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  #1  
Old 10-29-2015, 06:26 PM
Rayh's Avatar
Rayh Rayh is offline
 
Join Date: Sep 2013
Location: Kingsland, GA
Posts: 82
Default First start

Today was the day. Finally pushed the 12 out and fired it up. Started fine. Two issues though. After about 5 minutes, CHT left and right went above above 200 degrees. I shut it down before they got any higher. Also, right EGT on dynon not registering any temps. I pulled the top cowl off and everything appeared fine. I will dig further into troubleshooting tomorrow.
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  #2  
Old 10-29-2015, 06:40 PM
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Just checked skyview. At static the right EGT is registering the temp. Apparently while running it is inop. Ideas????
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  #3  
Old 10-29-2015, 07:14 PM
DHeal DHeal is offline
 
Join Date: Sep 2006
Location: Windsor, California
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Double-check all your two right-side EGT push-on connectors (the ones just forward of the firewall). The EGT connectors need a really good electrical connection.
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EAA #23982 (circa 1965) - EAA Technical Counselor and Flight Advisor; CFI - A&I
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  #4  
Old 10-29-2015, 07:34 PM
Mich48041 Mich48041 is offline
 
Join Date: Apr 2008
Location: Riley TWP MI
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Make sure that all of the air is purged out of the coolant system.
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  #5  
Old 10-29-2015, 07:54 PM
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Rayh Rayh is offline
 
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Location: Kingsland, GA
Posts: 82
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I will check the connections. What procedure is used to purge the air from the coolant?
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  #6  
Old 10-29-2015, 09:10 PM
RFSchaller RFSchaller is offline
 
Join Date: Oct 2010
Location: Phoenix, AZ
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To purge my coolant system I bounced the plane around on the gear to shake loose the bubbles. I'm sure there's a technical term for it, but it escapes me!😀
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  #7  
Old 10-30-2015, 06:19 AM
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Rayh Rayh is offline
 
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I will do just that. I will bounce it around and make my neighbors think I've done went crazy. 😂
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  #8  
Old 10-30-2015, 08:13 AM
mikefox mikefox is offline
 
Join Date: Feb 2011
Location: San Jose, CA
Posts: 80
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Can you confirm the two plastic plugs were removed from the radiator? These are black colored making it hard to see them just inside the metal intake and exit tubes of the radiator where the hose is clamped clamped on.

And congrats on getting to this stage of the build too! You'll be flying soon.
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  #9  
Old 10-30-2015, 08:57 AM
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DaleB DaleB is offline
 
Join Date: Sep 2012
Location: Omaha, NE (KMLE)
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Quote:
Originally Posted by Rayh View Post
I will do just that. I will bounce it around and make my neighbors think I've done went crazy. 😂
Building an airplane in your garage didn't already do that?

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RV-12 # 222 N980KM "Screamin' Canary" (bought flying)
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  #10  
Old 10-30-2015, 03:30 PM
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Rayh Rayh is offline
 
Join Date: Sep 2013
Location: Kingsland, GA
Posts: 82
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I went out bounced the plane around and also took the hoses off the radiator to ensure I didn't leave the plugs in it. The plugs had been removed and the radiator was full of coolant.
Performed another start up. Within minutes, the CHTs raised to over 200 degrees and kept climbing.
Still no solution. Maybe water pump? Not sure on a brand new engine.
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