| Author | Message | ||
     Thebishop |
So I am stumped... Bike ran great 3 weeks ago. Go to start it and nothing. No spark when I try and start the bike (on either cylinder) When I run ECMSpy I can get spark on both front and rear. Any ideas? | ||
| Natexlh1000 |
It's been cold, how is your battery? Mine will happily crank over at a voltage that's too low to squirt the injectors. I suggest you try jumping it from a car >>THAT'S NOT RUNNING<< to see if it wakes up. P.S. A running car can fry your bike's shunt-type regulator. Not 100% likely of causing damage but I have heard of it happening. | ||
| Thebishop |
Thanks I put a fresh battery on and there was no change. There is no spark when I am trying to start the bike, which I am guessing is the reason it wont start but I am having issues chasing down WHY there is no spark haha. | ||
| Sparky |
How does ECMspy influence the production of sparks? | ||
| Thebishop |
If I run the coil test (front and back) spark is produced. Just proves that the coil is good and the wires running to the coil are not broken. | ||
| Hootowl |
Have you pulled a plug and verified that it sparks while you're cranking the engine? | ||
| Kyrocket |
I ran into this problem a few years ago. I was pulling into a gas station and the bike just died, never to be started again, well until. I traced wires, changed plugs, checked pick-up, swapped out coils, and everything else I could think of until one day an intellectual individual on Badweb had me check the speed-o-meter. I unplugged the sensor, which by the way, is a PITA to get to under the battery but it fired right up afterwards. Been unplugged ever since. Which is easy to do considering it's not even running right now. May or may not be your problem but it's worth a shot. Good luck! | ||
| Thebishop |
Hootowl: When cranking the engine I do not have spark. I can create spark with ECMSpy, using the built in diagnostics. Kyrocket: I will look into this. | ||
| Kyrocket |
I forgot to mention before; the speed-o-meter sensor will act as a kill switch if it goes bad. I forget the exact schematics for it but in a nutshell it draws power from the ECM and when it goes bad it shuts down your spark. Hope it's as easy as this. | ||
| Rick_a |
Reminds me of a few poor saps with Ducati's that fried their ECU's doing this. At $900 to $1200 a pop, that's a tough lesson! To the OP, hope you get it figured out. | ||
| Hootowl |
Ah, I see. Interesting about the speedo sensor. Mine have either failed with no other symptoms, or they've failed and blown the ignition circuit. Never seen one fail and kill spark but not blow a fuse. Maybe the timing cup is bad? Would that not prevent spark, but still allow ECMSpy to trigger the spark event? | ||
| Thebishop |
I will let everyone know what I find. I had some blown fuses but I replaced the fuses and nothing changed. | ||
| Bigslug |
Sidestand switch? Mike | ||
| Thebishop |
Sidestand was / is up. | ||
| Sparky |
The point about the sidestand switch is if the switch fails open, the ignition does not produce sparks. The sidestand can be up or down but if the switch is bad then you may be experiencing the failure you're having. A temporary check on the switch is to disconnect the harness from the switch and jumper the two contacts together in the connector on the harness. If that jumper allows the engine to run, then spring for a new switch or be brave and solder the jumper in there. | ||
| Thebishop |
I will check that! I am going out in the garage as soon as I get home. | ||
| Natexlh1000 |
The sidestand issue would only play a role if the bike was in gear. I really think this is the old corrosion in the fuse box thing. | ||
| Dfbutler |
I was having similar problem with my S3, just stopped and no spark. Ended up installing a new Cam Position sensor that seemed to solve the problem. http://www.americansportbike.com/shoponline/ccp0-p rodshow/17494.html | ||
| Thebishop |
Well still stumped but the bike is running  I tried everything listed here but the new cam position sensor. Nothing worked. I disconnected the ECM and then reconnected it and she started fine. Odd little problem, but fixed for now. | ||
| Two_seasons |
When disconnecting ECM, you're obviously moving a large bundle of wires. I'd check pin locks in the connector, chaffed or broken wiring. Or/and possible grounding issue/corrosion. | ||
| Hootowl |
C127 RFI | ||
| Two_seasons |
By the way, I've had pins pull out of the backside of the fuse box. Two screws and you can pull it away to check that area out. BEWARE |
