1978 Merc 900 inline six
A guy who supposedly knows such things, diagnoses my up/down/up/down power fluctuations as a possible bad DISTRIBUTOR ASSEMBLY HOUSING or "trigger". He also says there is no way to test it, and that it will fight me like a b*tch trying to remove and replace it.
Oh...
Hi from North Georgia. Hope this doesn't get too long.
Older inline 6 on the back of a restored all-wood Thompson. I run it 1-3 times per week all year long. Starts first crank, runs without a complaint or whimper for two years. Perfect.
This started last week: running fine, about half...