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I changed the coil on my 1980 Honda cm400 so why im i not getting any spark to the plugs?
Wiki User
∙ 11y ago
Here are possible causes of no spark on the 1980 CM400, starting from the easiest to fix:
kill switch turned to "off" position.
Bad spark plugs. (It's important to be aware that on this bike, both spark plugs must not be fouled; If either one is fouled enough not to fire, there will be no spark, because the way the system is designed it takes both plugs to complete the ignition spark plug circuit.)
Kill switch malfunction, causing the coil to be grounded.
Ignition switch malfunction, causing the coil to be grounded.
Bad Coil. You've presumably eliminated this, but consider the possibility the new or used coil you obtained could be bad)
bad pulser coil or stator. (follow instructions in the shop manual to test these, the manual is available all over the net in .pdf)
Wiki User
∙ 11y ago
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