Pull starting Im at 110psi

Ready to give up every forum I'm looking at no one has an answer to this problem.
Looking at buying a new carb or sell bike

 

You've just answered your own question! 110 compression is too low! Probably why it was back firing to begin with! They will backfire and spit gas out of the back of the carb when the piston is worn out! Or crank seals may be leaking also causing the compression to be low OR could be a combination of both piston wear and seals! Time either for a new top end or a rebuild if the rod has any up and down play at the crankshaft. OPT

 

Watched the video. Did all that.
I'm wondering if it could be the timing,
How would I adjust it or check it?

 

I can't get an accurate compression as only pull start and it only runs a few seconds but I'm getting around 110-112psi

 

110 pounds compression is the problem! Whether from piston/ring wear Or leaking crank seals! The stator sends the "signal" to the cdi module which sends the spark to the coil. The "timing" is electronically controlled by the cdi. OPT

 

Can it be in the ETC
I also just disconnected the oil sending unit and put mixed gas in

It ran until I messed with the carb now I can't get it to stay running

 

You can check the throttle,make sure that you have ONLY 1/8" slack at the thumb lever adjust cable if needed. Also hold the throttle WIDE OPEN when trying to crank,could be the engine is flooded,also you can try spraying a dab of starting fluid or contact cleaner and see if it starts,but the 110 compression reading is still not good! OPT

 

Took exhaust off solved all my backfire and sluggish issues
Runs great at top end but not dies at idle.

Any ideas?

 

What I've said before,low compression! They can start up and run ,but also when they get warm and cylinder expands and rings don't seat well against cylinder walls,they loose even more compression, won't idle and some just die. Then a lot are hard to restart until the engine cools down. OPT

 

I called polaris they said 110-112 when pull starting, motor barely turning over isn't good but not necessarily bad. They said we needed to bring it in if we couldnt get a good check on it but Once we got it running today compression is at 115

Exhaust back on tomorrow after its cleaned and will try again.