Originally posted by mpnye
I think you're at the point where you need PROFESSIONAL HELP ! ! !
That's what I do for a living & the reason I have a 5-gas infrared exhaust gas analyzer.
A vacuum leak would have a greater effect at idle, and a lesser effect on the high speed test.
As far as two different technicians doing the test, if they used the same ( suspect ) equipment, it would give the same results.
Out- of -date calibration gas can cause some pretty weird readings.
Maybe we'll just have to wait until the 24 th to get our answers.