SUPERCHARGED PHAZER WON'T START IN COLD TEMPS

[YAMMAROB]

Anyone have any gems settings for a cold start problem on a supercharged phazer? It sat outside in 10 deg all day and wanted to see how it would start and it would not start let sit in my shop all night and pops right off.
so I let it run 5 min then shut off let sit all day outside same thing tonight.

 

[Cubby]

Does it crank over when cold? Or nothing? Is it a strong crank? Good battery? Any other details?

 

[YAMMAROB]

New battery strong crank Put in side starts no problem outside 20 deg for 2.5 hours no start

 

[yamahas]

Does the fuel pump run?

 

[YAMMAROB]

YES THE THING IF YOU PUT IN 50 DEG SHOP IT STARTS ON THE SECOND REVOLUTION

 

[cannondale27]

Could there be water in fuel? Put it outside in cold. If it fails to start take air ok lid off and give it a shot of starting spray. If it fires I would bet it's gasoline freeze.

 

[canoehead]

Cold start ECU upgrade done??