Husky 142 problems

[Sharkster]

Hey guys! I'm currently working on a Husky 142. I could see right away that someone tried to work on it, for all the carb screws were loose, and the fuel line smashed flat. I replaced the carb, installed new fuel line and filter, and replaced the impulse tube. My problem is that the carb won't draw fuel. When I pull the line off it, the fuel runs, so I know the line and filter are good. The carb is new. The old one did the same thing, not draw fuel, so I ruled out carb problems. I pulled the plate off to replace the impulse tube, and the breather to the head is in good shape. 

Now my question is this: is it possible that the previous owner tried replacing the rings as well but didn't install them correctly? I know it seems a long shot, but with everything seemingly working as it should, the rings are the last things I can think of.

Any and all help woulb be greatly appreciated! 

[donbj]

Try a squirt of mixed fuel into the carb to give it a boost. Don't use ether. What's the compression, does it feel good? Does it have spark? Just ideas.

[Guydreads]

Aftermarket carbs can sometimes be an issue. Is the spark plug wet or dry after you pull it over a number of times? Try as Don said to squirt two stroke down the throat and see if it'll run. 
The rings wouldn't affect fuel getting to the carb in all probability. I personally would pull the muffler and check the piston for scoring. Since I haven't worked on these saws I'm not entirely sure of how everything looks under the hood.
Also, check the intake boot for cracks/leaks. 

[Sharkster]

The plug is dry, so is the carb. I will try squirting fuel into the carb and see how it goes. Thanks for the relies. I will let you know...

Also, it seems to have good compression. I don't have a gauge to check it but it does seem good

[sawguy21]

Try suspending it by the starter, if it drops the compression is weak. The rings don't just fail suddenly on their own unless debris got into the cylinder or they lacked lubrication. They can't be installed upside down because of the locating pins. 

[Fishnuts2]

I had a trimmer given to me like this same problem.  Carbs, lines, filter, etc.  Ran like crazy after I pulled the muffler.  Come to think of it, I had it happen to a snowmobile that broke it's track and it whacked the exhaust pipe shut.  The exhaust exit was it the top front of the tunnel.
Just things to try from my corner!