[Roadsters] 1970 SPL311 Engine Problem.

[Pete Koernig]

Rebuilt engine, threw mass quanities of new parts at it in addition to redoing
carbs,  new points, plugs, wires, cap, condenser, etc etc.
 
Here's the heart
breaker: 
#2 and #3 cylinders are not producing. #1 and #4 are fine, pull wire
on 2 or 3 and rpm drops about 20-30 rpm. Pull  wire on 1 or 4 engine falters
unless reconnect  to spark plug.  Good snap acceleration. Uni-Syn pretty well
matched (considering engine miss).
Much black smoke --- engine running rich to
keep running about 1000 rpm.  All four cylinders test 155 to 160 pounds
pressure at cranking speed. Cannot detect an intake manifold leak.
Enough
spark to melt your ear wax, to all four cylinders.
 
Now what?
 
Pete Koernig