Power to coils but no spark - SV650.org

31-03-10, 11:53 AM

1999 SV650 won't start.

Neither cylinder has a spark but 12.5V is going to both coils.

Electrics work, engine turns over etc.

The last two times I started the bike before the time wouldn't start, it was hard to start, but once going seemed absolutely fine.

I have changed the plugs, still no spark.

I have remove one of the spark plug caps to check for a spark directly from the HT, still no spark.

The is around 12.5V going to the coils with the ignition on, when i crank the engine this drops to around 9.5V, is this correct?

I have checked the pulse generator coil as per the manual, the resistance of it was within the acceptable range and there was no continuity between it and ground.

I have a multimeter and a manual, what should I try next?

Thanks

yorkie_chris · 31-03-10, 12:01 PM

9.5 a little low, try pop it on charge for a bit, eliminate that easy one first.

31-03-10, 11:53 AM	#1
lloyd_christmas Guest Posts: n/a	Power to coils but no spark 1999 SV650 won't start. Neither cylinder has a spark but 12.5V is going to both coils. Electrics work, engine turns over etc. The last two times I started the bike before the time wouldn't start, it was hard to start, but once going seemed absolutely fine. I have changed the plugs, still no spark. I have remove one of the spark plug caps to check for a spark directly from the HT, still no spark. The is around 12.5V going to the coils with the ignition on, when i crank the engine this drops to around 9.5V, is this correct? I have checked the pulse generator coil as per the manual, the resistance of it was within the acceptable range and there was no continuity between it and ground. I have a multimeter and a manual, what should I try next? Thanks

31-03-10, 12:01 PM	#2
yorkie_chris Noisy Git Mega Poster Join Date: Apr 2007 Location: Halifax/Leeds Posts: 26,645	Re: Power to coils but no spark 9.5 a little low, try pop it on charge for a bit, eliminate that easy one first. __________________ Currently Ex Biker Now rebuilding a 63' fishing trawler as a dive boat

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