is it possible to have a weak flywheel

i have a 1978 evinrude 140. i'm not getting spark on one side of the engine. i tested everything back to the stator. on cylinders 1 and 3 i'm getting well over the 150v dva recommended out of the stator. however on cylinders 2 and 4 i'm only getting about 110v out of the stator, so i checked all my grounds and they were good. i bought a new stator and still have the same problem with roughly the same voltage readings. i checked the magnets in the flywheel for looseness but none were loose. a few had some very minor surface rust so i took some alcohol and rubbed off the rust from the magnets. i took a screwdriver and all the magnets appeared to have a pull to them although its hard to tell if its the same pull. i'm doing my tests with a fully charged battery and the engine seems to be cranking at full speed. any ideas?

Re: is it possible to have a weak flywheel

Flywheel magnets are very unlikely to be a problem. Your motor uses two power packs ... one may have an issue, which would affect two cylinders. Also, examine the wiring from the stator out for chafing, etc.

Re: is it possible to have a weak flywheel

wilde1j said:

Flywheel magnets are very unlikely to be a problem. Your motor uses two power packs ... one may have an issue, which would affect two cylinders. Also, examine the wiring from the stator out for chafing, etc.

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The magnets used since WWII simply do not go bad. Well, maybe if you incinerated them.