Need a little help. I just rebuilt the Walbro HDA-49 on a craftsman branded poulan 3300(or something in that family). Metering lever was set flush with the carb body. Started with the needles 1.5 turns out(service manual says 1.25) and it started/ran, but not very well. I adjusted some, but couldn't seem to find the sweet spot. Then it quit and has refused to restart. I noticed the muffler had some fuel seeping, so I pulled the plug and cranked it over a few times. BTW, don't leave the spark plug laying on top of the cylinder when doing this, as I just found out the hard way. It blew fire out of the plug hole.
Anyway, I have readjusted the needles to 1.25 turns and so far it's still refusing to pop. Fuel and impulse lines are new. It doesn't seem to respond much to needle adjustments either, or at least not as much as most others.
I'm trying to figure out why it would be pulling excess fuel. It doesn't make sense to me. Could someone have swapped in the wrong metering lever spring? I wouldn't think that to be the case since the old lever was set the same as the new one.