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+--- Thread: Spark then no spark (/showthread.php?tid=76246)
Spark then no spark - Boris - 28-07-16
Fun one this. Changed the battery on my 03 FZ6s at the weekend and while I was at it checked the air filter, expansion bottle and sprayed some wd40 on and around the injector bodies.
Gave the bike a clean, put the battery on charge and stuck it in the garage.
When I came to use it the next day the engine turned over, fuel pump came to life but the bike wouldn't start.
Did a diagnostic check and there were no issues.
Thought sod it lets change the spark plugs as they need doing and it would give me an excuse to check the wiring and other areas, as those of you will know when it comes to spark plug time it's practically strip the bike down.
Having temporarily refitted the fairing and battery I found that with the plugs exposed there was no spark if I tried to start up with the button.
But they would spark up when I did another diagnostic check.
I've checked all the connections under the seat and battery box and found nothing out of the ordinary.
Anybody got any ideas.
Cheers
Re: Spark then no spark - BBROWN1664 - 29-07-16
A low power battery can cause that condition. When the engine is cranking, the ECU decides there's not enough power to provide a spark too.
Ignore the fact that you put it on charge and try using jump leads to start it.
Re: Spark then no spark - Boris - 29-07-16
Cheers for the reply.
Having checked practically every connection I managed to get 'ere working .
I believe the main culprits were 2 furred up pins on me ECU.
Pain in the butt, but at least I wont have to touch the spark plugs for another 8K.