Hello Katriders 1st Post "no spark"

[styxplo]

I am new to forums and Katana. I have a 1992 Katana with no spark. I have tested everything I am able to test. As Far as I can tell from the wiring diagram if I have + 12v to th orange and white wire at the cdi box everything before that is good (neutral switch, sidestand switch, kill switch). I have + 12 volts at the orange and white wire and a good ground. I checked the primary and secondary resistance of the coils. They are within specs. I also checked the resistance across the pickup coil and tested each of the two leads to ground. Both tests were good. I decided it must be the CDI box. Ordered a used one from ebay, installed it still no spark. With the ignition on I see +12 v (to Ground) on both leads on the primary side to the coils at all times (with both leads connected to the coil) not sure if this is right. I see this with both the original CDI and the one from ebay. From what I can tell the ground side of the primary is what the CDI switches. I also noticed that when I turn on the ignition my tach goes to (and stays at) roughly 9000 with the bike not running (Not sure if that is right either). When I crank the engine over the Tach drops down and bounces around 500 or so RPM (which seems correct).

[car0linab0y]

try new plugs?

[cintidude04]

welcome to KR, Im sure someone will be able to assist you,

All I could do would be to suggest new plugs, battery, and/or check the volts at the coils. But from the sound of it your more electronic saavy than I so Ill be sure to be the one asking you questions. 0

[hardlydangerous]

pusle coil/signal pick up (right side of engine) or the wiring for said unit.
fuse
if your getting power to the coils but no spark signal and you have tried a known working cdi you need to chech the signal going to the cdi.

[styxplo]

I ohmed out the pulse coil it read 165 ohms which is within specs. I also read each of the two coil leads to ground and it read an open (no short to ground). These were the two tests from a manual and a shop. I put my digital meter across the leads and cranked the engine over. It read a max around 386 millivolts, but it is hard to get a good reading on a pulse like that with a digital meter. There was a voltage though.

[styxplo]

I appreciate everyones help. I figured it out. Something in the tach is messed up. When I unplugged it I got spark and the bike started right up.

[KAT TOY]

good job.

[Kfreak]

The tach reading 9000 was the indicator. Not normal.

[KatanaGSX92]

Welcome!

[Rod]

Welcome home and feel free to help or ask for help you seem to be electric savey which a lot of people are scared of.

[willbdish]

welcome

[Devinjordan]

welcome to KR!

[car0linab0y]

The tach reading 9000 was the indicator. Not normal.

didn't seem normal to me either when I read it, but I remember seeing the needles move on old cars as a kid (and some new ones now) when you turn the key to "on", so I figured maybe it WAS normal on a pre.