Sachs 3.2 Problem
 

My Sachs 3.2 turns a Mejlik 21x10 at about 7400, plenty of power, BUT - on a downward maneuver ( out of a hammerhead, etc.) and at idle, there is a major hesitation in the throttle response when I pull out to level. Never hesitates on the ground and I don't notice any going vertical or level flight. I have tried ALL the normal things such as bigger fuel line, clunks, tees, etc., cleaned the filthy screen, and still no luck. It's a real horse except for the heart failure during this hesitation. My friend is experiencing the same symptoms with his G62 but he hasn't done all the obvious yet. Any help would be appreciated.....

Thanks Lew

Sachs 3.2 Problem
 

Lew, a couple of things come to mind. It sounds like the engine is going lean. You have probably tried the obvious which is opening the idle mixture screw an eighth at a time to see if there is an improvement.

The other possibility is that the air flow across the carb is causing the atmospheric pressure sensor diaphram to make the carb lean out. If you want to try a fix then remove the cover (4 screws for Walbro carb) from the carb. Solder a small brass tube into one of the holes on the carb. If it has another hole, seal it. Reinstall cover. Run a piece of fuel tubing from the brass tube through the firewall to an area of dead airspace inside the fuse. This should stabilize the pressure changes to the carb.

Ken

Sachs 3.2 Problem
 

Thanks Ken - I'll give it a try. I've heard of that but it slipped my mind. I also tried different positions and sizes of the velocity stack.

Lew