CBR Forum   Classifieds   News   Photo Gallery   Search   Member List   Timeslips   Contact   Sponsors   Register   Login  

No acceleration

  Printable Version
CBR Forum >> Past CBR Models >> CBR 600F >> No acceleration Page: [1]
Login
Message << Older Topic   Newer Topic >>
No acceleration - 8/10/2008 8:49:26 AM   
Slow

 

Posts: 29
Joined: 7/6/2008
Status: offline
bike won''t accelerate over 3500 rpm in any gear. I cleaned both removable jets and the floats, bowls etc. Max speed I could get her up to was 45mph. Please help
Post #: 1
RE: No acceleration - 8/10/2008 9:03:55 AM   
CrAzyHuRRicAne

 

Posts: 30
Joined: 8/16/2007
Status: offline
I think I maybe having the same problem.

(in reply to Slow)
Post #: 2
RE: No acceleration - 8/14/2008 12:50:53 PM   
Slow

 

Posts: 29
Joined: 7/6/2008
Status: offline
The bike accelerates at like 1/8 throttle but anymore than that and she doesn''t move. It runs a little better on choke and can get to like 6k rpm but no higher.

(in reply to CrAzyHuRRicAne)
Post #: 3
RE: No acceleration - 8/15/2008 11:08:21 PM   
bojak

 

Posts: 31
Joined: 8/12/2008
Status: offline
Here are some problems that you might check out:

  • Carb mixture is to lean
  • Clogged fuel line/fuel filter
  • Clogged air filter
  • Improper ignition timing
  • Brakes could be dragging
  • Clutch slipping
  • Impropper valve clearance
  • Muffler could be plugged
  • Weak pulse generator or spark unit
  • Incorrectly gapped spark plugs
  • Weak Ignition coils
  • Carbs improperly adjusted.
  • Or the fuel pump is not working properly
Check the easiest possible problems and work your way to the more difficult ones. Let me know the results and good luck.


_____________________________

My bikes:
1989 Cbr600f Hurricane - Restore in progress
1999 Kawasaki kx250

(in reply to Slow)
Post #: 4
RE: No acceleration - 8/17/2008 10:25:51 PM   
Billistic

 

Posts: 174
Joined: 9/20/2007
From: Denver, CO
Status: offline
Buy a new fuel filter, check the air filter and check the fuel pump output.

_____________________________

Speed limit....... what speed limit ??!!!!
1988 Hurricane 600
Dynojet carb kit, K & N filter, F1 pipe
Pirelli Sport Demon 150/70/17 rear, 110/70/17 front
-1 front sprocket, +2 rear sprocket

(in reply to bojak)
Post #: 5
RE: No acceleration - 8/18/2008 10:01:59 AM   
Slow

 

Posts: 29
Joined: 7/6/2008
Status: offline
How do you check the fuel pump? Also, I replaced the fuel filter with a slightly bigger one since I could not find a stock size. Could that be the problem?

(in reply to Billistic)
Post #: 6
RE: No acceleration - 8/18/2008 11:42:11 PM   
Billistic

 

Posts: 174
Joined: 9/20/2007
From: Denver, CO
Status: offline
Doubtful about the fuel filter. I''ve heard that size doesn''t matter...... Bah,ha,ha!
Don''t have time to type out fuel pump check but it''s not hard to do.


_____________________________

Speed limit....... what speed limit ??!!!!
1988 Hurricane 600
Dynojet carb kit, K & N filter, F1 pipe
Pirelli Sport Demon 150/70/17 rear, 110/70/17 front
-1 front sprocket, +2 rear sprocket

(in reply to Slow)
Post #: 7
RE: No acceleration - 8/19/2008 12:41:24 PM   
Slow

 

Posts: 29
Joined: 7/6/2008
Status: offline
is there a diy or something? I am so upset, i thought the carbs being cleaned was going to take care of this. The idle changes based on bike positioning and it will rev up nice on choke while in nuetral but doesn''t rev up in nuetral with the choke off.

(in reply to Billistic)
Post #: 8
RE: No acceleration - 8/20/2008 8:33:41 PM   
Billistic

 

Posts: 174
Joined: 9/20/2007
From: Denver, CO
Status: offline
Sorry Man,
Carbs are a bitch and it''s not my forte but here is the pump check procedure.
1. Turn ignition off
2. Disconnect the fuel pump relay wire connector and connect the black and black/blue wire terminals at the main harness connector with a jumper wire.
3.Disconnect the fuel outlet tube at the fuel pump and connect a tube that is long enough to reach a measuring cup.
4. turn ignition on and let fuel flow for 5 seconds then turn ignition off
5. multiple amout in measuring cup by 12 to determine fuel pump flow capacity per minute
6. should be 650cc or 22 0z.


_____________________________

Speed limit....... what speed limit ??!!!!
1988 Hurricane 600
Dynojet carb kit, K & N filter, F1 pipe
Pirelli Sport Demon 150/70/17 rear, 110/70/17 front
-1 front sprocket, +2 rear sprocket

(in reply to Slow)
Post #: 9
RE: No acceleration - 8/20/2008 8:42:45 PM   
Billistic

 

Posts: 174
Joined: 9/20/2007
From: Denver, CO
Status: offline
If you do a search on your problem, you will probably find a thread that says what that person found and how they fixed it. There have been a ton of threads on carb issues lately.( That''s what I think the problem is.) Apparently if you miss something in the cleaning then the problems still remain. Good luck! It would help if you could give more details too. 

_____________________________

Speed limit....... what speed limit ??!!!!
1988 Hurricane 600
Dynojet carb kit, K & N filter, F1 pipe
Pirelli Sport Demon 150/70/17 rear, 110/70/17 front
-1 front sprocket, +2 rear sprocket

(in reply to Billistic)
Post #: 10
RE: No acceleration - 8/20/2008 8:54:36 PM   
Billistic

 

Posts: 174
Joined: 9/20/2007
From: Denver, CO
Status: offline
Read this thread
RE: no power...misfire? any ideas?
Also try checking the tightness of the carb boots so you don''t have an intake air leak.


_____________________________

Speed limit....... what speed limit ??!!!!
1988 Hurricane 600
Dynojet carb kit, K & N filter, F1 pipe
Pirelli Sport Demon 150/70/17 rear, 110/70/17 front
-1 front sprocket, +2 rear sprocket

(in reply to Billistic)
Post #: 11
Login OR Register now to post a reply to this forum topic.
Page:   [1]

 
CBR >> Past CBR Models >> CBR 600F
Jump to:

Featured Sponsors
Advertising Info

Top 10 Posters
voodoochyl7168
doncollins6257
tahoe sc5874
rrasco5615
pitsvtec5323
d2vw14_205095
tk954rr4900
vpsophmore4719
blue fox4575
chainstretch4558

New Vendors
AMSOIL - Performance Oil Technology
AMSOIL - Performance Oil Technology

CBR Forum .com is not affiliated with or endorsed by Honda Motor Company.