CB400TII CDI Module

[theboxrules]

Hey folks, I am troubleshooting some performance issues with my 1978 Hawk. Specifically the bike starts and idles well but upon acceleration around 4k, the bike hesitates for a second like it's firing on one cylinder then kicks in and accelerates strong. I have been reading a lot on things to check and there are a litany of issues that could be causing this symptom.

The PO had rebuilt the carbs already, I took them out again and cleaned them, checked the jets, needles, etc to the HSM and all checked out so far. I'm going through the maintenance (valves adjusted, timing chain adjusted) and found the section on testing the electrical components. Which gets me now to my post question.

I have seen comments here that you cannot directly check the CDI. However, the HSM has a table for checking resistance on the CDI module for multiple circuits within the CDI. It says that if any resistance measurement falls below specification to replace the CDI. So, I started ringing out each connection per the table and found where Ohms ranges were specific (example 500 MOhms) I would find a reading of 1 MOhm. Of the 50 combinations to check (I used a FLUKE multimeter with autoscaling) over half were below spec.

I still plan on pulling the carbs and checking for air leaks but what are your thoughts on the module replacement given the findings?

Thanks!

 

[theboxrules]

Bueller?

 

[crazypj]

Your not using the same meter as Honda so you wont get the same readings.
You may be better off getting a cheap analog meter (I picked one up for $2.49+tax)
If your within 20% it's probably OK, also if you get any reading on some of the connections it will work but may not work right.
It's usually an ultra reliable piece of electronics, the stators fail first due to heat and vibration