Today's Message Index:
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1. 05:46 AM - Re: RotaxEngines-List Digest: 3 Msgs - 07/09/13 (Roger Lee)
2. 05:53 AM - Re: 912uls hard starting (Roger Lee)
3. 07:19 AM - Re: 912uls hard starting (Richard Girard)
Message 1
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| Subject: | Re: RotaxEngines-List Digest: 3 Msgs - 07/09/13 |
Hi Henry,
Glad the problem is solved. As far as the rich part, do not base any rich conclusions
on black dry soot on the plugs when it has been run at idle. You need to
run the engine over 4000 for 5-10 minutes and then shut it down. It is normal
to have dry sooty plugs from idle, but that goes away at the higher rpms. Not
everyone has it or does it happen to the same plugs all the time. I would fly
it a time or two before making any solid conclusions.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center - Heavy Maint. Rated
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=408226#408226
Message 2
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| 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.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center - Heavy Maint. Rated
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=408227#408227
Message 3
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| Subject: | Re: 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@hotmail.com> wrote:
> 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: RotaxEngines-List: 912uls hard starting
> From: aslsa.rng@gmail.com
> To: rotaxengines-list@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@hotmail.com> wrote:
>
> Sorry about the confusion in the title
>
> ------------------------------
> From: gfmjr_20@hotmail.com
> To: rotaxengines-list@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
>
> *
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> --
> Zulu Delta
> Mk IIIC
> Thanks, Homer GBYM
>
> It isn't necessary to have relatives in Kansas City in order to be unhappy.
> - Groucho Marx
>
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--
Zulu Delta
Mk IIIC
Thanks, Homer GBYM
It isn't necessary to have relatives in Kansas City in order to be unhappy.
- Groucho Marx
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