What do you guys think about this GAMI spread

[bradp]

Hi All,

Wondering what you think about this GAMI spread?  It's an old data pull from my JPI, but the pattern is persistent on more recent flights.  The behavior of my #1 has never quite been in line with the others.  Peaks later and doesn't fall off quite as much as the other three.  Cyl #1 is acting "richer", but the spread FF / "Gami" spread is 0.3, which is pretty good for stock injectors. 

Since this went to all fine wires, still the same pattern.

Swapped EGT probes, still the same pattern.

We did a high voltage lead test at annual.  I've been thinking about ignition harness replacement as I'm getting "engine noise" through the headset and some of the shielding is fraying.  IA says don't worry so much about it and likes the look of the leads. 

I've done a few LOP in flight mag checks s... but the only one I have handy is not reflective of the new fine wires.  I'll have to pull some more data from the JPI next time I visit her to see if it follows the same pattern. 

It's one of those things that bothers me a little bit because it's not in line with the others. 

My hunch is that it's a mag / lead issue, but just a hunch. 

What do you guys think?

-Brad

 

 

 

[carusoam]

Response posted in the other (?) thread...

-a-

[bradp]

Apologies for the double post. And thanks for your thoughtful reply Anthony.


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