Pooched CDI??

T

timtune

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KLR has no spark. Checked with a meter when cranking the starter the power into the coil was around 0.50V. I was expecting much closer to 12V. Popped all the connections between the CDI and the coil cleaned them all and it made no difference.

Thoughts??

The way I've ridden this thing hard and put it away wet has me thinking maybe this is the correct fix....


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If it’s on the +side of the coil, it’s a supply issue not the cdi. Check outputs at key and kill switch. Then side stand too. If your clutch or neutral switch interrupts power, check them too.

Then look at grounds.

If it’s low on the - side, check the cdi ground. Then ohm out the pickup coil wires, should be 100-300ohms.

I’ve seen the odd cdi failure, but not many.
 
The line out of the CDI to the coil (+ side I believe) is getting about .5V with the engine cranking over. If the engine cranks then kill, neutral and clutch interupts are good correct?

Mad Mike said:
Then ohm out the pickup coil wires, should be 100-300ohms.
Click to expand...
Not sure what this means or how/where to get the reading.
 
timtune said:
The line out of the CDI to the coil (+ side I believe) is getting about .5V with the engine cranking over. If the engine cranks then kill, neutral and clutch interupts are good correct?


Not sure what this means or how/where to get the reading.
Click to expand...
Normally the safety switches kill spark not the starter. Cdi shpuld be sending pulses to the coil which will show up as a weird voltage as most meters will display the average.

Mm is trying to get you to measure the sensor leads.

gen-1-elec-ign-no-safety-jpg.28066
 
Can you translate that for the hard of thinking? Where do the leads go and what am I setting the meter to?
 
Black with yellow stripe is ground. This diagram indicates that one side of the coil is grounded all the time. The other side is only going to get intermittent pulses of power when the CDI wants a spark. There is no circumstance when it will apply constant battery power. A normal meter isn't going to be happy about showing this. You really need a scope.
 
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