582 High EGT'S HELP

[TY2068]

Have you ever tied the plane down securely and run the engine wide open to see what max static revs are ?

[LSaupe]

Here is further detail on the floats:

A NEW Alert Service Bulletin has been issued which applies to a very limited range of 912, 914, and 2-stroke engines, as well as any engines which have been equipped with ROTAX part number 861185 floats during engine repair, maintenance or general overhaul as of May 09, 2016.

Due to manufacturing deviations, certain 861185 carburetor floats supplied as spare parts after May 9th, 2016, and/or installed on specific serial number engines and carbs (see the ASBs for specific serial number ranges), may have the outer surface "peel" or “flake” from engine vibration.

Serial number ranges are detailed in ASB-912-069 / ASB-914-051 (certified engines) and ASB-912-069UL / ASB-914-051UL / ASB-2ST-003 (UL engines).

Affected floats must be replaced with current-issue 861185 floats, which are now marked with three dots for positive identification.

http://www.rotax-owner.com/en/videos.../459-asb912069

[Bluebird19kf]

I think I figured it out. I found that the choke cable on the one carb was to tight allowing it to be engaged a little. I fixed that and it appears to be way better. Egts match and do not exceed 1200 at any rpm. It is still rough at lower rpms but I believe I may be able to solve that with tunning the pilot jets and airscrews??? I'm waiting for better weather for more testing.

[Bluebird19kf]

It fixed the stumbling in the midrange completely. I have it pitched now for 6200-6300 on climb out. Is that about right?

[LSaupe]

Seems a little low on climb out (maybe more like 6400-6500) though I know some who run there. Anticipate it to run rough below say around 2500 rpm. I only go below during shut down and initial start up then bring it up to 2500 to stop the gearbox chatter.

[Bluebird19kf]

Roger that. Right now it is a little rough up to like 3200 but I have in 60 pilots while troubleshooting. I have 45's I think I'm going to try. That should make that better right?? That also g with air screw adjustment. How many turns are you running.

[LSaupe]

Yep 45s will help alot. I think I am using 50's at 1 & 3/4 turn