Right, the white wire is probably for the tach. The tach does not work, so...
(Anybody know what redline is supposed to be for a MV404?)
Let's see... It is the #1 cylinder I have trouble with. Oh yes, I have spark there --
ouch! But it seems like I have good spark some times and other times not.
Hard to say. We ran the "kill-one-cylinder-at-the-time" test on the scope and it
showed no RPM drop on #1 each time.
I think we are down to an invisible flaw in the cap as the most likely suspect.
(Or the mouse nest!) I'm going "to town" tomorrow (Sacramento) so I'll get parts
there. Rechecking the vacuum advance, I found that it leaks a little bit, so I'll
replace that too.
I can get a MSD 6A "box" right here in Clearlake for $200,40 out the door.
I suppose that might "cover up for" various other weaknesses that might exist
in a 1981 engine.
Will be gone for a week. Appreciate any ideas you guys might have in the meantime!