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suspected black box failure

 
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firststrike



Joined: 23 May 2010
Posts: 38
Location: swansea

PostPosted: Sun May 23, 2010 12:42 pm    Post subject: suspected black box failure Reply with quote

Hi folks, i am in need of a black box ecu for my YB9 Sri. The bike is only running on 1 & 4, i suspect the box.
Has anyone tried fitting Yamaha cdi unit to a bimota. I dont think this could be rocket science. Does anyone know of companys that can test these units? Crying or Very sad
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oily



Joined: 05 Apr 2008
Posts: 4788
Location: worcestershire

PostPosted: Sun May 23, 2010 12:58 pm    Post subject: Reply with quote

Does the SRI run with coils?
If so, my money is on a duff coil.
One coil fires 1 and 4, the other coil fires 2 and 3 Wink
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firststrike



Joined: 23 May 2010
Posts: 38
Location: swansea

PostPosted: Sun May 23, 2010 1:06 pm    Post subject: Reply with quote

Hi Oily, yes it does run with coils, will swap em over later and see what happens
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Evilchicken0



Joined: 12 May 2010
Posts: 2996
Location: London

PostPosted: Sun May 23, 2010 8:08 pm    Post subject: Reply with quote

Sounds like a coil to me too.
If you need a CDI it's a Yamaha FZR600R Foxeye or ThunderCat unit. The ThunderCat has a throttle sensor on the carbs so I'd guess at the 600R unit.
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firststrike



Joined: 23 May 2010
Posts: 38
Location: swansea

PostPosted: Sun May 23, 2010 9:10 pm    Post subject: Reply with quote

Thank you for the replies. I changed the coils over this evening unfortunately made no difference, no sparks on 1&4 this time. I will try plumbing in Thundercat cdi and let you all know the outcome.
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oily



Joined: 05 Apr 2008
Posts: 4788
Location: worcestershire

PostPosted: Sun May 23, 2010 9:28 pm    Post subject: Reply with quote

Well if you swaped the coils over and the spark has jumped to the other two cylinders........you've got a duff coil Wink
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Evilchicken0



Joined: 12 May 2010
Posts: 2996
Location: London

PostPosted: Mon May 24, 2010 12:20 pm    Post subject: Reply with quote

oily wrote:
Well if you swaped the coils over and the spark has jumped to the other two cylinders........you've got a duff coil Wink

Exactly (or the wireing to that side is duff) ... fit a pair Dyna Coils and some pretty coloured HT leads.
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firststrike



Joined: 23 May 2010
Posts: 38
Location: swansea

PostPosted: Mon May 24, 2010 8:09 pm    Post subject: Reply with quote

Thank you oily and evil chicken but i think the coil has been eliminated as the problem, my thoughts are if the wiring from coil 1&4 which is sparking fine is swapped with wiring from coil 2&3 and then 2&3 is sparking fine then both coils are fine. Confused
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oily



Joined: 05 Apr 2008
Posts: 4788
Location: worcestershire

PostPosted: Mon May 24, 2010 8:19 pm    Post subject: Reply with quote

wiring, connections, shorts or earth Wink
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oily



Joined: 05 Apr 2008
Posts: 4788
Location: worcestershire

PostPosted: Tue May 25, 2010 7:34 am    Post subject: Reply with quote

Ok, now I've got more time..................
Sorry, I thought you had swapped the coils over not just the wiring Crying or Very sad
Now, I still think it's NOT the ecu. The ecu does not usually power the coils, just triggers them. They are usually powered from the fuse box via the kill switch. Check there is power to the duff coil, I'm figuring not. Cant be the kill switch as one coil is firing. My money has moved to dodgy connection, broken wire or duff earth.

If by chance, there is power to the duff coil, then you can start looking elsewhere
Wink

*take note*
I don't normally do Yam's so check a wiring diagram.
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firststrike



Joined: 23 May 2010
Posts: 38
Location: swansea

PostPosted: Tue May 25, 2010 7:55 pm    Post subject: Reply with quote

Thanks for the reply Oily. I have checked connections and wiring everything is still like knew,all leads back to the ecu. I will try and set up the system from a Thundercat and see what happens. Though last night i see Martin has a YB9 Sri may ask him if i can send my ecu to him and have him run it on his bike, will confirm for sure then.
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oily



Joined: 05 Apr 2008
Posts: 4788
Location: worcestershire

PostPosted: Tue May 25, 2010 8:05 pm    Post subject: Reply with quote

Have you checked that there is 12v to BOTH coils?
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firststrike



Joined: 23 May 2010
Posts: 38
Location: swansea

PostPosted: Tue May 25, 2010 8:40 pm    Post subject: Reply with quote

Will have to check this tomorrow Oily, most annoying part about it is i took it for mot last friday and then taxed it and then stops working on saturday bugger Exclamation Exclamation
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oily



Joined: 05 Apr 2008
Posts: 4788
Location: worcestershire

PostPosted: Tue May 25, 2010 8:44 pm    Post subject: Reply with quote

Laughing Laughing
That's bimota's for you Wink

can only be somthing simple then......

Save giving you grey hair, I can buy it as a non-runner Laughing

All this talk of YB9's latley has given me a thirst to try one Laughing
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