Carb leaking fuel on 2/4 side
in 912 / 914 Technical Questions
7 years ago
I have a newly overhauled set or carbs and have been having hell with them. Initial problem was a rough running engine above about 28 manifold pressure. Replaced Rotax gasket with a cork gasket everything ran fine. Installed new Rotax gasket and runs fine but I see fuel leaking above 28 manifold pressure. Initially looked to be coming from the throttle butterfly arm. Had a local Rotax mechanic redo the butterfly and tested the engine again. Still seeing traces of a fuel leak coming from somewhere but only visible when the engine is running near top speed. Is there a way to pressurize the carburetor in order to look for what I think is still a pressure leak coming from somewhere?
Attached are a couple pictures where you can see the traces of fuel after just five minutes of running the engine near full power on the ground.
I am awaiting a new o-ring for the attachment nut to see if that is the source. The floats and float bowls are all new??? Anyone hear of issues with new bowls??
Need ideas before I see if Lockwood will warranty the rebuild.
Rich
N262AE
Attached are a couple pictures where you can see the traces of fuel after just five minutes of running the engine near full power on the ground.
I am awaiting a new o-ring for the attachment nut to see if that is the source. The floats and float bowls are all new??? Anyone hear of issues with new bowls??
Need ideas before I see if Lockwood will warranty the rebuild.
Rich
N262AE
image001.jpg (You do not have access to download this file.)
image003.jpg (You do not have access to download this file.)
image002.jpg (You do not have access to download this file.)
