basic s
test, do not guess
i was swagging that if there is a problem with CKP CMP sync , it might be caused by a difference in the pickup wheel / reluctor for the CKP or CMP sensor
not the sensor itself.
and
you have not yet measured intake vacuum
which is critical
you seem like a fairly wise individual ...
stop doing this all willy nilly , you need to start at the beginning and finish at the end -
the beginning is to confirm all the mechanical parts of the engine are in good shape
starting with intake vacuum measurement .
which should be about 20" at hot idle with ZERO flutter in the gauge .
what is your s ?
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