Hard to crank 10 mil cub

[JCSO605]

I have kicked my bike until I have meat missing on my foot. I got it cranked got it to idle by adjusting the idle screws. Made a few passes and got it to about 170 degrees. I killed it to check plugs. Now I can't get it to start. It's a ten mil cub on alky. 178 psi 39.5 mikuni carbs billet bowls 116 tube drill 60 pilot. Any suggestions would be appreciated.

[sprinklerman]

Outside temp? Timing?

 

Sent from a van down by the river

[JCSO605]

80 out. Timing at +10 set by builder

[JCSO605]

It ran good once it warmed up but when I killed it couldn't get it to crank again. I put purge gas through it and I got it to crank and run at idle for a minute.

[J-Madd]

Sounds lean on the pilot or air leak. I don't know mikunis so I don't know if that jet sounds right or not. Are you using the choke?

[JCSO605]

Yes I used the choke I wondering if I need to adjust the air screws? Where should I start with them?

[sleeper06]

How old is your fuel , and might aswell pressure test motor, has it been sitting long

[JCSO605]

fuel is brand new and yes motor has sat for several months. I also found a severe leak in the bowl of my right side carb where the power jet is tapped in.  right side did not seem to be firing at all times when I had it running.

[JCSO605]

Any one know where I can get the brass nipples for the power jets that go in the bowls of the carb or do I have to buy a whole new powerjet kit