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

Starting issues, again!

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  #11  
Old 07-09-2013, 08:19 PM
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It did. And I drove her to work but then couldn't get her home...

It was exciting because it was my first time riding her, ever!

But disappointing on so many levels. I don't think the battery is staying charged, I think that there are many vacuum leaks in the carbs, I really feel as if she is running to rich or lean but jets are so damn expensive I don't want to go buy a ton to get it all figured out.. . and she won't stay running long enough or well enough for me to clearly be able to look at the plugs to tell and I'm not really even 100% sure that all the coils and wires are good so I need to test them.

Its just hard to find a starting point when there is so much wrong....
 
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Old 07-09-2013, 08:29 PM
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Two issues apparent to me

No charge of the battery - bad stator - bad RR or bad batt

Carbs

Pod filters always cause poor running by way of too rich a mixture
and uneven across the - outer 2 cylinders get two much cool air
inside two get warm restricted air

I'd make extensions and move the pods further out from the carb
so there's a "draw" on them you need a slight vacuum / vortex on
the air intake side of the carb

Clip needles you added further exacerbate the rich running scenario
if used with stock jets the cone shape at the top of those clip style
needles are not the same as the oem ones - that's a problem
They are less come shaped and essentially just dump fuel in when
the throttle opens - making the motor feel like it's bogging down
and struggling to gain power from over fueling


I'd put the stock needles back on with a single shim and go from there

Just my casual observations man.
 
  #13  
Old 07-09-2013, 08:40 PM
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Originally Posted by Sprock
Two issues apparent to me

No charge of the battery - bad stator - bad RR or bad batt

Carbs

Pod filters always cause poor running by way of too rich a mixture
and uneven across the - outer 2 cylinders get two much cool air
inside two get warm restricted air

Clip needles you added further exacerbate the rich running scenario
if used with stock jets the cone shape at the top of those clip style
needles are not the same as the oem ones - that's a problem
They are less come shaped and essentially just dump fuel in when
the throttle opens - making the motor feel like it's bogging down
and struggling to gain power from over fueling

Just my casual observations man.
Charge: could be stator it is 23 years old... Battery is new. RR?

Yeah I know the pod filters are causing trouble... Read a post. You need equal amounts of stable air to the cc of the cylinder before entering the carbs. Long story short... Put 4" tubes between the carbs and the filters.
I am running clip needles but larger jets. I think I need to lower my needle to lean it out and go down in pilot jet since I jumped way up in those as well, or maybe just go back to stock.

And your right it does feel like its bogging down when I give it throttle.

Your a smart guy! Thanks for the help
 
  #14  
Old 07-09-2013, 08:43 PM
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Yeah R/R would be my bet too and hopefully the battery has not already been boiled
up too much. I had this happen to my 90 once

Man throw the stock jets and needles back in so you can get riding the damned bike
for now before the season is half over !

I'm not smart - just know what a frustrating pain in the rear it is as these bikes carbs
are real finicky when you go dicking around with any jets or needles other than the
stockers
 
  #15  
Old 07-09-2013, 08:48 PM
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What is this RR?
 
  #16  
Old 07-09-2013, 08:52 PM
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Regulator / Rectifier ( notorious for frying up and giving out ) when they do they
keep charging your battery boiling off the electrolyte or sometimes just do nothing
or sometimes wipe out a field coil on the stator.

My 90 went bad I changed the R/R and the Batt - problem was solved

It had boiled off half the electrolyte on a new wet style battery and the old R/R
was boiling hot to the touch after the bike ran a few mins

left side of frame midway under the seat

































 
  #17  
Old 07-09-2013, 10:01 PM
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Oh yes I know that part well. How can you test it? Or just inspect for damages?
 
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Old 07-09-2013, 10:44 PM
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Originally Posted by AMSOIL929
Oh yes I know that part well. How can you test it? Or just inspect for damages?

You should find all the answers in this link from Naga_Thai

http://api.viglink.com/api/click?for...13734280208198

Cheers, SB
 
  #19  
Old 07-10-2013, 10:13 PM
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Originally Posted by Sebastionbear
You should find all the answers in this link from Naga_Thai

http://api.viglink.com/api/click?for...13734280208198

Cheers, SB
Hey thanks man! I haven't had the time to read this yet but I did glance at it. End state: get the new version not the old one!
 
  #20  
Old 07-12-2013, 02:35 PM
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So i read that entire packet. I have a grip of testing to do... Hopefully there is not much wrong... buying parts is fun, spending the money is not!
 

Last edited by AMSOIL929; 07-12-2013 at 02:39 PM.


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