---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Sat 09/03/16: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:14 PM - Rough running 912 UL (Hugh McKay) 2. 05:11 PM - Re: Rough running 912 UL (DHeal) 3. 05:15 PM - Re: Rough running 912 UL (Hugh McKay) 4. 06:55 PM - Re: Rough running 912 UL (Richard Girard) ________________________________ Message 1 _____________________________________ Time: 04:14:46 PM PST US From: "Hugh McKay" Subject: RotaxEngines-List: Rough running 912 UL Started to fly my Allegro 2000 (912 UL engine) today and suddenly my engine is running rough. On some earlier flights I noticed the engine wanting to =9Cburp=9D or =9Cskip=9D a little bit at idle and low rpms (2000 to 2500), however at higher rpms it seemed to smooth out. I had no symptoms while in flight. However, today when I started the engine it again was =9Cskipping=9D at low rpms. Went through the check list and came to the point where I checked both ignitions at 4000 rpm. Ran the engine up to 4000 rpm and turned off one ignition. The engine suddenly ran very rough. When I checked the other ignition the same thing happened. To say the least I did not fly. took it back to the hanger and parked it. Any suggestions as to what the problem may be? Hugh G. McKay III Denver, NC 28037 Allegro 2000 Rotax 912 UL 780 hours TSN Ph. 704-661-8271 email hgmckay@bellsouth.net ________________________________ Message 2 _____________________________________ Time: 05:11:02 PM PST US Subject: RE: RotaxEngines-List: Rough running 912 UL From: DHeal SGF2ZSB5b3Ugd2VpZ2hlZCB5b3VyIGZsb2F0cyByZWNlbnRseT8KCgpTZW50IHZpYSB0aGUgU2Ft c3VuZyBHYWxheHkgQWxwaGHihKIsIGFuIEFUJlQgNEcgTFRFIHNtYXJ0cGhvbmUKCgotLS0tLS0t LSBPcmlnaW5hbCBtZXNzYWdlIC0tLS0tLS0tCkZyb206IEh1Z2ggTWNLYXkgPGhnbWNrYXlAYmVs bHNvdXRoLm5ldD4gCkRhdGU6MDkvMDMvMjAxNiAgNDoxNCBQTSAgKEdNVC0wODowMCkgClRvOiBS b3RheCBFbmdpbmVzIDxyb3RheGVuZ2luZXMtbGlzdEBtYXRyb25pY3MuY29tPiAKU3ViamVjdDog Um90YXhFbmdpbmVzLUxpc3Q6IFJvdWdoIHJ1bm5pbmcgOTEyIFVMIAoKU3RhcnRlZCB0byBmbHkg bXkgQWxsZWdybyAyMDAwICg5MTIgVUwgZW5naW5lKSB0b2RheSBhbmQgc3VkZGVubHkgbXkgZW5n aW5lIGlzIHJ1bm5pbmcgcm91Z2guIE9uIHNvbWUgZWFybGllciBmbGlnaHRzIEkgbm90aWNlZCB0 aGUgZW5naW5lIHdhbnRpbmcgdG8g4oCcYnVycOKAnSBvciDigJxza2lw4oCdIGEgbGl0dGxlIGJp dCBhdCBpZGxlIGFuZCBsb3cgcnBtcyAoMjAwMCB0byAyNTAwKSwgaG93ZXZlciBhdCBoaWdoZXIg cnBtcyBpdCBzZWVtZWQgdG8gc21vb3RoIG91dC4gSSBoYWQgbm8gc3ltcHRvbXMgd2hpbGUgaW4g ZmxpZ2h0LgogCkhvd2V2ZXIsIHRvZGF5IHdoZW4gSSBzdGFydGVkIHRoZSBlbmdpbmUgaXQgYWdh aW4gd2FzIOKAnHNraXBwaW5n4oCdIGF0IGxvdyBycG1zLiBXZW50IHRocm91Z2ggdGhlIGNoZWNr IGxpc3QgYW5kIGNhbWUgdG8gdGhlIHBvaW50IHdoZXJlIEkgY2hlY2tlZCBib3RoIGlnbml0aW9u cyBhdCA0MDAwIHJwbS4gUmFuIHRoZSBlbmdpbmUgdXAgdG8gNDAwMCBycG0gYW5kIHR1cm5lZCBv ZmYgb25lIGlnbml0aW9uLiBUaGUgZW5naW5lIHN1ZGRlbmx5IHJhbiB2ZXJ5IHJvdWdoLiBXaGVu IEkgY2hlY2tlZCB0aGUgb3RoZXIgaWduaXRpb24gdGhlIHNhbWUgdGhpbmcgaGFwcGVuZWQuIFRv IHNheSB0aGUgbGVhc3QgSSBkaWQgbm90IGZseS4gdG9vayBpdCBiYWNrIHRvIHRoZSBoYW5nZXIg YW5kIHBhcmtlZCBpdC4KIApBbnkgc3VnZ2VzdGlvbnMgYXMgdG8gd2hhdCB0aGUgcHJvYmxlbSBt YXkgYmU/CiAKSHVnaCBHLiBNY0theSBJSUkKRGVudmVyLCBOQyAyODAzNwpBbGxlZ3JvIDIwMDAK Um90YXggOTEyIFVMCjc4MCBob3VycyBUU04KIApQaC4gNzA0LTY2MS04MjcxCmVtYWlsIGhnbWNr YXlAYmVsbHNvdXRoLm5ldAo ________________________________ Message 3 _____________________________________ Time: 05:15:35 PM PST US From: "Hugh McKay" Subject: Re: RotaxEngines-List: Rough running 912 UL No, I haven=92t. Hugh G. McKay III, P.E. Fellow, L.M. ASCE Senior Consultant Worldwide Engineering Inc. 4090 North NC Hwy. 16 Denver, NC 28037 Ph. 704-661-8271 Fax 704-483-5466 email hgmckay@bellsouth.net http://www.wwegeo.com From: DHeal Sent: Saturday, September 03, 2016 8:10 PM Subject: RE: RotaxEngines-List: Rough running 912 UL Have you weighed your floats recently? Sent via the Samsung Galaxy Alpha=84=A2, an AT&T 4G LTE smartphone -------- Original message -------- From: Hugh McKay Date:09/03/2016 4:14 PM (GMT-08:00) Subject: RotaxEngines-List: Rough running 912 UL Started to fly my Allegro 2000 (912 UL engine) today and suddenly my engine is running rough. On some earlier flights I noticed the engine wanting to =9Cburp=9D or =9Cskip=9D a little bit at idle and low rpms (2000 to 2500), however at higher rpms it seemed to smooth out. I had no symptoms while in flight. However, today when I started the engine it again was =9Cskipping=9D at low rpms. Went through the check list and came to the point where I checked both ignitions at 4000 rpm. Ran the engine up to 4000 rpm and turned off one ignition. The engine suddenly ran very rough. When I checked the other ignition the same thing happened. To say the least I did not fly. took it back to the hanger and parked it. Any suggestions as to what the problem may be? Hugh G. McKay III Denver, NC 28037 Allegro 2000 Rotax 912 UL 780 hours TSN Ph. 704-661-8271 email hgmckay@bellsouth.net ________________________________ Message 4 _____________________________________ Time: 06:55:35 PM PST US From: Richard Girard Subject: Re: RotaxEngines-List: Rough running 912 UL Have you checked the ignition boxes to see if they are the known bad ones? Does the engine exhibit any trouble starting? Have you checked for a broken spark plug? When was the last time you trimmed and reseated the plug wires at each end (they screw on)? Rick Girard On Sat, Sep 3, 2016 at 6:14 PM, Hugh McKay wrote: > Started to fly my Allegro 2000 (912 UL engine) today and suddenly my > engine is running rough. On some earlier flights I noticed the engine > wanting to =9Cburp=9D or =9Cskip=9D a little bit at idle and low rpms (2000 to > 2500), however at higher rpms it seemed to smooth out. I had no symptoms > while in flight. > > However, today when I started the engine it again was =9Cskipping =9D at low > rpms. Went through the check list and came to the point where I checked > both ignitions at 4000 rpm. Ran the engine up to 4000 rpm and turned off > one ignition. The engine suddenly ran very rough. When I checked the othe r > ignition the same thing happened. To say the least I did not fly. took it > back to the hanger and parked it. > > Any suggestions as to what the problem may be? > > Hugh G. McKay III > Denver, NC 28037 > Allegro 2000 > Rotax 912 UL > 780 hours TSN > > Ph. 704-661-8271 > email hgmckay@bellsouth.net > -- =9CBlessed are the cracked, for they shall let in the light.=9D Groucho Marx ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rotaxengines-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RotaxEngines-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/rotaxengines-list Browse Digests http://www.matronics.com/digest/rotaxengines-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.