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  #11  
Old 07-08-2011, 08:40 PM
MS19087's Avatar
MS19087 MS19087 is offline
 
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Default Checked timing again today . . .

Quote:
Originally Posted by elippse View Post
Basically the symptoms seem to suggest that the unit is not coming out of TDC timing used for starting. This can be verified with a timing light.
Definitely getting some crazy results when checking the timing with the strobe. The EI appears to be firing 4 times somewhere around the correct advanced mark (which is 35deg advanced for a hi compression jug). This is a plasma II+ which has one spark, not several triggers like the III.

Today also did lots of searching for possible mp leaks. Non found but will test fly again tomorrow. Klaus and marlin have offered lots of suggestions. May be time to send the plasma II back to LSE for a bench test.

I will post my flight test results later this weekend. Thanks for your comments.
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  #12  
Old 07-10-2011, 04:00 PM
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G3i Ignition G3i Ignition is offline
 
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Default

The engine also appears not to be making full power - only 82% on take off WOT. Any ideas?

On your MAP reference, is the MAP source tee?d to supply the LSE and engine monitor together? Possible leakage? Just a thought.
Thomas S.
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Last edited by G3i Ignition : 07-10-2011 at 04:05 PM.
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  #13  
Old 07-10-2011, 04:32 PM
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Just curious, do you have a restrictor in the MAP sensor line? Would pulsations in the MAP sensor line wack out the EI brain box?
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N526RV RV7A Tip Up, IO360 180 W/Hartzel BA prop.
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  #14  
Old 07-10-2011, 07:49 PM
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Default No restrictor

On mp lines. Is this recommended? My a&p feels it is a good idea but doesn't know if this is having any effect on my issues.
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  #15  
Old 07-10-2011, 08:21 PM
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It can't be good for it. a smooth manifold pressure indication to the brain box has to be better than a pulsating signal.
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N526RV RV7A Tip Up, IO360 180 W/Hartzel BA prop.
Flying ~950 hours since Aug 2010
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Construction Log
?The secret of getting ahead is getting started. The secret of getting started is breaking your complex overwhelming tasks into small manageable tasks, and then starting on the first one.?

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  #16  
Old 07-10-2011, 09:21 PM
elippse elippse is offline
 
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If the MAP line was too restricted, the MAP wouldn't be as high and the unit would be more advanced giving more, not less power. If the EI is operating at TDC the power will be much lower. It isn't necessary to provide a restriction to smooth the MAP; that is handled inside the unit electronically.
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