Electrical Gremlins- a little help please?

[gregmasset]

My ‘56 A just had its carbs (zeniths) rebuilt. Ran good and revved fine in the shop. I took it around the block and above about 2000 rpm under load, it started to pop and backfire. Mechanic recommended I change the coil and condenser. I replaced both and then it wouldn’t start. I’ve heard new replacement parts are suspect - Turkish Bosch, etc.
So I put the old coil on and no spark. Old condenser back on- no spark.
What Have I Done?
Thanks for any advice

[Suboval]

Check your engine ground.
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It all works on paper.

There's two things we learn from history:
1.) History repeats itself.
2.) We don't learn from history.

[roy mawbey]

The coil HT lead to the central connection in the distributor cap does still have the spring loaded carbon pick up still place to touch the brass contact on the rotor arm?

The connections are correct to the book on the contact breaker points (insulation) and the condenser? The points themselves are correct and not burnt and have the correct gap?

Roy
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Roy
RHD356A super75 106954

[MMW]

Before you start replacing parts check for fuel and spark. You can run through this checklist for troubleshooting. It's for VW but same basic stuff for a 356.

http://www.vw-resource.com/car_wont_start.html
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Mic
1959 356 coupe
Missing the original engine 72488
Update - third pc. found!
Now just need the case halves.
1965 fenderless beetle