Gas at startup.

You all have helped before and I hope you can help again. I have a flywheel start B that isn't pushing gas from the carb to the cylinders when starting from the flywheel.

It will pull start real easy, but will not start from the flywheel.

There is no vapor coming from the petcocks when the flywheel is turned over. I have checked the timing, installed new plugs and checked to make sure the spark is good.

I'm positive it just isn't getting fuel into the cylinders. I know the carb is getting fuel as I have opened the petcock at the bottom of the carb bowl and it flows good. I have also opened the idle needle 2 - 3 full turns to give it more fuel and it doesn't make any difference.

Not sure what to check or adjust next.

Any ideas would be appreciated.

Thank You

I took the carb off the B and the choke plate is closing. Not sure if it is enough because it does seal on the bottom but not quite on the top. It leaves about 1/8th opening on the top. Also, the choke plate has a whole in the bottom side. Is this supposed to be there? Machine made, not wear or anything like that.

I have the carb tore apart now, checking the main jet.

Will keep you posted,
Thanks, Brain

the hole is about a 1/8" and is circular.

Not sure what you mean by a little door with a spring. Coming from the air intake, there is only the choke plate before the air hits the center of the carb. There is no other point of blockage.

thanks
Brain

I had a friend who tore the carb apart last night and said it was really gummed up from gas.

I'm going to install it tonight and see how it does. I don't think that carb has the "trap door". I took that carb apart when I first got it and put a new float in it. It didn't have one then either.

I'll let you know tomorrow how it does.

Thanks
Tim Brain