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Jabiru engine coughing

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zodiacjeff(at)msn.com
Guest

Posted: Sun Oct 07, 2007 8:26 am Post subject: Jabiru engine coughing

<?xml:namespace prefix="v" /><?xml:namespace prefix="o" /><![endif]-->     What do the Jabiru engine experts  suggest?

Thanks

Lynn

  

 Hi Lynn,

  

 I won't claim any expertise with the 3300 but I really enjoy mine. 

  

 Why not contact Andy Silvester, your local distributor in FL, to ask  him.  Andy is always tactful and thorough in his answers and usually  prompt.  He will be the person you'll need for replacement parts and advice  through your Jab flying days.

  

 http://www.suncoastjabiru.com/  A  phone call Monday would be ideal.

  

 My suggestion would be you check all fuel strainers (if any) and especially  the gascolator screen for foreign matter.  Check the coil to magnets gap on  both coils - should be .010.  Go to Pete's valuable info site  http://www.usjabiru.com/technical-tips.html   and see if the "idle adjustment" settings are correct.  Is this a "newer"  engine with hydraulic lifters?  If solid lifters, when did previous owner  do last adjustment?  How many hours on engine?

  

 Any possibility of water in gas since you're now in FL?

  

 best of luck  jeff  HDS/3300 305 hours

   [quote][b]

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IFLYSMODEL(at)aol.com
Guest

Posted: Sun Oct 07, 2007 3:42 pm Post subject: Jabiru engine coughing

Hey Jeff: I forgot to include in my first message that I had checked the  magnetos (New coils, rotors and caps less than 50 hours ago) and they showed  about 15 RPM drop per side, but the engine did the same thing on left, right or  both mags. The engine is the older, solid lifter variety and the previous owner  states, as well as his log book entries, that the lifter clearances have been  checked. I did not find any water in the fuel. The engine has less than 150  hours since new.

 Lynn





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tonyplane(at)bellsouth.ne
Guest

Posted: Sun Oct 07, 2007 8:53 pm Post subject: Jabiru engine coughing

Lynn,

  

 Don't know if it will help, but I once had the  terminal end of one of my spark plugs (the little screw on tip) come completely  loose.  

 I noticed it when I removed the plug wire and saw  the threaded end where the tip screws on.  The tip was still in the plug  wire boot end. I had had a "more than normal" rpm  drop on a mag check (usually it is not really noticeable) and was going to check  my plugs to see if one was fouling.

  

 I have found some of the terminal tip ends loose  during my preventative maintenance checks and now always make sure  they are all tightened.

  

 Could you better describe the conditions under  which the cough occurs?  Could you also better define the  "cough"?  And of course, if you do find the problem. please let us all know  the corrective action.

  

 Based on my experience, I believe you are really  going to like flying behind the Jab.

  

 Tony Graziano

 Zodiac 601XL; JAB 3300A; N493TG; 304  hours

  

  

 ----------

             Subject:              RE: Jabiru engine        coughing        From:              IFLYSMODEL(at)aol.com ([email]IFLYSMODEL(at)aol.com?subject=RE:%20Jabiru%20engine%20coughing&replyto=cb1.1dbcbcf9.343a7eea(at)aol.com[/email])        Date:              [b]Sun Oct 07 - 4:42        PM[/b]  	  Quote: 	
		   	  Quote: 	
		  Hey Jeff: I forgot to include in my first message that I had checked the  

magnetos (New coils, rotors and caps less than 50 hours ago) and they showed  

about 15 RPM drop per side, but the engine did the same thing on left, right or



both mags. The engine is the older, solid lifter variety and the previous 

owner  states, as well as his log book entries, that the lifter clearances have



been  checked. I did not find any water in the fuel. The engine has less than 

150  hours since new.

Lynn

	
	
 



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