Hey Don! Check out the thread below from the Engine section. It is all about Hot Idle and the associated instability noticed by many IO people in the RV community (myself included). It seems many are drawing the conclusion that it is something we just have to live with. I have the AFP system and the idle on a cool morning, first flight of the day is nearly as smooth as a baby's bottom. Later in the day after that $500.00 hamburger with the mid day sun keeping Florida in the mid to upper 80's, its chaos! The loopy idle is all over the place. If it is a long taxi, like arriving at Sun N Fun, you have to be on your toes with mixture and throttle to keep her running.
What is your expert advice, things to check or insulate such as injector feed lines? In my case, all fuel lines are fire sleeved and inline sensors are covered with reflective fiberglass/aluminum tape. The Distributor and stainless feed lines are not covered. The engine mounted fuel pump has a 1" tube blowing on it but no shield. The electrical pump and associated plumbing is all in the cockpit. There is no water separator.
As others have pointed out in the thread, Cessna's, although they have the same hot start requirements, seem to idle good when hot. Does the tighter cowling really make that big of a difference?
http://www.vansairforce.com/community/showthread.php?t=28871
What is your expert advice, things to check or insulate such as injector feed lines? In my case, all fuel lines are fire sleeved and inline sensors are covered with reflective fiberglass/aluminum tape. The Distributor and stainless feed lines are not covered. The engine mounted fuel pump has a 1" tube blowing on it but no shield. The electrical pump and associated plumbing is all in the cockpit. There is no water separator.
As others have pointed out in the thread, Cessna's, although they have the same hot start requirements, seem to idle good when hot. Does the tighter cowling really make that big of a difference?
http://www.vansairforce.com/community/showthread.php?t=28871