---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Wed 07/11/12: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 01:41 AM - Re: 912ULS - Rough start & Rough on one magnet (LAURENS yannick) ________________________________ Message 1 _____________________________________ Time: 01:41:09 AM PST US From: LAURENS yannick Subject: Re: Europa-List: 912ULS - Rough start & Rough on one magnet First : change the battery; I had the same pb, and new battery "odissey" solved the probl=E8m Regards yannick LAURENS F PSCZ Le 10 juil. 12 =E0 11:18, Sidsel & Svein Johnsen a =E9crit : > No two symptoms are alike, and I do not find what I am experiencing > in the Europa List archives: > > - Cold start with choke, throttle idle: Instant ignition, > VERY rough running for one-two seconds, then smooth (see below, hwr). > - Warm start: No choke, some throttle: A little rough for > one ' two seconds, then smooth (see below, hwr). > - Magnet check @ 4 000 rpm: rpm drops are well within > limits, also differential rpm drop (abt 50 rpm). Hwr, on magnet A > it runs a little rough, but not much. Smooth on B. > > This happens every time I start up, exactly the same =93behavior=94, so > it is a little difficult to imagine that a poor connection/broken > wire strands in the ignition circuit is the cause. One would in > such case expect some variation e.g. in the time it takes to get > smooth running, wouldn=92t one? > > I have replaced all the spark plugs. No improvement, neither re. > starting nor magnet check. The old plugs were all looking good, > light greyish-brown colour and no soot deposits. > > I have checked that choke & throttle on both sides work in sync. > > The service agent for Scandinavia suggest that this may not have a > common cause. He recommends the following: > > - Install new battery, the 912ULS is a hard one to turn > (about time to do this, but I do not think this is the cause). > - Synchronize the carbs (the symptoms began only 4 hours > flying time after last synchronization). May cause the symptoms at > mag.check, he says. > - Check the ignition wires at the electronic boxes on top > of engine and to/on the plugs, with the engine idling. > > Any other suggestions will be very much appreciated. > > Regards, > Svein > LN-SKJ > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message europa-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Europa-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/europa-list Browse Digests http://www.matronics.com/digest/europa-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.