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A new one to me... Condensor and tachometer

chines1chines1
Solved the problem already, but I still don't know the "why" aspect of the whole ordeal. Hoping for some insight.

Here's the situation:
Just finishing a customer car this afternoon. No spark. 12V at the coil, nothing on the points. Go through the routine, test light, clean points, etc... still nothing. Replace coil, nothing... Replace the condensor, she fires up. BUT the tach wire was not yet back on the coil from the coil change. Plug in the tach, kills the enigne instantly. DOH!
Obviously an internal problem in the tach. Replace the tach, no fire. Another fried condensor! (Fried when I touched the tach wire to the coil). Replace yet another condensor and its a done deal.
So, I can see that something internal with the tach somehow fried the condensor, twice, but I have NEVER had a bad/fried condensor EVER!
Anyone ever seen this before?

Carey
1957 Beck Speedster(Speedster)
Original Post

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chines1chines1
Solved the problem already, but I still don't know the "why" aspect of the whole ordeal. Hoping for some insight.

Here's the situation:
Just finishing a customer car this afternoon. No spark. 12V at the coil, nothing on the points. Go through the routine, test light, clean points, etc... still nothing. Replace coil, nothing... Replace the condensor, she fires up. BUT the tach wire was not yet back on the coil from the coil change. Plug in the tach, kills the enigne instantly. DOH!
Obviously an internal problem in the tach. Replace the tach, no fire. Another fried condensor! (Fried when I touched the tach wire to the coil). Replace yet another condensor and its a done deal.
So, I can see that something internal with the tach somehow fried the condensor, twice, but I have NEVER had a bad/fried condensor EVER!
Anyone ever seen this before?

Carey
FM Former Member
someone recently had a similar problem, wasn't the tach. it was a wire
chaffed/grouded behind the dash.
as for a bad condenser, last year my brother n laws boat would
"break-up" above 2800 rpm. changed the points (its never the condenser)
ck'd timimng, fuel filter/delivery etc.
about two hours into my efforts a neighboring boat owner in the next slip pulled me aside and told me that my brother in law had left the boat idling while he went for suppplies. engine died but the key
was still in the on pos. for about 45 min. changed the condenser
and we were on our way, good as new. go figure.
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