CMP Retard New Motor 99 k1500 Suburban

[VortecBurb]

At idle, ignition timing is aproximately -20 degrees.[/QUOTE]

Is that the same as ignition timing advance for cyl #1 ? that is running at +22

 

[VortecBurb]

got it to -1.9 best I could do still doesn't idle great but definitely starts better than the +5.2.
but the +5 had a better idle bumping the starter is the way to go cut my aggravation time down
to an hour.