CBR 1000F "Hurricane" 1987-1996 CBR 1000F

Running Rich

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Old Jul 17, 2009 | 10:29 PM
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Default Running Rich

So, in the morning my 1988 hurricane starts up real fast and runs great, then after riding a little while and then shutting down, it is quite hard to start up and the choke only makes it worse, which leads me to believe it is too rich, anyone know how to adjust this. Thanks.
 
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Old Jul 18, 2009 | 06:35 AM
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well it really depends on your setup, like after market exhaust?after market air filter? does the carbs have a jet kit? if you think its too rich haul a plug an look see if they as black as your boot or a nice light brown or whitish, black-rich,brown- good, white- lean
while your there might as well make sure they are gapped proper. now if its all good there its possible its something else but id check all plugs. now if your high alt you want it to be alittle on the rich side so the air fuel screws should be around 2 1/2 turns out, if not right around 2 turns out then give her a shot an see how it works
 
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Old Jul 18, 2009 | 02:59 PM
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Ok, I'll do what both of you guys said, Thanks.
 
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Old Jul 18, 2009 | 05:42 PM
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I did what CBRClassic said, and it started right up, what does that mean?
 
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Old Jul 19, 2009 | 11:35 AM
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It means that it's definately running rich.

By opening the throttle all the way, you let air in to lean it out.
 
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Old Jul 19, 2009 | 07:58 PM
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here is a picture of whats possible the plugs may look like

 
Attached Thumbnails Running Rich-spkplg_colorchart1.jpg  

Last edited by CBRclassic; Jul 19, 2009 at 08:03 PM.
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Old Jul 20, 2009 | 08:41 AM
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That is a good chart. I remember that from quite a while back. Just some really great examples.
 
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