Today's Message Index:
----------------------
1. 03:08 AM - Re: 914 rough running (Robert Borger)
2. 03:58 AM - Re: 914 rough running (h&jeuropa)
3. 06:31 AM - Re: 914 rough running (Kevin Klinefelter)
4. 06:57 AM - Re: 914 rough running (Jerry Rehn)
5. 06:59 AM - Re: Re: 914 rough running (Jerry Rehn)
6. 10:12 AM - Re: 914 rough running (Jerry Rehn)
7. 11:04 AM - Re: Re: 914 rough running (Fred Klein)
8. 02:42 PM - Re: 914 rough running (Bud Yerly)
Message 1
INDEX | Back to Main INDEX |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: 914 rough running |
Jerry,
No to both questions. I hope to be at the airport later this morning.
I'll see if Nathan is working today or when he is working so I can ask
him.
Blue skies & tailwinds,
Bob Borger
Europa XS Tri, Rotax 914, Airmaster C/S Prop.
Little Toot Sport Biplane, Lycoming Thunderbolt AEIO-320 EXP
3705 Lynchburg Dr.
Corinth, TX 76208-5331
Cel: 817-992-1117
rlborger@mac.com
On May 5, 2013, at 10:36 PM, Jerry Rehn <rehn@rockisland.com> wrote:
Bob
Any idea what torque setting he used? And how he reshaped the bowls?
Sent from my iPad
Message 2
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: 914 rough running |
Jerry,
We also have a 914 with about 425 hours on it. SN is 4418263. When we had the
carbs rebuilt in November by LEAF, the bowl attachment screw 963-281 was replaced.
The explanation was that O ring needs a different attachment bolt and
the o ring has superseded the flat gasket as the current revision of the carb.
And yes, the O rings were not part of the overhaul kit - they were another $6.31
each.
The attachment bolt is a pricy little item, $72.50 each!!
Hope this helps. Talk to Brett at LEAF 800-532-3462 for more info.
Jim & Heather
N241BW
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=400034#400034
Message 3
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: 914 rough running |
I know that if you over-tourqe this that the little brass rods that the floa
ts ride up and down on will splay outward as the bottom of the bowl is defor
med. You should be able to see if that's the problem.
Kevin
On May 6, 2013, at 3:07 AM, Robert Borger <rlborger@mac.com> wrote:
> Jerry,
>
> No to both questions. I hope to be at the airport later this morning. I'
ll see if Nathan is working today or when he is working so I can ask him.
>
> Blue skies & tailwinds,
> Bob Borger
> Europa XS Tri, Rotax 914, Airmaster C/S Prop.
> Little Toot Sport Biplane, Lycoming Thunderbolt AEIO-320 EXP
> 3705 Lynchburg Dr.
> Corinth, TX 76208-5331
> Cel: 817-992-1117
> rlborger@mac.com
>
> On May 5, 2013, at 10:36 PM, Jerry Rehn <rehn@rockisland.com> wrote:
>
> Bob
> Any idea what torque setting he used? And how he reshaped the bowls?
>
> Sent from my iPad
>
>
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3
D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3
D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3
D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3
D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>
Message 4
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: 914 rough running |
Bob &Kevin, thanks for info, I am back out to take off and exam bowl, makes a
lot of sense, for issues I'm having.
Sent from my iPad
On May 6, 2013, at 6:30 AM, Kevin Klinefelter <klinefelter.kevin@gmail.com> w
rote:
> I know that if you over-tourqe this that the little brass rods that the fl
oats ride up and down on will splay outward as the bottom of the bowl is def
ormed. You should be able to see if that's the problem.
> Kevin
>
> On May 6, 2013, at 3:07 AM, Robert Borger <rlborger@mac.com> wrote:
>
>> Jerry,
>>
>> No to both questions. I hope to be at the airport later this morning. I
'll see if Nathan is working today or when he is working so I can ask him.
>>
>> Blue skies & tailwinds,
>> Bob Borger
>> Europa XS Tri, Rotax 914, Airmaster C/S Prop.
>> Little Toot Sport Biplane, Lycoming Thunderbolt AEIO-320 EXP
>> 3705 Lynchburg Dr.
>> Corinth, TX 76208-5331
>> Cel: 817-992-1117
>> rlborger@mac.com
>>
>> On May 5, 2013, at 10:36 PM, Jerry Rehn <rehn@rockisland.com> wrote:
>>
>> Bob
>> Any idea what torque setting he used? And how he reshaped the bowls?
>>
>> Sent from my iPad
>>
>>
>>
>
>
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3
D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3
D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3
D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3
D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>
Message 5
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: 914 rough running |
Thanks Jim.
Sent from my iPad
On May 6, 2013, at 3:58 AM, "h&jeuropa" <butcher43@att.net> wrote:
>
> Jerry,
>
> We also have a 914 with about 425 hours on it. SN is 4418263. When we had the
carbs rebuilt in November by LEAF, the bowl attachment screw 963-281 was replaced.
The explanation was that O ring needs a different attachment bolt and
the o ring has superseded the flat gasket as the current revision of the carb.
And yes, the O rings were not part of the overhaul kit - they were another
$6.31 each.
>
> The attachment bolt is a pricy little item, $72.50 each!!
>
> Hope this helps. Talk to Brett at LEAF 800-532-3462 for more info.
>
> Jim & Heather
> N241BW
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=400034#400034
>
>
>
>
>
>
>
>
>
>
Message 6
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: 914 rough running |
Message 7
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: 914 rough running |
On May 6, 2013, at 6:59 AM, Jerry Rehn wrote:
>> The attachment bolt is a pricy little item, $72.50 each!!
Jim...tell me that you've misplaced a decimal point...
Fred
do not archive
Message 8
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: 914 rough running |
Jerry,
Please note that the 914 is a bugger to troubleshoot, and all the advice
so far is notable and spot on.
Since the engine has two problems: (1) Rough after pulling it back and
(2) TCU Caution light, I will deal with 2 first...
2. The caution light is most probably your throttle pot is not hooked
up electrically or the pot was not set to idle with the throttle plate
closed so check your connections and pot rotation after doing the carb.
Easy mistake, especially since the book doesn't cover it. If not set
properly, the TCU gets the wrong throttle position for the Turbo boost
and pressure sensors.
1. With you having the same hours I have on my engine, I have noticed
that with all the tubing and carb float bowl items operating properly
and no fuel leaks, the engine on power reduction runs very rough but
idles well and runs well above 4000 RPM. I suspect yours is similar.
It is not uncommon that one of the carb pistons is hanging up. Once the
piston goes up on full throttle, one doesn't want to come down. I
removed the carburetors again. I completely drained and freed both my
carbs of fuel to prevent an explosion. I rigged my vacuum cleaner and
pulled air from the manifold side and noted the movement of the piston.
On the left carb it was clearly hanging up. After much cleaning,
sanding with 1000 and 1500 grit paper, polishing and more cleaning, the
piston is acceptable in its movement and smoothness. If your carb
pistons move smoothly and in unison (checked by noting the throttle
angle vs piston position) then that should make the carbs balance in the
mid range. If the main carb body is worn or scored badly, some small
grit has gotten into the carb and I am afraid you can save a lot of time
and trouble by buying two new carbs. By the way, that is about the
price of a small car down payment.
To Bob Borgers comment, I have found that leaving the float bowl gasket
in place and adding the new extra O ring (with a bit of lube) allows me
to install the original float bowl attachment screw and I torque it to
48 inch pounds. Be sure to soak your paper gasket in fuel for a few
minutes. Note that the old manual said 5.5 nm or 45 foot pounds.
Obviously 45 foot pounds is going to seriously bend the bottom of the
carb bowl and the pins. Luckily, a quick $100 per float bowl will fix
that. I have found that it necessary to pay attention to the
translation and conversions in the old manual. The new manual has the
torque hidden in the verbage so well that I had to post it to my board
in the shop. Please pay close attention to your brass float pins and
the float bowl. Also make sure your float needle valve and arms are
undamaged.
I have been very disappointed in the fit of the new carb parts such as
the needle fixation screw with the O ring. It sucks.
I hope your carbs just need a little tender love and care and not
replacement. I am at my last straw with my 1/3 side carb, so I may be
spending some big bucks.
Regards,
Bud Yerly
----- Original Message -----
From: Jerry Rehn<mailto:rehn@rockisland.com>
To: europa-list@matronics.com<mailto:europa-list@matronics.com>
Sent: Sunday, May 05, 2013 3:43 PM
Subject: Europa-List: 914 rough running
A little history. Engine has about 450 hours, always ran quite well,
replaced upper ignition module about two years ago.
On recent full boost takeoff, got to about 900 feet leveled off,
pulled throttle back and engine ran severe rough, pulled back to idle
and engine ran ok, didn't stop! Landed. Checked fuel filter, ok, looked
for anything around carbs, nothing. Tried several full run ups, ok.
Tried second take off everything fine, pulled back and again engine ran
severe rough, pulled back to idle, ran rough, landed. Parked plane, got
tools, next day removed carbs looked for issues. Found one of the four
screws that holds down the rubber diaphragm loose, very strange because
I have never removed this before. Anyway figured this was my problem.
Fixed took off all ok. Got home. Next day tried full boost, same issue
again, didn't take off. Got carburetor repair kit and went through both
carbs. Reinstalled carbs double checked. Started right up, as I move the
throttle past 2300 rpm the yellow caution light starts blinking, engine
runs rough, reduce rpm the light goes off, increase the light comes back
on. Seems the engine runs off the idle jet ok but not on the main jet.
I have also checked the waste gate for proper function, fuel pressure
ok, turbo lights come on and go off as they should when master is tuned
on, I have looked at the vent lines. The yellow blinking light can
indicate a sensor failure, seems like it would continue blinking if
there was a failure. Seems odd that it stops at low rpm. Seems I have
some kind of a vacuum or pressure issue, but am running out of ideas. I
am about to go and recheck again! Could a faulty sensor cause this?
Hope someone out there has some wise thoughts on this frustrating
problem. Worse yet, we have beautiful spring flying weather!
Thanks for help.
Jerry
914 Mono XS
http://www.matronics.com/Navigator?Europa-List<http://www.matronics.com/N
avigator?Europa-List>
http://www.matronics.com/contribution<http://www.matronics.com/contributi
on>
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|