Little things, like tank height, can make a big difference. How high is your fuel tank? If it is at the same level as the spraybar in your carb (the spraybar is where the fuel comes out to go into the engine), that shouldn't be a problem, assuming all else is nominal (as it should be).

How is the engine's compression? Is it the same, or close to the same, as it was before you disassembled the engine? It is important that the engine's sleeve (liner) be put back in the engine the same way that it came out. And it is equally important that the piston go in the same way it was when it came out. If not, you may have compression (seal) issues.

Did you know that the two-stroke glow engine has two important seal areas (not counting the close fit of the crankshaft to the crankcase)? The top of the piston forms the usual compression seal that most of us think about, but the piston skirt (lower portion of the piston) must also seal well in order to draw fuel from the fuel tank and then to pump the fuel/air mixture into the combustion chamber. If the engine is assembled incorrectly, or if there are leaking gaskets, you will not be able to pump fuel from the tank, or inject the fuel/air mixture into the combustion chamber properly.


Ed Cregger