Car can't start after parking overnight need help
 

Hi people. Have a big issue here
17 Stock BRZ, aftermarket intake and OFT Stage 1 map, catback exhaust, never touched engine.
HKS Spark plugs changed in 120,000km, now is at 160,000km.
Now living in Saskatchewan
Car failed to start after parking overnight, can crank, battery full charged doesn’t help.
First time happened back in October, pulled engine out and found cylinder flooded by gasoline, cleaned up and drives well.
Just happened again, same symptom, car can crank but not starting. Any idea?
No error code found either.
I’m doubting about sensors or fuel system issue.
MAF? MAP? Leaking fuel injector?
I attached YouTube video link down here, took some videos including trying start the car, trying flood cleaning mode and reading OBD data through OFT tablet.
Many thanks.
https://www.youtube.com/playlist?lis...zWSJMvt5oiSMVy
:thanks:

If it's cold enough, your old battery on "full charge" really just may not be up to it. Is it the original? Do you have the original battery in it still?
Temp looked to read -18c.
I see fuel is full

Nice videos. I would put the battery voltage on the OFT to monitor while it cranks.
Some of the attempts do sound like a weak battery, but that might have been due to you keeping cranking the car without it starting, as a few other attempts sound pretty healthy.
I would try booster cables or a booster pack to rule out the battery, other than that I can't help much.

Has you ruled out a spark issue? Spray a little starting fluid into the intake and see what happens.

Thank you for all replies, my original battery was done back in 2023, unfortunately the new AGM one was deeply discharged by the shop twice so it dies again after only two years, I bought a new battery today and now my car is back on road!

Thank you I bought a new battery to test today and I found the new battery from 2023 is done.

It is battery issue, I figured out today. Many thanks!

My car is back on road! It was battery issue, I didn't expect it dies in two years,