my zenoha has no spark the sparkplug is good is their a way to test the two coils it has to be one of them?

Easy method, swap plug, coils with known good ones if available. If not, there are some ohmmeter tests you can do as outlined in the Zenoah engine manuals available on this site in the Resources section under Engines. They are not conclusive tests but will however indicate if a coil is shorted out or open. Also make sure the gap between the flywheel and the pickup coil is correct. You may also want to check that the flywheel is correctly positioned on the crank...ie: sheared key. Hope this helps.


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Hello,
First thing I would do before swapping parts out is to make sure that both coils have a good ground. Most of the time when people think coils have gone bad it is just a ground problem. These engines are subjected to the worse conditions with all the different water we run it. Corrosion behind the red coli where it bolts to the case is very common and should be checked and cleaned. The grey coil also should be checked where the ground is and cleaned to make sure it has a good ground. Make sure that the connection between the two red wires is clean and tight. I have seen people try to check the fire while at the pond on a bright day and not be able to see the plug fire even though it was.

Good Luck and let us know how it works out.

Carlo

Very good point! Sometimes we forget the simple things! Thanks for chiming in Carlo.


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