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  #1  
Old 06-01-2018, 04:12 PM
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bkervaski bkervaski is offline
 
Join Date: Mar 2017
Location: Birmingham, Alabama
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Default First Start!

First start today, woohoo!

Fairly uneventful except there was an odd CHT/EGT issue on #3.

In the first 10-15 seconds the CHT shot up to 1000 degrees then a big red X appeared.

The EGT never went above 400 #3.

All the others leveled right out as expected.

The physical temps by touch were about the same for #3 as the others, didn't have a temp gun with me.

If it was just one of the sensors I would think just a bad sensor/wiring problem but both is throwing me off.

Does anyone have any suggestions or ideas before I start troubleshooting?

Not very helpful but here's a pic after I shut it down and was cooling, the sensor recovered, didn't think to take a pic while it was running.

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  #2  
Old 06-01-2018, 05:09 PM
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Yay!! Big day.

Sounds like the CHT and EGT are swapped in the harness.
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  #3  
Old 06-01-2018, 05:11 PM
TS Flightlines TS Flightlines is offline
 
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Congrats Bill!----youre almost ready!
Tom
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  #4  
Old 06-01-2018, 06:07 PM
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That is super! You sure showed up and got with it. Congrats.
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  #5  
Old 06-01-2018, 07:47 PM
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Pat Hatch Pat Hatch is offline
 
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Good show!

Take your heat gun to each of the 8 sensors to make sure they correspond with the proper EIS indicators, thus confirming that they are all wired correctly.
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  #6  
Old 06-01-2018, 08:59 PM
n982sx n982sx is offline
 
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It's real easy to get a wiring error in those 16 wires. I had an - off by one error - in my harness from Stein. Easy to do, Josh unknowingly skipped a pin in the connector after the first five. A couple of temps were correct in mine and then the rest were all screwy.

As another noted, appears that the a pair of EGT and CHT wires got swapped.
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  #7  
Old 06-02-2018, 12:37 AM
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Cool!

I estimate that I am about 3 months in trail
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  #8  
Old 06-02-2018, 09:55 AM
rapid_ascent rapid_ascent is offline
 
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Pat,

That is a great idea for pre first start too.
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  #9  
Old 06-02-2018, 10:51 AM
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Jesse Jesse is offline
 
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Location: X35 - Ocala, FL
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Quote:
Originally Posted by n982sx View Post
It's real easy to get a wiring error in those 16 wires. I had an - off by one error - in my harness from Stein. Easy to do, Josh unknowingly skipped a pin in the connector after the first five. A couple of temps were correct in mine and then the rest were all screwy.

As another noted, appears that the a pair of EGT and CHT wires got swapped.
I had the same thing happen. It makes it tough to troubleshoot unless you know how the connector is supposed to look.
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  #10  
Old 06-02-2018, 11:13 AM
Tom Martin Tom Martin is offline
 
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Location: Ontario, Canada
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Use Pat Hatch's idea about using a heat gun to trouble shoot your sensor wires.
Try to keep engine starts to the bare minimum. First start to confirm oil pressure and that sensors are working, one minute or so.
Your engine came with a manual and it has information regarding the proper break in of a engine.

The main importance is as few starts as absolutely necessary and definitely no taxi tests!!
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