatwhitepom)

Post #: 2

RE: cbr 1000f snatchy on/off throttle response when aro... - 5/8/2008 5:24:51 AM

greatwhitepom

Posts: 4
Joined: 5/8/2008
Status: offline

hello shadow 1, thanks for the interest.I bought this lovely '95 cbr1000f about two months ago,rides like a dream.Mechanically everything seems very well maintained.The sprockets look new, the chain ispretty new,no tight spots or loose spots and at the beginning of the adjustment marks,and well lubed.It starts first pop every time and hasnt missed once on my weekend rides,but the problem seems to be at slow speeds.When the throttle is backed off for a slow corner or roundabout etc ,it seems to lurch abit as acceleration is applied.feels like slack is being taken up somewhere.Never had this with any of my other bikes ,and thought perhaps it was trait of the cbr.

(in reply to Shadow1)

Post #: 3

RE: cbr 1000f snatchy on/off throttle response when aro... - 5/8/2008 6:13:05 AM

kdjack25

Posts: 117
Joined: 10/19/2007
Status: offline

Another welcome from me also , i'm not as mechanicly inclined as most folks here but by the end of the day you'll have your answer for sure, great bunch of guys here, helpful and full of it(knowledge).

(in reply to greatwhitepom)

Post #: 4

RE: cbr 1000f snatchy on/off throttle response when aro... - 5/8/2008 6:56:12 AM

Shadow1

Posts: 2701
Joined: 12/21/2007
From: Pinetown, South Africa
Status: offline

No, not a trait of the CBR as far as I'm aware (mine doesn't do it, mine just eats reg/rectifiers)

It could be your primary jets are a bit mucky, which would manifest itself at slower speeds, or your air correction jets may need adjusting (21/2 turns out to start with -helluva fiddly job on mine)
Still, wait for the rest of the boys to see the post, I'm sure someone'll be able to pinpoint it.
If you need a manual, download it at:
> http://members.iinet.net.au/~cbr/Honda_CBR1000F_Service_Manual.pdf>
OR
http://myweb.tiscali.co.uk/midlife/images/Honda_CBR1000F_Service_Manual.pdf
Hope it works -

(in reply to greatwhitepom)

Post #: 5

RE: cbr 1000f snatchy on/off throttle response when aro... - 5/8/2008 8:46:51 AM

pacojoseph

Posts: 427
Joined: 5/10/2007
From: Philly, PA USA
Status: offline

I'd try a simple fix first. Throw some commercial auto carb cleaner in your gas tank, maybe half a container should do, and see if that helps. Doing this cleared up a similar problem I had with an old V65 Sabre that I had at the time just purchased- and very quickly too. Besides, it's very easy to do and shouldn't cost more than a buck or two.

(in reply to Shadow1)

Post #: 6

RE: cbr 1000f snatchy on/off throttle response when aro... - 5/8/2008 10:28:17 AM

GILL

Posts: 450
Joined: 1/15/2008
From: Halifax, Nova Scotia Canada
Status: offline

SeaFoam seems to work really well. Perhaps your rev's are too low. The cane is a heavy bike and sometime I have to feather the clutch with a higher RPM a bit on the slow turns to smooth out the power. (plus it hides my CC noise a bit)

(in reply to pacojoseph)

Post #: 7

RE: cbr 1000f snatchy on/off throttle response when aro... - 5/8/2008 11:01:58 AM

Shadow1

Posts: 2701
Joined: 12/21/2007
From: Pinetown, South Africa
Status: offline

I don't have to do anything like that, Gill, and my carbs aren't even properly balanced........your problem is camchain stretch.......messes with the valve timing.

(in reply to GILL)

Post #: 8

RE: cbr 1000f snatchy on/off throttle response when aro... - 5/8/2008 11:13:43 AM

GILL

Posts: 450
Joined: 1/15/2008
From: Halifax, Nova Scotia Canada
Status: offline

Damn Chain.......

(in reply to Shadow1)

Post #: 9

RE: cbr 1000f snatchy on/off throttle response when aro... - 5/8/2008 12:48:02 PM

Dean0

Posts: 94
Joined: 9/22/2006
From: Preston, UK
Status: offline

The last guy I knew of with this problem had a blackbird ( Carb model )

He replaced his chain & sprockets, had the bike set up on a rolling road etc etc

Turned out to be worn cush drive rubbers.

(in reply to GILL)

Post #: 10

RE: cbr 1000f snatchy on/off throttle response when aro... - 5/8/2008 1:27:44 PM

mr303

Posts: 5
Joined: 4/15/2008
From: Wellington, New Zealand
Status: offline

I would guess that its the drive chain or the cush drive rubbers. Mine was doing the same thing and it turned out to be the chain was too slack, the spec is 15 to 25mm at the mid point on the lower run of the chain which is fairly tight. My bike would clunk into first gear when standing still and as you have found will feel sloppy on and off the throttle at slow speeds.

< Message edited by mr303 -- 5/8/2008 6:07:52 PM >

(in reply to Dean0)

Post #: 11

RE: cbr 1000f snatchy on/off throttle response when aro... - 5/8/2008 1:47:47 PM

GILL

Posts: 450
Joined: 1/15/2008
From: Halifax, Nova Scotia Canada
Status: offline

Sorry guys, its the cam chain that haunts me. I wish it were just the drive chain

(in reply to mr303)

Post #: 12

RE: cbr 1000f snatchy on/off throttle response when aro... - 5/8/2008 2:00:23 PM

MarkR

Posts: 854
Joined: 8/20/2005
From: Gold Coast, Australia
Status: offline

I find if the revs are really low (under 1k) in gear, the bike is very rough, this happens when traffic is hardly moving.
No sure if this is what you mean, GILL might have said this one

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Post #: 13

RE: cbr 1000f snatchy on/off throttle response when aro... - 5/8/2008 8:39:34 PM

Shadow1

Posts: 2701
Joined: 12/21/2007
From: Pinetown, South Africa
Status: offline

Hello Mr303 and welcome to the Forum !

Cush drive rubbers - hmmmm, there's a thought. Mine clunks into gear from time to time, but slow corners aren't a problem, unless I've just got used to it. Good thinking.
Visit often

(in reply to mr303)

Post #: 14

RE: cbr 1000f snatchy on/off throttle response when aro... - 5/8/2008 10:23:29 PM

Shadow1

Posts: 2701
Joined: 12/21/2007
From: Pinetown, South Africa
Status: offline

You shouldn't be running the bike under 1000RPM, MarkR, the engine's not designed for it. Take your idle up a bit to say 1150, and the roughness wil disappear. Labouring a Hurricane engine below 1000RPM IS NOT GOOD FOR THE ENGINE........