If your 100 the crank pin your using is correct and the static timing is bang on we need to explore another reason for the low intake vacuum .
Compressions
Air leak check
Throttle plate
Valve clearances
All the basics but until that vacuum.reading is up we will never get the engine to idle , the puffing noise interests me could you perhaps video the symptom it may help more accurately understand the concern
Dcunning35 wrote:If your 100 the crank pin your using is correct and the static timing is bang on we need to explore another reason for the low intake vacuum
And the late ignition event.
There's sommat amiss here with this cars info & symptoms
As Eric O. would say : THERE IS YOUR PROBLEM, LADY
Car pures like brand new....0 Error codes present, Full Power
and not 1 Misfire.Vacuum readings steady and at normal specs.
Will do some after Waveforms in the next Week or so, but just
follow up, and not leave this open-ended....
Otherwise that broken plate does not explain the low vacuum or have I missed something ?
I believed the timing had jump from his scope traces!
I not sure whether the engine actually run!
With this in mind, I'm thinking along the lines of the following;
When the starter motor pinion engages the ring gear the plate turns much faster than the crankshaft because 'yes' it's detached, hence low speed turning crankshaft = slow piston movement, hence low vacuum, or would you think I have missed something myself?