My Bonnie keeps Dying...Can you HELP PLEASE.

[buddybonny]

Hello Peeps. I have a very early Bonnie 2002 with 24000 on the clock. I use my horse to and thro work in the early hours but have run into trouble. Whilst travelling at speed the other day, she just cut out as if i had to change from Main, to reserve on the petrol valve. There was no coughing, or spluttering. Just a straight forward cut out. I checked the fuel flow , of which i had, and fiddled with bits, [not that i could see much it was dark].
She just point blank refused to start. After about 15 mins, she would fire up again. I would get going only for 5 top 6 miles down the road it would happen again. This happened 4 times until the battery finally died and i had to be recovered. I know about the venting probs there has been and am currently working my way through the fuel system which isnt a problem. My question is......Could this be a Coil Problem breaking down.?? Could this be a PICK-UP coil problem?? What else could it be?? Can anyone please help. ?? Thankyou.. Buddy.:motorbike2:

 

[Norvel]

School of thought is that if it just "Cuts-out" look for electrical.

Fuel problems tend to sputter or surge.

 

[bluedes]

check the electic connector under the seat..the seat hits it and breaks the connection ...that is what happened to mine ...bluedes

 

[mark66]

+1 on the last two posters. I'd be looking for an electrical problem not fuel. Keep in mind that kick stand switch and its circuit.

 

[buddybonny]

Thanks . I will check it all out. Ta for all ur replys. Buddy.

 

[Sal Paradise]

Start with battery terminals, make sure they are tight. Then when you get a full battery charge - check for spark at a grounded plug, from there its test coil (including 12 volt power at coil with switch on) , test pickup or signal generator, igniter. Check side stand switch and ignition switch.

 

[DandyDoug]

I had a similar problem with my 05, after a replacement set of coils, three different ignition pulsers, it was finally determined to be the dreaded black box .
The one that mounts under the seat on the rear fender. Once it was found to have an intermitent fault I have had no further problems.

I suggest you try one from another bike and see if that cures your problem.

Good luck with your search for the problem and an easy resolution.

 

[nohawk]

I just had both electrical and fueling problems, sidestand switch had to be jumped and Two float bowl bolts were missing!!! Not a real fun ride.

 

[alxfer]

I'm went through the same problems.
Found the coil open circuit on secondary side. Replaced it, bike started OK outside garage. I put it away for the day, came next day, no start. No spark at plugs
Try a known good spark plug against the head to see if you get a spark.
Check out the electrical switches, side stand,cut out, neutral, ignition, diode pack, clutch.
I drew a blank on all of these, I am suspecting the ECU but I am getting a professional to double check before I fork out an arm and a leg for a new one.
Happy hunting

 

[Sal Paradise]

do you guys have a service manual? You absolutely have to have one to diagnose. I have one and would be happy to look up and.or send you some info. pm me.