Spark Plug Cap Resistance

paultsmith

Active Member
I am replacing the spark plug caps and high tension wires on my XS bike.
The service data sheet says that spark plug cap should have a resistance of 10kOhm resistance however the new caps I bought have a resistance of 5Kohm and I am having a problem finding the 10kohm caps.
Any one know if there will be a problem using the 5kOhm resistance caps?

The bike has CDI ignition.

There was not a problem with the old caps and whe I measured them they were at about 6kohm.
 
zixxerboy said:
How would lower resistance plugs be a problem?

That is exactly what I was asking.
The service manual states to use 10kOhm resistors in caps, and I believe they have mentioned this for a reason.
If lower resistance caps were not a problem then why even put a resistor in them?
The resistors are there for a reason and from what I understand now is that is primarily used to reduce RF noise.

I've also read that using a wrong resistance plug cap can result in impedance mismatch and reduce spark output.
 
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