 |
Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
|
| View previous topic :: View next topic |
| Author |
Message |
Jim Baker
Joined: 30 Mar 2006
Posts: 181
Location: Sayre, PA
|
 Posted: Sat Oct 25, 2008 8:15 pm Post subject: I'm so disappointed...... |
 |
|
X-SpamReason %%SpamReason%%:
| Quote: | How was the EGT, CHT, plugs?
|
EGTs and CHTs were a bit low, plugs nice and tan.
>Jets could need to be changed even if it ran
| Quote: | good before if the weather's different.
|
Weather essentially the same. This engine has a history of over
fifteen years of very consistent operation. Forgot to mention that
it's only got about 300 hrs total. Overhauled last year and ran fine
afterwards. Not a carbon problem. Ring end gaps all within spec as
was the cylinder choke. Outer seals replaced, inner seals tested fine
on vacuum test. All applicable gaskets new.
| Quote: | Also could be crankshaft seals,
|
See above.
| Quote: | cylinder base gaskets,
|
See above.
| Quote: | fuel blockage upstream somewhere
|
Ran a fuel line from the pump inlet directly into the gas tank by-
passing all other lines...no change.
| Quote: | or bad gas if
that's what was sitting in the tank for a year.
|
Remember the fuel lines were all new and the tank was fine, new fuel
and oil.
This will just kill you when I tell you the outcome......
Jim Baker
580.788.2779
Elmore City, OK
| | - The Matronics Kolb-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?Kolb-List |
|
|
|
| Back to top |
|
 |
Jim Baker
Joined: 30 Mar 2006
Posts: 181
Location: Sayre, PA
|
| Posted: Sat Oct 25, 2008 8:17 pm Post subject: I'm so disappointed...... |
|
|
X-SpamReason %%SpamReason%%:
| Quote: | If the holes in the bottom of these lines get clogged - the engine
will never run right.
|
If you're thinking of the vent line, new hose and open vent hole. But
that's not it either.....
Jim Baker
580.788.2779
Elmore City, OK
| | - The Matronics Kolb-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?Kolb-List |
|
|
|
| Back to top |
|
|
Blumax008(at)aol.com
Guest
|
| Posted: Sun Oct 26, 2008 12:06 am Post subject: I'm so disappointed...... |
|
|
I give up. Let's blame it on Obama or Bush. That's what everybody else does
| | - The Matronics Kolb-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?Kolb-List |
|
|
|
| Back to top |
|
|
ez(at)embarqmail.com
Guest
|
| Posted: Sun Oct 26, 2008 10:50 am Post subject: I'm so disappointed...... |
|
|
Black snake in muffler. <g>
On Oct 25, 2008, at 10:15 PM, Jim Baker wrote:
| Quote: |
X-SpamReason %%SpamReason%%:
> Please keep it Kolb-related.
This is going to be a test. I'll present the scenario and we'll see
who comes up with the solution that eventually solved a rather
perplexing problem on a friend's Kolb. Some of the data below may be
indirection so be careful.
Kolb FS I , Rotax 377, points ign. Engine ran fine the year prior
which is the last time it was flown. Otherwise, engine started and
run once or twice a month but only up to temperature and only up to
1/3 throttle to keep it lubricated. Fuel system required all hoses to
be changed including primer line. Simplified system by taking out the
primer bulb but left the primer pump. Fuel pump rebuilt, neoprene
connector between carb and intake manifold replaced.
When started and run up the engine failed to make full power hitting
about 5800 rpm full throttle static and showing signs of being too
lean since choke improved the situation but didn't make full power
even then. Suspected the filter, replaced, same result. Re checked
pulse pump, operating normally and providing sufficient fuel as
indicated by the choke application. Float bowl clean, no debris. Jets
were the same as before (remember, operated fine before) so no
change. Jet needle change made no difference.Carb disassembled, all
orifices blown out, floats checked good, float level checked good.
Timing cheacked good as did plug gap and points and condenser. Still
the same low power production aided with choke.
Let's see if anyone can figure out what the problem really was. It
was a funky solution but worth passing on.......
Jim Baker
580.788.2779
Elmore City, OK
|
| | - The Matronics Kolb-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?Kolb-List |
|
|
|
| Back to top |
|
|
Jim Baker
Joined: 30 Mar 2006
Posts: 181
Location: Sayre, PA
|
| Posted: Sun Oct 26, 2008 11:04 am Post subject: I'm so disappointed...... |
|
|
X-SpamReason %%SpamReason%%:
| Quote: |
Black snake in muffler. <g>
|
I wish it had been...simple to see, easy to remedy.
Jim Baker
580.788.2779
Elmore City, OK
| | - The Matronics Kolb-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?Kolb-List |
|
|
|
| Back to top |
|
|
Jim Baker
Joined: 30 Mar 2006
Posts: 181
Location: Sayre, PA
|
| Posted: Sun Oct 26, 2008 11:18 am Post subject: I'm so disappointed...... |
|
|
X-SpamReason %%SpamReason%%:
| Quote: | > This is going to be a test.
|
| Quote: | > Let's see if anyone can figure out what the problem really was. It
> was a funky solution but worth passing on.......
|
The operative word here is "funky". What else could it be but the
fuel system? Somehow it had changed in some small way. So.....
Took the carb apart again. All components were correctly oriented
(needle jet emulsion tube, needle capture plastic cup in the slide on
top of needle, etc.)...there was just nothing wrong and all passages
had been blown out with 100 psi compressed air. What could withstand
that?
Here's what it was. If you've ever taken the bowl off and let it dry
and have seen some white, powdery stuff sticking to the bowl sides
you'll want to check the main jet as well. This stuff had built up
over time inside the jet orifice and had slowly reduced the effective
opening of the jet to something less than the optimum. I had even
used a jewelers loupe to look through the jet to ensure that it
wasn't damaged by ham handed cleaning. The bore was smooth and shiny.
But, it finally dawned on me that it didn't look particularly
metallic, either. Clipped the end of a Ty-Wrap so that it would fit
snugly into the jet and twisted. Gad, what a little pile of crap
emerged on the end of that plastic piece! It had withstood 100 psi
and solvent. Geez....
Jim Baker
580.788.2779
Elmore City, OK
| | - The Matronics Kolb-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?Kolb-List |
|
|
|
| Back to top |
|
|
bikefair
Joined: 25 Dec 2007
Posts: 6
|
| Posted: Sun Oct 26, 2008 6:36 pm Post subject: Re: I'm so disappointed...... |
|
|
haha, mouse nest in muffler?
| | - The Matronics Kolb-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?Kolb-List |
|
|
|
| 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
