Hi all.
As NormK seemed to have found a solution to his problem shouldn't this be a new topic.
As far I I was aware that smaller hole restricted version is part of the suction vacuum caused once engine is up n running. Similar to a cars brake booster. This keeps the decompression valve shut during operation. Changing g the size of this hole changes the strength of atmospheric force. So my point is at initial start up before any vacuum can start happening is the point where these engines are difficult to start.

Last edited by Gizmo; 16/04/20 10:23 AM.
If my collection is complete ( then how come i keep buying stuff ? ) 🤔🤔🤔🤔🤔