I ran into a problem with my Brillelli 40GT. It started and ran great on the test stand, but I now have it in the plane and I can't get it started. It seems that the problem is that the gas is not being pulled into the carb. I've choked it with the choke, I've put my finger into the venturi to try and choke it, and no matter what I do, it doesn't pull the gas through the line.

I thought these Walbro carbs acted like little fuel pumps? Is it possible that my carb is defective? It hardly seems possible since it ran so great on the stand. I mounted it in pretty much the same position as it is in the plane, using the same fuel tank and lines.

In total desperation, I spritzed it with a little starting fluid today and it fired right up. It ran for about 5 seconds, or until the starting fluid ran out. That told me that the problem was fuel related, not ignition. I looked at the gas in the line and it never moved a bit.

I can almost guarantee you that this is somthing stupid that I'm overlooking, but I'm clueless right now. What am I missing here?

Oh, and yes, I know the spark plug wire is off in the picture, that's not the problem. I had to remove it to get the cowl off.

Thanks,

First time gasser Boy.