The 95% volume is a regulation due to fuel expansion. If you pump fuel from ground tanks (pretty typical) the fuel is coming up the temperature of the ground (45 degrees) and if it is a warm day, the fuel will expand as it warms. Say you drive in a southern environment and the fuel warms to 100 degrees. Every gallon of fuel expands to 1.0253 gallons.
In the particular case of this car, I had a tow truck come and jump it. Not only did he have to use a 1000 amp charger, he had to augment it with his truck battery. I drove the car for 50 miles or so, turned off the engine, and again it wouldn't start. So, bad battery. I had it replaced and no more problems. Thank you all for your input.
The culprit was a seized EGR valve. I was under the impression that emission related issues would always throw a CEL. Turns out that I was wrong. The code reader revealed a P409 without CEL, later steps were easy.
I removed the EGR valve, found it stuck, cleaned and reinstalled it.
I finally managed to fix it. there were quite a few issues. The injector seal was not proper and 2 injectors were faulty.
If the injector is not sealed(copper) properly, there will be compression loss.
the car did start without MAF and some other sensors, but all major sensors were needed.
The timing was not an issue as it was correctly done.