I have a Zenith carburetor on my 2180 VW. I installed a WOT spring on the throttle plate shaft that would open the throttle in case the the throttle control linkage disconnected for whatever reason. The logic is to have the engine run full RPM rather than idle for a forced landing with no throttle control. Engine operation could be managed by switching the ignition on and off. Backfires something terrible when I do that. Question: How often do throttle linkages break? What prompts the question is: The WOT spring on my carb is holding the throttle plate a little open so that I cannot get down to 800 RPM idle. I disconnected the spring and everything works OK.
Sid Wood Tri-gear KR-2 N6242 Mechanicsville, MD, USA
