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eddie1067
Guest
Any ideas if this can happen it's a 98 bike?
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Welcome to the new B.I.R.D. Forum. Please be sure to read the "New Member / New Registered ? Please Read" thread in the Coffee Shop. This contains some important information. To become a full member ( £5.90 a year ) simply click on your user name near the top on the right I hope you enjoy the new site ................ Jaws ( John )
Yes, Eddie.
On a carb bike if the voltage is too low from the battery to provide a good spark from the coils. Similarly on an FI bike with possible further complications.
May I suggest you read this.
http://www.bikersoracle.com/blackbird/forum/showthread.php?t=67193
On a carb bike if the voltage is too low from the battery to provide a good spark from the coils. Similarly on an FI bike with possible further complications.
May I suggest you read this.
http://www.bikersoracle.com/blackbird/forum/showthread.php?t=67193
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eddie1067
Guest
Thanks for that might explain why it ran better when i switched the headlight off
Don't get locked on to the ref/rec as the fault It could as easily be the generator or battery. Or any combination of the three. The diagnosis guide will help but be warned if you replace one component you may find that another will fail soon after. Others will disagree but that is my personal experience on the two Birds I have owned
The good news is that replacement is diy stuff and upgraded parts are all available quickly and at sensible prices through JAWS
The good news is that replacement is diy stuff and upgraded parts are all available quickly and at sensible prices through JAWS
Me, for one! 8rfl@ Failure of either the reg/rec or the alternator can wreck the battery; reg/rec failure can overload the alternator and overheat it causing insulation failure; alternator failure will flatten the battery but in my experience rarely knackers it or the reg/rec. Do the tests to identify the culprit and replace as necessary.If the battery is a few years old I would replace it in any case as it will have been subjected to stress. Check ALL the associated wiring carefully as many have replaced components and found that the wiring was the problem. If you are good with wiring it would be best to connect the reg/rec output directly to the battery with new wires through an on-line fuse as the Bbirds wiring is starting to get long in the tooth and losses between the reg/rec and the battery are common.
8rfl@8rfl@8rfl@
He hasn't said it's a carb bike but 9/10 misfiring faults are electrical. 8rfl@
Ok then smartarse a fuel problem :-0)
No fuel pump on a carbie so would have to be electrical! 8rfl@ When in a hole, stop digging! lol
Me, for one! 8rfl@ Failure of either the reg/rec or the alternator can wreck the battery; reg/rec failure can overload the alternator and overheat it causing insulation failure; alternator failure will flatten the battery but in my experience rarely knackers it or the reg/rec. Do the tests to identify the culprit and replace as necessary.If the battery is a few years old I would replace it in any case as it will have been subjected to stress. Check ALL the associated wiring carefully as many have replaced components and found that the wiring was the problem. If you are good with wiring it would be best to connect the reg/rec output directly to the battery with new wires through an on-line fuse as the Bbirds wiring is starting to get long in the tooth and losses between the reg/rec and the battery are common.
Which all goes to prove that cars are better than bikes@tu*
Not in a queue of traffic. :-0)
Pmsl @tu*
A miss is always fuel OR electrical simples, on a fool infection bike it don't matter as they are already slow 8rfl@
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eddie1067
Guest
Ok after testing the charging system i can report the following
Across all 3 yellow wires on the reg rec plug i got 30volts ac, testing each one in turn as per John's instructions, i then tested the voltage at the battery 14.4 volts no lights and 13.9 with lights on, voltage drops when revved though?
Reg rec or not?
Across all 3 yellow wires on the reg rec plug i got 30volts ac, testing each one in turn as per John's instructions, i then tested the voltage at the battery 14.4 volts no lights and 13.9 with lights on, voltage drops when revved though?
Reg rec or not?
Why thank you sir @tu*
Did you also test each yellow to earth to see if you have a phase shorted out ?
voltage dropping with revs would suggest to me a gen coil gone rather than r/r or battery
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eddie1067
Guest
no i didnt test to earth can do tomorrow
thanks
thanks
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eddie1067
Guest
ok well having tested to earth i had consistent volts over all 3 terminals both at idle and rising to 25v to 26v at 3k rpm, unlikely it's the coils??
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eddie1067
Guest
The test i did today was earth probe on multi meter grounded and then tested each of the 3 yellow wires for current with the positive probe. Thanks Ed