RoughLandin
Posts: 134
Joined: 7/1/2003
From: Duvall,
WA, USA
Status: offline
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Hey guys I need some help, my engine doesn't want to idle.
I have reset both needle settings back to the stated starting points Scott provides and still no idle (1 3/8 highspeed needle and 1 1/8 low speed needle). When first started it idles fast (2500rpm) after about 20 seconds I will manually blip the throttle and it will come down on RPM (1500rpm). Whenever I throttle back to idle it just keeps slowing down, after about 10 seconds at idle it continues to slow until it's not responsive to any increased throttle input, it just slows until it finally dies. WOT and midrange is pretty good but with a very slight hesitation only third tank of fuel. I have leaned the low end needle to 3/4 out with no change, I have richened it to 1 3/8 same deal, no change. I have leaned and fattened the high speed needle with as I would expect little if any effect on idle. When I pull the plug it's quite wet; this leads me to beleive it's way rich on the bottom end.
I should say the engine was running great until I flammed out and it went in and broke the prop and firewall. An improved battery redundancy setup later I had the engine running great at home, idle, transition and WOT. The crankshaft is fine not bent, timing seams fine at WOT and wouldn't expect it to be bad since it wasn't running when it went in. With the engine back in business and running well, I went to the field and proceeded to tinker for 6 hrs before finally giving up... Related issue? This engine has never liked to restart after it dies on it's own or is shut off via kill switch, it was this way even before going in. I can flip like crazy for 15 minutes and hardly get a pop out of it at any throttle setting. If I leave it for 10-15 minutes with the piston at mid stroke it will start on the first flip.
 I would really like help with:
1) getting the plane to idle so I can fly
2) figure out why it doesn't want to restart when it was just running
- I have changed spark plugs and gapped to .25
- refreshed fuel 3rd gallon (45:1 mix Premuim Fuel) but still get a fare amount of sludge from the exhaust
- Battery is fully charged and regulated to 4.8v via Smart-Fly IngReg
- Prop Xoar 22x8 for break-in, WOT RPM is 6960
- Tempature is at about 220-230 degrees F
- Flying field at about 400 feet above sea level and my house is at about 600. I have never had problems with this in the past
Thanks Brian
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When she comes down, just hope it's still under control
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RE: Brillelli 366GT ... - 
