 |
Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
|
| View previous topic :: View next topic |
| Author |
Message |
CDE2fly(at)aol.com
Guest
|
 Posted: Sat Jan 17, 2009 7:18 pm Post subject: 912S Ignition Wiring Question |
 |
|
I'm nearing the completion of a Model 7 with a 912S installed and added oil to the engine today. While I had the plugs pulled to purge air from the oil system, I checked for spark by cranking the engine with the starter and found none (the plug body was grounded to the engine case). Based on some preliminary checks, it appears that the ignition coil wires to the ignition switch are grounded while in the ignition switch is in the "both" position.
I'm planning to trouble shoot a bit more tomorrow and plan to start by disconnecting the "brown" wires from the ignition module to the ignition switch and see if I have a spark. Can anyone confirm that this would be the correct approach? It seems to me that the ignition switch simply grounds the ignition coil(s) to eliminate spark with the key in the "off" position (and of course the left and right coil with the key in the appropriate position). With the ignition switch out of the ignition coil loop, I assume I should have continuous spark as I crank the engine over with the starter. Can anyone confirm?
Thanks!
A Good Credit Score is 700 or Above. See yours in just 2 easy steps!
[quote][b]
| | - The Matronics Kitfox-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Kitfox-List |
|
|
|
| Back to top |
|
 |
ppeerenbo(at)charter.net
Guest
|
| Posted: Sun Jan 18, 2009 4:47 pm Post subject: 912S Ignition Wiring Question |
|
|
Rotax says not to check there ignition this way. You can damage the ignition module. I have done this carefully and its hard to see the spark. has to be in a dark unlit hanger, and small high intensity spark.
Paul
Model IV 912UL
[quote] ---
| | - The Matronics Kitfox-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Kitfox-List |
|
|
|
| Back to top |
|
|
CDE2fly(at)aol.com
Guest
|
| Posted: Sun Jan 18, 2009 5:37 pm Post subject: 912S Ignition Wiring Question |
|
|
Thanks Paul - is there a recommended way to check that the plugs are firing? I can forward pictures of my wiring arrangement if that would be hlepful.
Chris
Nearly complete Model 7 912S
Inauguration '09: Get complete coverage from the nation's capital.
[quote][b]
| | - The Matronics Kitfox-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Kitfox-List |
|
|
|
| Back to top |
|
|
ppeerenbo(at)charter.net
Guest
|
| Posted: Tue Jan 20, 2009 5:49 pm Post subject: 912S Ignition Wiring Question |
|
|
Other than ohm meter checks or the people at Lockwood have a tester of some sort I do not know of a recommended way. I had a starting problem that drove me nuts, I ohms checked everything but when I would call about a spark check they all would tell me I'm going to blow my ignition boxes. I did get my engine started fuel mixture issue. Do you think you have a problem?
Paul
N120DG 912UL 350TT
[quote] ---
| | - The Matronics Kitfox-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Kitfox-List |
|
|
|
| Back to top |
|
|
CDE2fly(at)aol.com
Guest
|
| Posted: Tue Jan 20, 2009 6:35 pm Post subject: 912S Ignition Wiring Question |
|
|
Paul:
I did some additional trouble shooting and the ignition and starting circuits are functioning correctly as far as the key positions are concerned. I spoke with John McBean at Kitfox Aircraft and he checked the resistance on the magneto pin from the ignition module wire harness plug on his 912S and had +/- 300 ohms. I confirmed the same resistance on my pin.
After discussing with John, we concluded the best approach would be to add some fuel to the tank and see if it will start. Just seems strange that there is NO visible spark even in near total darkness. John also indicated that checking the spark visually by grounding the plug body with it out of the engine is not advised with the electronic ignition.
I plan to try a first start this weekend so I'll report on my findings. Thanks for your help and advise.
Chris
Kitfox 7 - 912S
Inauguration '09: Get complete coverage from the nation's capital.
[quote][b]
| | - The Matronics Kitfox-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Kitfox-List |
|
|
|
| Back to top |
|
|
Float Flyr
Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland
|
| Posted: Tue Jan 20, 2009 6:49 pm Post subject: 912S Ignition Wiring Question |
|
|
You could use an inductive tach like the TinyTach. The induction wire just wraps around the high tension lead to be tested. If you see any reading on the tach then you have firing on that wire. No chance of blowing an ignition box.
Noel
From: owner-kitfox-list-server(at)matronics.com [mailto:owner-kitfox-list-server(at)matronics.com] On Behalf Of Peerenboom's
Sent: Tuesday, January 20, 2009 10:18 PM
To: kitfox-list(at)matronics.com
Subject: Re: 912S Ignition Wiring Question
Other than ohm meter checks or the people at Lockwood have a tester of some sort I do not know of a recommended way. I had a starting problem that drove me nuts, I ohms checked everything but when I would call about a spark check they all would tell me I'm going to blow my ignition boxes. I did get my engine started fuel mixture issue. Do you think you have a problem?
Paul
N120DG 912UL 350TT
[quote]
---
| | - The Matronics Kitfox-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Kitfox-List |
|
_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats |
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
