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Glasair III Engine/Fuel Problem

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darnpilot(at)aol.com
Guest

Posted: Tue Oct 23, 2007 7:36 pm Post subject: Glasair III Engine/Fuel Problem

 	  Quote: 	
		  

Hello:







I cannot get the Glasair forum to work, so please indulge me if you will.

 



 



I've recently purchased a Glasair III.  I have been having continued problems with a very rough running engine.  

It will run fine for 15 minutes then start running rough and losing power.  

It has even quit running completely.  

The fuel system has been cleaned (injectors, fuel distributor, gascolator and filter, and screen filters).  It still has the same problem.  

It will run fine for awhile, then very rough or not at all (on the ground and in the air).  

There is no obvious problem that we can find as everything previously mentioned has been double checked again.  

Problem occurs with or without the boost pump on.  The last time the engine would run at 17" MP but no more.



 



The latest "guess" is the fuel servo.  The only thing that has not been checked (other than the fuel servo) is the fuel selector valve.  

So far alot of effort (and $$$) have been spent with no solution.  

I hate to spend big $$$ on a now or rebuilt fuel servo and again find the same problem afterward.  Ideas?  HELP!  



 



My airplane is stuck at a small airfield in the middle of nowhere...please help.



 



BTW, I took the airplane to High Speed Composites in Ft. Pierce, FL to have this fixed as well as some gear work done.  I will never take my plane back there.



 



Jeff 

	


   Email and AIM finally together. You've gotta check out free AOL Mail! 

  [quote][b]

dlm46007(at)cox.net
Guest

Posted: Tue Oct 23, 2007 7:49 pm Post subject: Glasair III Engine/Fuel Problem

I suggest you contact the field rep for the Seattle area  assuming your engine is a Lycoming. He is Brian Costello at BCostello(at)Lycoming.testron.com (BCostello(at)Lycoming.testron.com).

  



   From: owner-rv10-list-server(at)matronics.com  [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of  darnpilot(at)aol.com

Sent: Tuesday, October 23, 2007 8:34  PM

To: rv10-list(at)matronics.com

Subject: Glasair  III Engine/Fuel Problem

 

  	  Quote: 	
		  

Hello:







I cannot get the Glasair forum to work, so please indulge me if you will.

 



 



I've recently purchased a Glasair III.  I have been having continued problems with a very rough running engine.  

It will run fine for 15 minutes then start running rough and losing power.  

It has even quit running completely.  

The fuel system has been cleaned (injectors, fuel distributor, gascolator and filter, and screen filters).  It still has the same problem.  

It will run fine for awhile, then very rough or not at all (on the ground and in the air).  

There is no obvious problem that we can find as everything previously mentioned has been double checked again.  

Problem occurs with or without the boost pump on.  The last time the engine would run at 17" MP but no more.



 



The latest "guess" is the fuel servo.  The only thing that has not been checked (other than the fuel servo) is the fuel selector valve.  

So far alot of effort (and $$$) have been spent with no solution.  

I hate to spend big $$$ on a now or rebuilt fuel servo and again find the same problem afterward.  Ideas?  HELP!  



 



My airplane is stuck at a small airfield in the middle of nowhere...please help.



 



BTW, I took the airplane to High Speed Composites in Ft. Pierce, FL to have this fixed as well as some gear work done.  I will never take my plane back there.



 



Jeff 

	


   Email and AIM finally together. You've gotta check out free AOL Mail!



[quote]



href="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List

href="http://forums.matronics.com">http://forums.matronics.com



[b]

darnpilot(at)aol.com
Guest

Posted: Tue Oct 23, 2007 8:08 pm Post subject: Glasair III Engine/Fuel Problem

David:

    

   The email address bounced.  Do you have another?

    

   Thank you.

    

   Jeff

 

 

 --

millstees(at)ameritech.ne
Guest

Posted: Tue Oct 23, 2007 8:11 pm Post subject: Glasair III Engine/Fuel Problem

I think the email address should include textron not  testron



   From: owner-rv10-list-server(at)matronics.com  [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of  darnpilot(at)aol.com

Sent: Tuesday, October 23, 2007 11:07  PM

To: rv10-list(at)matronics.com

Subject: Re: RV10-List:  Glasair III Engine/Fuel Problem

 

 David:

  

 The email address bounced.  Do you have another?

  

 Thank you.

  

 Jeff

--

Dave(at)AirCraftersLLC.co
Guest

Posted: Tue Oct 23, 2007 9:17 pm Post subject: Glasair III Engine/Fuel Problem

Jeff,

  

 Assuming a Lycoming  IO-540 with Bendix fuel injection:

  

 Make sure you have around  25 PSI fuel pressure between the engine fuel pump and the servo.  The  pressure should be about the same with the boost pump on or off, or the engine  off with boost pump on.  If you don't have that, fix it first.

  

 Next if you disconnect  the fuel hose at the servo and run it into a bucket, you should be  getting well over 40 gallons per hour of fuel flow.  You can measure  on the fuel flow gauge or with a stopwatch and a gas can.  Be careful, it's  a lot of fuel and it burns very well.

  

 If the fuel flow is low,  you may have a blocked hose, filter, inlet, or fuel valve.  Check the  finger screens in the fuel tanks.  Same on all tanks?

  

 If you have fuel pressure  and fuel flow before the servo, the problem is most likely the servo,  but also check for a blocked (dirty) air filter, dirty servo  filter (inside the servo).

  

 There are lots of other  possibilities.  If you want to give me a call tomorrow I'll try to help  out.

  

 Good Luck,

  

  Dave Saylor

 AirCrafters LLC

 140 Aviation Way

 Watsonville, CA 

 831-722-9141

 831-750-0284 CL

 www.AirCraftersLLC.com



  

  



   From: owner-rv10-list-server(at)matronics.com  [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of  darnpilot(at)aol.com

Sent: Tuesday, October 23, 2007 8:34  PM

To: rv10-list(at)matronics.com

Subject: Glasair  III Engine/Fuel Problem

 

  	  Quote: 	
		  

Hello:







I cannot get the Glasair forum to work, so please indulge me if you will.

 



 



I've recently purchased a Glasair III.  I have been having continued problems with a very rough running engine.  

It will run fine for 15 minutes then start running rough and losing power.  

It has even quit running completely.  

The fuel system has been cleaned (injectors, fuel distributor, gascolator and filter, and screen filters).  It still has the same problem.  

It will run fine for awhile, then very rough or not at all (on the ground and in the air).  

There is no obvious problem that we can find as everything previously mentioned has been double checked again.  

Problem occurs with or without the boost pump on.  The last time the engine would run at 17" MP but no more.



 



The latest "guess" is the fuel servo.  The only thing that has not been checked (other than the fuel servo) is the fuel selector valve.  

So far alot of effort (and $$$) have been spent with no solution.  

I hate to spend big $$$ on a now or rebuilt fuel servo and again find the same problem afterward.  Ideas?  HELP!  



 



My airplane is stuck at a small airfield in the middle of nowhere...please help.



 



BTW, I took the airplane to High Speed Composites in Ft. Pierce, FL to have this fixed as well as some gear work done.  I will never take my plane back there.



 



Jeff 

	


   Email and AIM finally together. You've gotta check out free AOL Mail!



[quote]



href="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List

href="http://forums.matronics.com">http://forums.matronics.com



[b]

flysrv10(at)gmail.com
Guest

Posted: Wed Oct 24, 2007 2:55 am Post subject: Glasair III Engine/Fuel Problem

Is your plane still in the Fort Pierce area?  If it is still there I will be glad to help you with tools, my time and a second opinion.

Rob Kermanj.

  On Oct 23, 2007, at 11:34 PM, darnpilot(at)aol.com (darnpilot(at)aol.com) wrote:

 	  Quote: 	
		   	  Quote: 	
		  Hello:







I cannot get the Glasair forum to work, so please indulge me if you will.

 



 



I've recently purchased a Glasair III.  I have been having continued problems with a very rough running engine.  

It will run fine for 15 minutes then start running rough and losing power.  

It has even quit running completely.  

The fuel system has been cleaned (injectors, fuel distributor, gascolator and filter, and screen filters).  It still has the same problem.  

It will run fine for awhile, then very rough or not at all (on the ground and in the air).  

There is no obvious problem that we can find as everything previously mentioned has been double checked again.  

Problem occurs with or without the boost pump on.  The last time the engine would run at 17" MP but no more.



 



The latest "guess" is the fuel servo.  The only thing that has not been checked (other than the fuel servo) is the fuel selector valve.  

So far alot of effort (and $$$) have been spent with no solution.  

I hate to spend big $$$ on a now or rebuilt fuel servo and again find the same problem afterward.  Ideas?  HELP!  



 



My airplane is stuck at a small airfield in the middle of nowhere...please help.



 



BTW, I took the airplane to High Speed Composites in Ft. Pierce, FL to have this fixed as well as some gear work done.  I will never take my plane back there.



 



Jeff 

	


   Email and AIM finally together. You've gotta check out free AOL Mail!

 

  	  Quote: 	
		  

href="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List

href="http://forums.matronics.com">http://forums.matronics.com



	
	




 [quote][b]

darnpilot(at)aol.com
Guest

Posted: Wed Oct 24, 2007 4:30 am Post subject: Glasair III Engine/Fuel Problem

1) Ron, please give me your contact info.  

    

   2) The engine is an IO-540 with Bendix servo.  (Dave, I'll call you.)

    

   Thank you.

    

   Jeff

   904-234-8718

 

 

 --

darnpilot(at)aol.com
Guest

Posted: Wed Oct 24, 2007 5:06 am Post subject: Glasair III Engine/Fuel Problem

The real goofy part about all this is its intermittent. So far we've been lucky that every time its happened near an airport.

 

 I'll have to check the Glasair manual to see where all the filters are, but we've checked the servo screen, divider, injectors, gascolator, and replaced fuel filter. Have not checked fuel selector or if there are any screens there or at the tanks.

 

 Air is the other part of the equation, and now that its mentioned, I do not thinks its been checked. I guess the air filter and alternate air are the only points to check?

 

 Have not check the fuel flow into a bucket (have flowed the injectors - OK). The difficult problem is the intermittent nature. Fuel flow and pressure seems OK on the gauge (on the ground when the OK runups are done), but to be honest, when you're at 800' with a badly missing engine, gauges are secondary to getting on the ground. Boost pump makes no difference when it happens.

 

 Are there screens at the selector? Any other screens in the fuel system?

 

 Engine has 200 hours, built in 1990 and checked again in 1994. The fuel had crap and water in it when I picked it up, but its been cleaned up. That's the reason we've suspected fuel contamination and spent a lot of time getting that cleaned up, but air is something we must check too. I'm not a mechanic, but I wonder why they didn't check that too (or did they)?

 

 Remember before taking to the air (initially and after each "fix") we've done complete high power runups and all was fine. The engine ran good in the air on three occasions for about 15 minutes (taxi, run-up, takeoff, climb, cruise, and on one occasion - descent and touch and go) before it started the roughness/misfiring/loss of power. Mag checks are good. 

 

 One more item: The time it happened orbiting the field, we got to 2500' before it started again. I reduced power to 17.5" and it ran fine, but it would take no more throttle. Orbiting at 17.5" I checked boost pump/magnetos - worked fine. I did not check FF/pressure as the EI 800 gauges on this plane seem unreliable (plus I probably forgot in the commotion).

 

 Engine compressions are between 62-72. Attitude seems to make no difference (mine or the airplanes).

 

 Help?!?

 

 Jeff

 904-234-8718

 

 

 

 --

darnpilot(at)aol.com
Guest

Posted: Mon Oct 29, 2007 6:01 am Post subject: Glasair III Engine/Fuel Problem

Update:

    

   I spoke with the fuel servo overhauler this am.  He says the servo does have some minor issues and "should" be overhauled (big surprise).  That said, he does not believe the problems I've been having were caused by the servo.  So I'm poorer, and effectively back to square one.

 

 I guess I'm going to have to change all the fuel lines, triple check the fuel venting, and make a sacrifice to the aviation gremlin gods (along with my dwindling bank account) to be able to get this airplane back home.

 

 Anybody have any other suggestions?

 

 I'm about to give up.  Anybody interested in a Glasair III...cheap (FOB Okeechobee, FL - OBE)?

 

 Jeff

 

 

 --

speckter(at)comcast.net
Guest

Posted: Mon Oct 29, 2007 8:39 am Post subject: Glasair III Engine/Fuel Problem

I had fuel problems on my Glasair III that were caused by a leaking o ring on the fuel filter canister.  It was intermittent, and drove me nuts until I found it.  All Gaskets should be replaced in the filter and housing when changing the fuel filter.  I could solve my problem with the boost pump though, so I am not sure your problem is the same as mine, but checking the gaskets is always good.  

   

Gary  

40274  

         

  

From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of darnpilot(at)aol.com

 Sent: Monday, October 29, 2007 10:00 AM

 To: rv10-list(at)matronics.com

 Subject: Re: Glasair III Engine/Fuel Problem  

  

     

Update:  

    

   

    

I spoke with the fuel servo overhauler this am.  He says the servo does have some minor issues and "should" be overhauled (big surprise).  That said, he does not believe the problems I've been having were caused by the servo.  So I'm poorer, and effectively back to square one.

 

 I guess I'm going to have to change all the fuel lines, triple check the fuel venting, and make a sacrifice to the aviation gremlin gods (along with my dwindling bank account) to be able to get this airplane back home.

 

 Anybody have any other suggestions?

 

 I'm about to give up.  Anybody interested in a Glasair III...cheap (FOB Okeechobee, FL - OBE)?

 

 Jeff

 

 

 --

darnpilot(at)aol.com
Guest

Posted: Sat Nov 03, 2007 3:12 am Post subject: Glasair III Engine/Fuel Problem

I'm back. The O/H servo was installed and after finally getting the engine compartment all back together, I ran and then test flew the airplane. All was well, including the :30 minutes flight test.

 

 I ran the engine at full power, climb power, cruise power, low power, and except for some slight roughness at low power (I might be a little too sensitive now, but it was my impression) it ran flawlessly.

 

 So, I guess it was the servo. I had to leave the plane at OBE. Now I need to arrange some way to pick up the plane, either by rental car & drop off, or an airplane ride. Anybody going my way ?

 

 We did get some light brown/beige stuff out of the main tank even after multiple sumps. Looks kind of like rust, but I suspect it is residue from fiberglass & foam as part of the construction process. Are others getting this "stuff"?  Header sumps fine.

 

 Thanks for all the input, it was most helpful. 

 

 Jeff

 904-234-8718

 Jacksonville, FL

 

 

 

    	  Quote: 	
		   	


   Email and AIM finally together. You've gotta check out free AOL Mail! 

  [quote][b]

Dave(at)AirCraftersLLC.co
Guest

Posted: Sat Nov 03, 2007 11:01 am Post subject: Glasair III Engine/Fuel Problem

Jeff, you still wanna  sell? 

  

  Dave Saylor

 AirCrafters LLC

 140 Aviation Way

 Watsonville, CA 

 831-722-9141

 831-750-0284 CL

 www.AirCraftersLLC.com



 



  	  Quote: 	
		   	


   Email and AIM finally together. You've gotta check out free AOL Mail!



[quote]



href="http://www.matronics.com/contribution">http://www.matronics.com/chref="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List

href="http://forums.matronics.com">http://forums.matronics.com



[b]

darnpilot(at)aol.com
Guest

Posted: Sat Nov 03, 2007 1:44 pm Post subject: Glasair III Engine/Fuel Problem

LOL...got me.

    

   Jeff

 

 

 --

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