bbrc77

Please help!

I set up a 3-line tank for a 2 stroke glow engine. There is the carburator line with a clunk, the vent line which is pointing to the top of the tank, and a fill line which also has a clunk. Because of the way the engine is mounted, the main carburator has to travel up.

PROBLEM: the fuel stops going into the carburator. I already checked for leaks, etc. I don't know what I am doing wrong. Any advise is greatly appreciated.

Thanks.

pe reivers

Make the line to the carburetor shorter, so it does not bend upwards.
I may read the picture wrong, but if you have the tank center below the carb center, that is a problem as well.

Sport_Pilot

Thiscould beset up as uniflow. The line you call the fill line is actually the vent line, the vent line is a vent line used for filling only. Make sure the vent line (the other line with a clunk) is shorter than the pick up line. When you fill it you unplug the fill vent and pump fuel till fuel runs out of it. Fuel may come out the pick up line and flood the carb, especially if the carb is not at idle, so this is often plugged during fill up. Although on many of my uniflow setups it is just enough to prime the engine.