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right ignition failure when hot

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rocclobster(at)hotmail.co
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Posted: Sun Sep 09, 2007 12:41 pm Post subject: right ignition failure when hot

Hello,

  

 This is my first posting on this list.  The  engine is a Jabiru 3300.  This is not my aircraft.  I am preparing it  for sale for my friend's widow.

  

 When flying the Zenith Zodiac 601 XL today  I found that the right ignition was dead when I was performing the  pre-shutdown tests.  It was fine when I performed the run-up.

  

 I waited about 30 minutes, tested it again and it  worked fine.  All wiring is intact and in pristine condition.   The ignition switch is functioning properly.  I went for another 30 minute  flight and once again found that the right ignition was dead when performing the  pre-shutdown testing.  After another 30 minutes it was functioning  again.  I have flown the aircraft 25 hours recently and this is the only  problem that I have experienced.

  

 Could this be a coil problem, breaking down when  heated?  Is it more likely the transitorized ignition system?

  

 Any suggestions on where to start troubleshooting  would be appreciated.

  

 Thanks

  

 Colin Noseworthy

  

  

   [quote][b]

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jetboy

Joined: 22 Jul 2006
Posts: 233

Posted: Mon Sep 10, 2007 2:14 am Post subject: Re: right ignition failure when hot

Colin,



Its very likely the coil, this problem had been occuring to earlier coils, have not heard much trouble since the 'leading GX' coils were replaced with the 'TEK' ones some time ago. Also there should be fitted or retrofitted some heat insulating washers under the coils and air cooling tubes to cool the coils, details in the installation instructions on dealers websites, or in the series of articles called 'jaba chat' off the jabiru website. The 'transistorised' parts are inside the coil packs, just bolt in a replacement coil.



Ralph

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Ralph - CH701 / 2200a

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