jsinar Posted October 3, 2012 Report Share Posted October 3, 2012 I finally put my 290s in, I had tried 300s but they bogged a little, 290's rev out nice, and I went ahead and put 27.5 pilots in to see if it would start easier. I was having an issue when idling, if I hit the throttle it would drop back down, slightly above idle, then it would slowly go back to idle, I fixed that by playing with the idle screws, now it'll rev up and drop back to idle. But How do I know if the airscrews are adjusted right? I've went from 2 to .5 turns out without any change in idle or anything. Only thing I noticed was the amount of smoke at idle. I did like this site said www.dfn.com/agservices/jetfaq.html about setting the screws, then start it, let it ldle for about 10 minutes then look at the plugs, no matter where I set the screws the plugs look almost new, very very light discoloration, and has a film of oil on them. Mods are in my signature, I'm about 400 ft above sea level. Quote Link to comment Share on other sites More sharing options...
SAVAGE420 Posted October 17, 2012 Report Share Posted October 17, 2012 So what's it exactly doing that you don't like? Maybe im just not reading it right.... Quote Link to comment Share on other sites More sharing options...
dave5.0 Posted October 18, 2012 Report Share Posted October 18, 2012 Air screws need to b equal. Set a decent idle with the idle screws. Then adjust the air screws a little at a time till you get the highest idle possible. Not much to it. Quote Link to comment Share on other sites More sharing options...
jsinar Posted October 18, 2012 Author Report Share Posted October 18, 2012 It clicked on how to tune it about an hour after I posted this. lol. Quote Link to comment Share on other sites More sharing options...
SAVAGE420 Posted October 18, 2012 Report Share Posted October 18, 2012 DECENT! Quote Link to comment Share on other sites More sharing options...
Wheelman Chassis Posted October 18, 2012 Report Share Posted October 18, 2012 Air screws need to b equal. Set a decent idle with the idle screws. Then adjust the air screws a little at a time till you get the highest idle possible. Not much to it. I think there is more to it....like: how it returns to idle after a rev transition from idle/pilot-needle most people dont realize but you can often adjust a range of 1-2 pilot sizes in the full travel in the air screw. So imo the pilot and air screw play a equal roll in throttle response and over all tuning . Chris Quote Link to comment Share on other sites More sharing options...
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