---------------------------------------------------------- Pulsar-List Digest Archive --- Total Messages Posted Sun 06/09/13: 6 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 08:11 AM - Engine problems, stuck in Red Bluff, CA (Sonja Englert) 2. 09:40 AM - Re: Engine problems, stuck in Red Bluff, CA (Dennis Adams) 3. 10:22 AM - Re: Engine problems, stuck in Red Bluff, CA (pulsar331@sbcglobal.net) 4. 02:27 PM - Re: Engine problems, stuck in Red Bluff, CA (freedom4life) 5. 04:04 PM - Re: Engine problems, stuck in Red Bluff, CA (Bob Heiser) 6. 06:57 PM - Re: Engine problems, stuck in Red Bluff, CA (everettmcollier) ________________________________ Message 1 _____________________________________ Time: 08:11:16 AM PST US Subject: Pulsar-List: Engine problems, stuck in Red Bluff, CA From: Sonja Englert Hello Everyone, I am stuck at the Red Bluff airport because me Rotax 912 is running really rough and I have no idea what it could be. It is worst below 3000 rpm, smoother at higher rpm. Switching tanks and boost pump on/off has no effect. Switching ignition hs no effect. I don't see anything loose, leaking or otherwise wrong. It has enough fuel and oil and the spark plugs look good. It has done this once before and after several startups and short runs on the ground it smoothed out and run fine for the next 5 h. Now it is worse and not smoothing out. Does anyone have any ideas? Sonja ________________________________ Message 2 _____________________________________ Time: 09:40:29 AM PST US From: Dennis Adams Subject: Re: Pulsar-List: Engine problems, stuck in Red Bluff, CA Ignition grounds? Sent from an IPad On Jun 9, 2013, at 9:12 AM, Sonja Englert wrote: Hello Everyone, I am stuck at the Red Bluff airport because me Rotax 912 is running really rough and I have no idea what it could be. It is worst below 3000 rpm, smoother at higher rpm. Switching tanks and boost pump on/off has no effect. Switching ignition hs no effect. I don't see anything loose, leaking or otherwise wrong. It has enough fuel and oil and the spark plugs look good. It has done this once before and after several startups and short runs on the ground it smoothed out and run fine for the next 5 h. Now it is worse and not smoothing out. Does anyone have any ideas? Sonja * * ________________________________ Message 3 _____________________________________ Time: 10:22:20 AM PST US Subject: Re: Pulsar-List: Engine problems, stuck in Red Bluff, CA From: pulsar331@sbcglobal.net Check the welch plugs on the top of the carbs. I had one come loose which ca uses that diaphragm to get out of sync with the other carb. Hope that helps, Bill Coleman On Jun 9, 2013, at 11:09 AM, Sonja Englert wrote: > Hello Everyone, > > I am stuck at the Red Bluff airport because me Rotax 912 is running really rough and I have no idea what it could be. It is worst below 3000 rpm, smoo ther at higher rpm. Switching tanks and boost pump on/off has no effect. Swi tching ignition hs no effect. I don't see anything loose, leaking or otherwi se wrong. It has enough fuel and oil and the spark plugs look good. > It has done this once before and after several startups and short runs on t he ground it smoothed out and run fine for the next 5 h. Now it is worse and not smoothing out. > > Does anyone have any ideas? > > Sonja > > ========================== ========= ========================== ========= ========================== ========= ========================== ========= > ________________________________ Message 4 _____________________________________ Time: 02:27:51 PM PST US From: "freedom4life" Subject: Re: Pulsar-List: Engine problems, stuck in Red Bluff, CA Hi Sonja Check the plugs for soot on the insulator. If you don=99t have a second set of plugs to try then close up the plug gap to about 18 =93 20 thou. This will prevent the spark tracking down the insulator. The other thing you might look for is an HT lead that has rubbed through on the block somewhere. I have had both issues happen to me. Cliff From: Sonja Englert Sent: Monday, June 10, 2013 3:09 AM Subject: Pulsar-List: Engine problems, stuck in Red Bluff, CA Hello Everyone, I am stuck at the Red Bluff airport because me Rotax 912 is running really rough and I have no idea what it could be. It is worst below 3000 rpm, smoother at higher rpm. Switching tanks and boost pump on/off has no effect. Switching ignition hs no effect. I don't see anything loose, leaking or otherwise wrong. It has enough fuel and oil and the spark plugs look good. It has done this once before and after several startups and short runs on the ground it smoothed out and run fine for the next 5 h. Now it is worse and not smoothing out. Does anyone have any ideas? Sonja ________________________________ Message 5 _____________________________________ Time: 04:04:45 PM PST US From: Bob Heiser Subject: Re: Pulsar-List: Engine problems, stuck in Red Bluff, CA Check the compression. After running look for the cooler cylinder with one of thepoint temperaturemeters *God Bless Bob (W7IKT) Carol (N5CBQ) Heiser* On 6/9/2013 10:09 AM, Sonja Englert wrote: > Hello Everyone, > I am stuck at the Red Bluff airport because me Rotax 912 is running > really rough and I have no idea what it could be. It is worst below > 3000 rpm, smoother at higher rpm. Switching tanks and boost pump > on/off has no effect. Switching ignition hs no effect. I don't see > anything loose, leaking or otherwise wrong. It has enough fuel and oil > and the spark plugs look good. > It has done this once before and after several startups and short runs > on the ground it smoothed out and run fine for the next 5 h. Now it is > worse and not smoothing out. > Does anyone have any ideas? > Sonja > * > > > * > > No virus found in this message. > Checked by AVG - www.avg.com > ________________________________ Message 6 _____________________________________ Time: 06:57:24 PM PST US Subject: Re: Pulsar-List: Engine problems, stuck in Red Bluff, CA From: everettmcollier Sonja, We live in Lake California, about 10 miles north of Red Bluff. I have no idea what the problem is, but we are close, only about 18 mi by car. If you could use help with tools or anything please call 530-347-4988. Should be happy to assist in any way I can. Can not fly down though my nose gear is under repair. Everett Sent from my iPad. ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message pulsar-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Pulsar-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/pulsar-list Browse Digests http://www.matronics.com/digest/pulsar-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.