Yesterday I did a vacuum check and got a reading of 17 at 850 rpm with an elevation of 776 ft above sea level. I drew the vac from behind the TB as describe above.
Any thoughts and opinions on the health of my motor with these readings? This weekend I'm going to do a compression test using a manual gauge. I will shoot a video and post it on youtube with a link and see if I can get any thoughts on my results.