 |
Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
|
| View previous topic :: View next topic |
| Author |
Message |
GeoR38
Joined: 25 Jan 2006
Posts: 60
Location: The Villages, fl
|
 Posted: Mon Mar 19, 2007 6:29 pm Post subject: Full throttle power loss |
 |
|
make sure the air vent on the fuel tank is not covered........I had that happen and it would kill the engine when a vacuum bulilt up in the tank. Also I had an eyelash (mine, I think, just from lookin at the inside of my micuni fuel pump) laying on the rubber membrane of that fuel pump. Trust me ... down I came everytime at high speed throttle. ..... years ago . Btw, I am still using the same fuel pump and it has never since failed since removing my eyelash!.... in 1994.
George Randolph
Firestar driver from the Villages
447 n Ivo 3 blade, single carb just like yours
AOL now offers free email to everyone. Find out more about what's free from AOL at AOL.com.
[quote][b]
| | - 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 |
|
_________________
George Randolph
Firestar driver, The Villages, fl |
|
| Back to top |
|
 |
grabo172
Joined: 10 Oct 2006
Posts: 32
Location: Beaver, OH
|
| Posted: Mon Mar 19, 2007 7:18 pm Post subject: Re: Full throttle power loss |
|
|
Well, I've ordered a new fuel pump and fuel filter... as well as some material to redo my tailwheel springs and wires I've been wanting to replace. I figure might as well be safe and do it all while I'm in there, and I'm due in 2 hours for my 50 hour maint anyway, so I'll knock it all out at once...
I only wish I could get it back to my home airport to do everything... but at least the other airport (Holly Hill) is where my club meets and I know it has a good area for testing and I have some support there..
I've got it in a spare hanger, but it is a hangar that has an open front, which I don't really like, I'm going to have alot of pollen to clean off of it, but beggers can't be choosers I guess.
Thanks for all the great advice guys!
-Erik
| | - 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 |
|
_________________
-Erik Grabowski
N?????
CFI/CFII/LS-I |
|
| Back to top |
|
|
kolbmark3
Joined: 10 Jan 2006
Posts: 40
Location: Mt Clemens, MI
|
| Posted: Tue Mar 20, 2007 2:50 am Post subject: Full throttle power loss |
|
|
Erik,
You have now received a lot of good information. After this happened to me I
was never able to pinpoint exactly what caused it. So I did everything that
people suggested: replaced the fuel pump, gas filters, fuel lines, pulse
line, removed the squeeze bulb, cleaned the carbs, took out the gas tanks
and cleaned them. In short, everything to do with the gas supply.
Engine worked fine after that but never did know which one of the above
cured it.
Jim
Mark III
---
| | - 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 |
|
_________________
Jim
Mark III
Mt. Clemens, MI |
|
| Back to top |
|
|
ulflyer(at)verizon.net
Guest
|
| Posted: Tue Mar 20, 2007 7:53 am Post subject: Full throttle power loss |
|
|
Jim,
Did you have a by-pass around the primer bulb at the time. Had a
friend who had an engine out - luckily it happened again on the
ground - we were able to see fuel flow had been affected on the
output side of the bulb.
If I use one I always run a bypass around it.
jerb
At 06:51 AM 3/20/2007, you wrote:
[quote]
Erik,
You have now received a lot of good information. After this happened to me I
was never able to pinpoint exactly what caused it. So I did everything that
people suggested: replaced the fuel pump, gas filters, fuel lines, pulse
line, removed the squeeze bulb, cleaned the carbs, took out the gas tanks
and cleaned them. In short, everything to do with the gas supply.
Engine worked fine after that but never did know which one of the above
cured it.
Jim
Mark III
---
| | - 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 |
|
|
Thom Riddle
Joined: 10 Jan 2006
Posts: 1597
Location: Buffalo, NY, USA (9G0)
|
| Posted: Tue Mar 20, 2007 9:07 am Post subject: Re: Full throttle power loss |
|
|
Erik,
If you have not already done so, order the Bing manual from
http://www.bingcarburetor.com/manual.html
It is $10 including postage and covers both 54 and 64 carbs. It is the best $10 anyone runining a Bing Carb can invest. It expalins everything you need to know about their carbs. Their parts are high priced so if you need any, you can buy them cheaper (usually) from Lockwood.
Thom in Buffalo
| | - 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 |
|
|
Steve Boetto
Joined: 11 Jan 2006
Posts: 364
|
| Posted: Tue Mar 20, 2007 10:42 am Post subject: Full throttle power loss |
|
|
thanx Thom,
ordered one today
steve b
do not archive
AOL now offers free email to everyone. Find out more about what's free from AOL at AOL.com.
[quote][b]
| | - 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 |
|
|
grabo172
Joined: 10 Oct 2006
Posts: 32
Location: Beaver, OH
|
| Posted: Tue Mar 20, 2007 4:45 pm Post subject: Re: Full throttle power loss |
|
|
I found the #1 culprit today...
I took out the fuel tank and found a bunch of trash in it...
including a 1/2" x 1/2" leaf fragmant...
I'm pretty sure it was crapping up the suction.
My fuel probe grommet was also ripped and torn... I think That might
have been the other trash in there.
So after figuring out how to get the tank out, I cleaned and flushed
and reinstalled it.
Tomorrow my new fuel filter, plug, and fuel pump arrive so I'll swap
all them out and put some fresh gas in it. Then hopefully a good test
run on the ground...
I'm also going to finish up my 50 hour inspection and re rig the tailwheel cable with compression sprins... (I've been meaning to do the tailwheel for some time now)
-Erik
| | - 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 |
|
_________________
-Erik Grabowski
N?????
CFI/CFII/LS-I |
|
| Back to top |
|
|
ulflyer(at)verizon.net
Guest
|
| Posted: Tue Mar 20, 2007 5:54 pm Post subject: Full throttle power loss |
|
|
Erik,
You say you worked on the carb - by chance when it came to the step
of reassembling the throttle cable, needle with clip and retainer
cup, may you have gotten the orientation incorrect during the
reassembly - dealing with that spring it's easy to assemble it wrong,
been there done that - it will run but doesn't run properly. This
would be the first thing I would check for. Its been a while since I
looked at one of these so I am not going to tell you the order they
go in. Perhaps one of the others guys can help out here.
Looked at you photo - looks like you have your carb titled forward -
that would make it even worst when the tail is in flying position -
correct that, make it level with the engine (tail) in normal flying attitude.
Looks like you have the little loop of tubing which connects between
the two small barb fittings located on each side of the carb, is
there a hole in the center of it for venting.?
Take the air filter off, looking into the air inlet opening check the
position of the slide with the throttle in the fully closed and fully
open positions - with the throttle in the closed position is the
slide lowering until it hits the stop (screw adjustment) - when the
throttle is in the full open position is the slide raising enough to
fully clear the intake diameter. Don't forget to return the throttle
back to the fully closed position immediately afterwards.
How's the air filter - is it clean - lightly oiled (not wet with oil
or water). If you clean it don't use gasoline - go to an auto parts
and get some K&N spray on filter cleaner and oil - also DO NOT spray
the filer out with an air hose.
Looking closely at your photo, there is a stain on you throttle cable
where it enters the top of the carb - has it changed position at all,
it looks as if has at some time. That may be from adjusting the
cable over time. Make sure the carb slide is fully opening and
fully closing as explained in the above step.
What type of tubing are you using between your fuel pump and the
engine vent/pulse port - it must be the thick wall type tubing like
Lockwood or CPS sells for this purpose, you can't use regular wall
thickness fuel line - it gives and softens the pulse - . Can't use
black fuel line either. This will show up as you increase you fuel
burn rate at higher RPM, the thinner wall tubing will soften the
pulses to the fuel pump and it will not be able to keep up with fuel demand.
Any bubbles forming in your fuel line?
Do you have a fuel filter - if so how old is it and what type is
it? Describe it, paper element, etc.
How old is the fuel pump?
How old is the fuel and did you put oil in it at all or twice maybe?
This will give you a few things to think about while waiting for more
suggestions.
jerb
At 04:27 PM 3/19/2007, you wrote:
| Quote: |
So my Rotax 447 Bing 54 carb Firestar has been at another airport
for 2 days now... the reason...
When I apply full power and take off about 30 seconds into the climb
I loose engine power. I can run at partial throttle and get back
and land, but the full throttle will kill it.
I have a couple theories...
One is a bad/wrong size main jet...
but I took it apart and verified it was clean and the right size
(it's a 165) and today it was an internationally standard day temp
wise (65F) at sea level.
My other thought is maybe the carb is not vertical and tilted too
far back during the climb and therefore the bowl level is tilted and
uncovering the jet?
I'll attach a picture of the carb...
Any other thoughts on what it may be...
Ground run is good, I adjusted the clip to #2 from top and re tuned
the carb on the ground.
-Erik
--------
-Erik Grabowski
Kolb Firestar N197BG
CFI/CFII/LS-I
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=101705#101705
Attachments:
http://forums.matronics.com//files/photo_002_153.jpg
|
| | - 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 |
|
|
grabo172
Joined: 10 Oct 2006
Posts: 32
Location: Beaver, OH
|
| Posted: Wed Mar 21, 2007 4:17 pm Post subject: Re: Full throttle power loss |
|
|
Problem solved!! 
It was the trash in the tank.
I did also level the carb and adjust the carb, but that was for fine tuning.
I Put some nice clean fresh gas in her and started her up, after a few carb adjustments and some warm up, I was into testing mode...
Tested various power settings up to full power and let her run at full throttle tied down for a good 3 minutes, and she ran perfectly...
So I hopped in and and went up... very ready for the engine to cough and it never did! Climbed to 2000' perfectly. I did some more testing and various power settings and the engine has never run so good...
Thanks for all the help everyone! You are the best resource one could ask for! 
| | - 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 |
|
_________________
-Erik Grabowski
N?????
CFI/CFII/LS-I |
|
| 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
