Vacantstance
XS400 Member
Forgive me because this is my first ever motorcycle and I'm no Mechanic.
I have a 1980 XS400 Special and I tested the ignition coils. According to the Haynes manual, the primary resistance range should be between 3-5 ohms. Mine measure 2.6. The secondary resistance range should be 10.0 and above....mine measure 8.26 and 8.29. So my assumption is that I need to replace the coils. I was reading this thread and this gentleman gives the same measurements of his coils and seems to imply that those readings are normal. No one advised him to replace them or even suggested that he troubleshoot them.
So, I bought two coils off of eBay and measured them when they arrived and they have the same measurements as my existing coils and the coils from the thread above. Am I missing something here? Are all three sets of these coils bad or are they all good and I didn't need to replace mine? I could use some direction.
I have a 1980 XS400 Special and I tested the ignition coils. According to the Haynes manual, the primary resistance range should be between 3-5 ohms. Mine measure 2.6. The secondary resistance range should be 10.0 and above....mine measure 8.26 and 8.29. So my assumption is that I need to replace the coils. I was reading this thread and this gentleman gives the same measurements of his coils and seems to imply that those readings are normal. No one advised him to replace them or even suggested that he troubleshoot them.
So, I bought two coils off of eBay and measured them when they arrived and they have the same measurements as my existing coils and the coils from the thread above. Am I missing something here? Are all three sets of these coils bad or are they all good and I didn't need to replace mine? I could use some direction.