Author Topic: cb500 k1 problem  (Read 1324 times)

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Offline emilios

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cb500 k1 problem
« on: March 22, 2010, 08:14:07 AM »
Hi
Yesterday my bike after a 30km run i stop and put to neutral and suddenly it stop...
That happend before too...do i have to worry...to check something?

Offline 76CB5WI

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Re: cb500 k1 problem
« Reply #1 on: March 22, 2010, 02:39:49 PM »
Sounds like your carbs load up after a run and the motor richens and dies
Take your carbs off and clean them up adjust them. Pay attention to the
idle air screws and float heights. Oh and get a new air filter those originals
dont last forever.
Then check everything else ;)
« Last Edit: March 22, 2010, 02:47:17 PM by 76cb5WI »
87 FJ1200
72 CB750
76 CB550

Offline emilios

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Re: cb500 k1 problem
« Reply #2 on: March 24, 2010, 08:58:51 AM »
My carbs are total rebuilt 1000miles before...new float,jets air filter etc..

Offline number13

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Re: cb500 k1 problem
« Reply #3 on: March 24, 2010, 09:33:53 AM »
Check battery connections, fuse connections
and possibly the  ignition switch connector.
Bikes parked out front mean good chicken-fried steak inside.

Offline 76CB5WI

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Re: cb500 k1 problem
« Reply #4 on: March 24, 2010, 09:36:14 AM »
Recheck them somethings not set right or done right.
When bikes die at idle theyre to rich or too lean on the idle circuit
 Just MO Shoot your timing too. ;D
Alot of people rebuild carbs and never
dip the carb bodies to get all the crap out  just ideas.
« Last Edit: March 24, 2010, 09:55:36 AM by 76cb5WI »
87 FJ1200
72 CB750
76 CB550

Offline bistromath

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Re: cb500 k1 problem
« Reply #5 on: March 24, 2010, 09:42:47 AM »
My carbs are total rebuilt 1000miles before...new float,jets air filter etc..


Yeah, but did you do an idle adjustment on them, or were they just set stock? Follow the carb idle adjustment procedure in the manual, on a fully warmed up engine.
'75 CB550F

Offline emilios

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Re: cb500 k1 problem
« Reply #6 on: March 24, 2010, 12:09:42 PM »
Idle adjustment?
Your talking about air screw?

Offline bistromath

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Re: cb500 k1 problem
« Reply #7 on: March 25, 2010, 09:49:05 AM »
Yep.
'75 CB550F

Offline emilios

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Re: cb500 k1 problem
« Reply #8 on: March 27, 2010, 12:47:35 AM »
Ok...today i did the air screw adjusment like manual say..
but i still have that problem...i also notice that my carb spitting back when i open throttle quickly from idle..
Do they need cleaning?
Is spitting back and engine stop causing from the same reason?

Offline emilios

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Re: cb500 k1 problem
« Reply #9 on: March 27, 2010, 08:32:24 AM »
Ok i will try to tell better what is going on with my bike..
Bike starts easy and runs with choke at idle..after half minute i turn choke off and bike idles well...i run  bike and  works fine..
when i stop after about 20 minutes run..bike idles few seconds and after engine die...i push starter button and its firing again,idles few seconds and then die etc....
I did the air screw adjustment but nothing.
I have to know where to check...carbs?timing?engine?electical?
Please advice

Online bryanj

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Re: cb500 k1 problem
« Reply #10 on: March 27, 2010, 09:01:14 AM »
What idle revs you got it set at?
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

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Offline emilios

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Re: cb500 k1 problem
« Reply #11 on: March 27, 2010, 09:21:46 AM »
1000 revs if my tacho is right

Online bryanj

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Re: cb500 k1 problem
« Reply #12 on: March 27, 2010, 09:22:50 AM »
Up it 1150 and see what happens BUT set it at that with the engine HOT
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

Offline emilios

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Re: cb500 k1 problem
« Reply #13 on: March 27, 2010, 09:25:00 AM »
Ok i will try that tomorrow and ill let you know
Thanks

Online bryanj

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Re: cb500 k1 problem
« Reply #14 on: March 27, 2010, 09:26:59 AM »
Sorry I meant TO 1150 NOT by 1150, this damn dyslexic keyboard needs replacing
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

Offline emilios

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Re: cb500 k1 problem
« Reply #15 on: March 27, 2010, 09:30:02 AM »
ok
 :)

Offline emilios

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Re: cb500 k1 problem
« Reply #16 on: March 30, 2010, 10:05:35 AM »
Hi
I didnt find time to check bike..but i wonder if i solve the problem with rev to 1150 what this mean?
Where is the problem?

Online bryanj

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Re: cb500 k1 problem
« Reply #17 on: March 30, 2010, 11:28:26 PM »
No problem just they dont like adling at much less than 1,100 rpm
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!