 |
Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
|
| View previous topic :: View next topic |
| Author |
Message |
gfmjr_20(at)hotmail.com
Guest
|
 Posted: Tue Aug 27, 2013 2:39 pm Post subject: 912uls hard starting |
 |
|
Sorry about the confusion in the title
From: gfmjr_20(at)hotmail.com
To: rotaxengines-list(at)matronics.com
Subject: RE: RotaxEngines-List: Running 582 Engines LOP
Date: Tue, 27 Aug 2013 17:19:08 -0400
Just wanted to check with the group before I begin my carb rebuilds. I have a 912uls on a Zodiac 601XLB that has started to be hard starting , in fact it will not start now unless I spray starting fluid into the air intake. Only did it once to convince myself it was a fuel issue. the engine started and would restart after an hour. However, if I leave the plane for a week or so it will not start. The engine acts like it is not getting fuel. I've pulled the carb bowls and all looks fine. Fuel in bowl and fuel is about 1/2 inch from top. Engine has 450 hours without a carb rebuild. Any other ideas what it could be? All input appreciated
Thanks
George
[quote]
===========
-List" target="_blank">http://www.matronics.com/Navigator?RotaxEngines-List
===========
http://forums.matronics.com
===========
="_blank">http://www.matronics.com/contribution
===========
[b]
| | - The Matronics RotaxEngines-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?RotaxEngines-List |
|
|
|
| Back to top |
|
 |
rickofudall
Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA
|
| Posted: Tue Aug 27, 2013 8:47 pm Post subject: 912uls hard starting |
|
|
George, Do you have ignition modules p/n 966 726? These are a known problem and give symptoms you describe. If you do have these part number ignition modules, call Lockwood and ask to talk to Aaron.
Rick Girard
do not archive
On Tue, Aug 27, 2013 at 5:38 PM, george may <gfmjr_20(at)hotmail.com (gfmjr_20(at)hotmail.com)> wrote:
| Quote: | Sorry about the confusion in the title
From: gfmjr_20(at)hotmail.com (gfmjr_20(at)hotmail.com)
To: rotaxengines-list(at)matronics.com (rotaxengines-list(at)matronics.com)
Subject: RE: Running 582 Engines LOP
Date: Tue, 27 Aug 2013 17:19:08 -0400
Just wanted to check with the group before I begin my carb rebuilds. I have a 912uls on a Zodiac 601XLB that has started to be hard starting , in fact it will not start now unless I spray starting fluid into the air intake. Only did it once to convince myself it was a fuel issue. the engine started and would restart after an hour. However, if I leave the plane for a week or so it will not start. The engine acts like it is not getting fuel. I've pulled the carb bowls and all looks fine. Fuel in bowl and fuel is about 1/2 inch from top. Engine has 450 hours without a carb rebuild. Any other ideas what it could be? All input appreciated
Thanks
George
|
--
Zulu Delta
Mk IIIC
Thanks, Homer GBYM
It isn't necessary to have relatives in Kansas City in order to be unhappy.
- Groucho Marx
[quote][b]
| | - The Matronics RotaxEngines-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?RotaxEngines-List |
|
_________________
The smallest miracle right in front of you is enough to make you happy.... |
|
| Back to top |
|
|
Roger Lee
Joined: 10 Jan 2006
Posts: 1464
Location: Tucson, Az.
|
| Posted: Tue Aug 27, 2013 10:28 pm Post subject: Re: 912uls hard starting |
|
|
1/2" below the rim of the carb bowl is way too low. Double check the float arm height above the carb rim. It should be 10.5mm.
The carbs have to be off and upside down to check this. 450 hours is nothing, but how old are they?
| | - The Matronics RotaxEngines-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?RotaxEngines-List |
|
_________________
Roger Lee
Tucson, Az.
Rotax Instructor & Rotax IRC
Light Sport Repairman
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056 |
|
| Back to top |
|
|
gfmjr_20(at)hotmail.com
Guest
|
| Posted: Wed Aug 28, 2013 2:27 pm Post subject: 912uls hard starting |
|
|
Thanks for the info. I'll check at the hanger tomorrow
George
Date: Tue, 27 Aug 2013 23:45:42 -0500
Subject: Re: RotaxEngines-List: 912uls hard starting
From: aslsa.rng(at)gmail.com
To: rotaxengines-list(at)matronics.com
George, Do you have ignition modules p/n 966 726? These are a known problem and give symptoms you describe. If you do have these part number ignition modules, call Lockwood and ask to talk to Aaron.
Rick Girard
do not archive
On Tue, Aug 27, 2013 at 5:38 PM, george may <gfmjr_20(at)hotmail.com (gfmjr_20(at)hotmail.com)> wrote:
| Quote: | Sorry about the confusion in the title
From: gfmjr_20(at)hotmail.com (gfmjr_20(at)hotmail.com)
To: rotaxengines-list(at)matronics.com (rotaxengines-list(at)matronics.com)
Subject: RE: Running 582 Engines LOP
Date: Tue, 27 Aug 2013 17:19:08 -0400
Just wanted to check with the group before I begin my carb rebuilds. I have a 912uls on a Zodiac 601XLB that has started to be hard starting , in fact it will not start now unless I spray starting fluid into the air intake. Only did it once to convince myself it was a fuel issue. the engine started and would restart after an hour. However, if I leave the plane for a week or so it will not start. The engine acts like it is not getting fuel. I've pulled the carb bowls and all looks fine. Fuel in bowl and fuel is about 1/2 inch from top. Engine has 450 hours without a carb rebuild. Any other ideas what it could be? All input appreciated
Thanks
George
|
--
Zulu Delta
Mk IIIC
Thanks, Homer GBYM
It isn't necessary to have relatives in Kansas City in order to be unhappy.
- Groucho Marx
[quote]
===========
-List" target="_blank">http://www.matronics.com/Navigator?RotaxEngines-List
===========
http://forums.matronics.com
===========
="_blank">http://www.matronics.com/contribution
===========
[b]
| | - The Matronics RotaxEngines-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?RotaxEngines-List |
|
|
|
| Back to top |
|
|
Roger Lee
Joined: 10 Jan 2006
Posts: 1464
Location: Tucson, Az.
|
| Posted: Thu Aug 29, 2013 5:13 am Post subject: Re: 912uls hard starting |
|
|
Here is one last ignition module check. Place an ice bag on top and or around the ignition modules for 15-20 minutes and try a start. If it starts right up buy new modules. Yours are defective. Not kidding about the ice.
You can also just remove the modules and send them in for testing. There seems to be a numbers of case where failure is cropping up.
| | - The Matronics RotaxEngines-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?RotaxEngines-List |
|
_________________
Roger Lee
Tucson, Az.
Rotax Instructor & Rotax IRC
Light Sport Repairman
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056 |
|
| Back to top |
|
|
gfmjr_20(at)hotmail.com
Guest
|
| Posted: Sat Sep 07, 2013 2:24 pm Post subject: 912uls hard starting |
|
|
Richard and Roger--
Thanks for taking the effort to make suggestions on my hard starting issue. I did check the ignition modules and they were not the numbers that might have been an issue. And I loved the ice on the modules solution. Haven't had a need to try that yet but I'll keep it in my book of tips. I fully convinced myself it was not fuel related, and therefore it had to be electrical. Turns out that it was a low battery, even though the it seemed to be turning plenty fast enough to start the engine. I put a boost charge across the battery and it started fine. I'm using an Odessy 680 battery. It was measuring 12.7 volts when I had the trouble starting. This is a little below the 12.8 v 80% level of charge which I assumed would have been enough to start the engine. A fully charged battery was measured at 13.1 V. The battery is only 1 year old. I have since spoken to a couple of other experimental builders/pilots and they confirmed the they also had issues with this battery after about a year of service. I now am using a battery tender and the battery is always fully charged when I go to fly. No more starting issues.
George
601XLB--480hrs.
Date: Tue, 27 Aug 2013 23:45:42 -0500
Subject: Re: 912uls hard starting
From: aslsa.rng(at)gmail.com
To: rotaxengines-list(at)matronics.com
George, Do you have ignition modules p/n 966 726? These are a known problem and give symptoms you describe. If you do have these part number ignition modules, call Lockwood and ask to talk to Aaron.
Rick Girard
do not archive
On Tue, Aug 27, 2013 at 5:38 PM, george may <gfmjr_20(at)hotmail.com (gfmjr_20(at)hotmail.com)> wrote:
| Quote: | Sorry about the confusion in the title
From: gfmjr_20(at)hotmail.com (gfmjr_20(at)hotmail.com)
To: rotaxengines-list(at)matronics.com (rotaxengines-list(at)matronics.com)
Subject: RE: RotaxEngines-List: Running 582 Engines LOP
Date: Tue, 27 Aug 2013 17:19:08 -0400
Just wanted to check with the group before I begin my carb rebuilds. I have a 912uls on a Zodiac 601XLB that has started to be hard starting , in fact it will not start now unless I spray starting fluid into the air intake. Only did it once to convince myself it was a fuel issue. the engine started and would restart after an hour. However, if I leave the plane for a week or so it will not start. The engine acts like it is not getting fuel. I've pulled the carb bowls and all looks fine. Fuel in bowl and fuel is about 1/2 inch from top. Engine has 450 hours without a carb rebuild. Any other ideas what it could be? All input appreciated
Thanks
George
|
--
Zulu Delta
Mk IIIC
Thanks, Homer GBYM
It isn't necessary to have relatives in Kansas City in order to be unhappy.
- Groucho Marx
[quote]
-List" target=_blank>http://www.matronics.com/Navigator?RotaxEngines-List
ttp://forums.matronics.com
=_blank>http://www.matronics.com/contribution
[b]
| | - The Matronics RotaxEngines-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?RotaxEngines-List |
|
|
|
| Back to top |
|
|
Roger Lee
Joined: 10 Jan 2006
Posts: 1464
Location: Tucson, Az.
|
| Posted: Sun Sep 08, 2013 4:53 am Post subject: Re: 912uls hard starting |
|
|
Hi George,
12.7V should have been fine to start the engine, but I would double check my wire size and length. If the size is too small or the wire too long for its size it will have too much resistance. So when the battery dips a little and the voltage is down just a little it won't start unless the battery is completely full. If the wire is good then 12.5 should start that engine. I know this isn't really taught, but rotating the prop for the gurgle will help a marginal start up be easier.
| | - The Matronics RotaxEngines-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?RotaxEngines-List |
|
_________________
Roger Lee
Tucson, Az.
Rotax Instructor & Rotax IRC
Light Sport Repairman
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056 |
|
| Back to top |
|
|
rickofudall
Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA
|
| Posted: Sun Sep 08, 2013 6:19 am Post subject: 912uls hard starting |
|
|
Glad to hear it was a simple and cheap fix.
Rick
do not archive
On Sat, Sep 7, 2013 at 5:24 PM, george may <gfmjr_20(at)hotmail.com (gfmjr_20(at)hotmail.com)> wrote:
| Quote: | Richard and Roger--
Thanks for taking the effort to make suggestions on my hard starting issue. I did check the ignition modules and they were not the numbers that might have been an issue. And I loved the ice on the modules solution. Haven't had a need to try that yet but I'll keep it in my book of tips. I fully convinced myself it was not fuel related, and therefore it had to be electrical. Turns out that it was a low battery, even though the it seemed to be turning plenty fast enough to start the engine. I put a boost charge across the battery and it started fine. I'm using an Odessy 680 battery. It was measuring 12.7 volts when I had the trouble starting. This is a little below the 12.8 v 80% level of charge which I assumed would have been enough to start the engine. A fully charged battery was measured at 13.1 V. The battery is only 1 year old. I have since spoken to a couple of other experimental builders/pilots and they confirmed the they also had issues with this battery after about a year of service. I now am using a battery tender and the battery is always fully charged when I go to fly. No more starting issues.
George
601XLB--480hrs.
Date: Tue, 27 Aug 2013 23:45:42 -0500
Subject: Re: 912uls hard starting
From: aslsa.rng(at)gmail.com (aslsa.rng(at)gmail.com)
To: rotaxengines-list(at)matronics.com (rotaxengines-list(at)matronics.com)
George, Do you have ignition modules p/n 966 726? These are a known problem and give symptoms you describe. If you do have these part number ignition modules, call Lockwood and ask to talk to Aaron.
Rick Girard
do not archive
On Tue, Aug 27, 2013 at 5:38 PM, george may <gfmjr_20(at)hotmail.com (gfmjr_20(at)hotmail.com)> wrote:
| Quote: | Sorry about the confusion in the title
From: gfmjr_20(at)hotmail.com (gfmjr_20(at)hotmail.com)
To: rotaxengines-list(at)matronics.com (rotaxengines-list(at)matronics.com)
Subject: RE: RotaxEngines-List: Running 582 Engines LOP
Date: Tue, 27 Aug 2013 17:19:08 -0400
Just wanted to check with the group before I begin my carb rebuilds. I have a 912uls on a Zodiac 601XLB that has started to be hard starting , in fact it will not start now unless I spray starting fluid into the air intake. Only did it once to convince myself it was a fuel issue. the engine started and would restart after an hour. However, if I leave the plane for a week or so it will not start. The engine acts like it is not getting fuel. I've pulled the carb bowls and all looks fine. Fuel in bowl and fuel is about 1/2 inch from top. Engine has 450 hours without a carb rebuild. Any other ideas what it could be? All input appreciated
Thanks
George
|
--
Zulu Delta
Mk IIIC
Thanks, Homer GBYM
It isn't necessary to have relatives in Kansas City in order to be unhappy.
- Groucho Marx
|
--
Zulu Delta
Mk IIIC
Thanks, Homer GBYM
It isn't necessary to have relatives in Kansas City in order to be unhappy.
- Groucho Marx
[quote][b]
| | - The Matronics RotaxEngines-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?RotaxEngines-List |
|
_________________
The smallest miracle right in front of you is enough to make you happy.... |
|
| 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
