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Fuel dripping from airbox 914 ?

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frans(at)privatepilots.nl
Guest

Posted: Fri Mar 26, 2010 8:14 am Post subject: Fuel dripping from airbox 914 ?

During the winter months, awaiting an opportunity for weighing the

airplane, I kept the Europa with empty tanks.

(Weighing has been done by now: 421Kg, CG exactly in the middle).



Now, in preparation to first flight, I decided to fill the tanks again.

After I swicthed on the fuel pump, I noticed that my fuel flow gauge

indicated a flow of 2.5 L/h, without the engine running. I thought of

air entrapped in the sensor, until I noticed that fuel was leaking from

the cowling. Further investigation revealed that the overflow of the

airbox on the port side was spilling fuel.



Fuel pressure is correct.



So, I guess there is something wrong with the port carb. So far, for all

my Europa related problems, someone on the forum could help me to find a

solution. Before I start disassembling the carburator, I would like to

get a confirmation that that is what I should be doing, and if there is

anything else that could be the cause, or if there is any other

solution, I would like to hear.



First flight can be performed as soon as weather cooperates and a

suitable test pilot has time for this, so I hope this problem can be

solved without causing a delay....



Thanks in advance for any insight.

Frans

- The Matronics Europa-List Email Forum -

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rlborger(at)mac.com
Guest

Posted: Fri Mar 26, 2010 8:52 am Post subject: Fuel dripping from airbox 914 ?

Frans,



Off the top of my head, I'd guess a sticky float or restriction in the fuel return line.  



Any other ideas out there?



Bob Borger

 

On Friday, March 26, 2010, at 11:12AM, "Frans Veldman" <frans(at)privatepilots.nl> wrote:

 	  Quote: 	
		  



During the winter months, awaiting an opportunity for weighing the

airplane, I kept the Europa with empty tanks.

(Weighing has been done by now: 421Kg, CG exactly in the middle).



Now, in preparation to first flight, I decided to fill the tanks again.

After I swicthed on the fuel pump, I noticed that my fuel flow gauge

indicated a flow of 2.5 L/h, without the engine running. I thought of

air entrapped in the sensor, until I noticed that fuel was leaking from

the cowling. Further investigation revealed that the overflow of the

airbox on the port side was spilling fuel.



Fuel pressure is correct.



So, I guess there is something wrong with the port carb. So far, for all

my Europa related problems, someone on the forum could help me to find a

solution. Before I start disassembling the carburator, I would like to

get a confirmation that that is what I should be doing, and if there is

anything else that could be the cause, or if there is any other

solution, I would like to hear.



First flight can be performed as soon as weather cooperates and a

suitable test pilot has time for this, so I hope this problem can be

solved without causing a delay....



Thanks in advance for any insight.

Frans

- The Matronics Europa-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:

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frans(at)privatepilots.nl
Guest

Posted: Mon Mar 29, 2010 1:37 pm Post subject: Fuel dripping from airbox 914 ?

On 03/26/2010 05:51 PM, Bob Borger wrote:



 	  Quote: 	
		   Off the top of my head, I'd guess a sticky float or restriction in the fuel return line.  


	


It appeared to be a sticky float or valve. I took the carb out, cleaned

it although I couldn't find anything serious that could have clogged the

valve or float, just some residu left from evaporated fuel. Apparently

that did it, no more fuel overflow, and the engine, after rebalancing

the carbs, ran fine.



My previous problem after a long pause, oil seeping into the turbo

housing to be blown out at the first start, was this time almost non

existent. Just a little bit of oil was collected in 4 months, far less

than previous winter stop. I guess it was indeed a seal that needed to

"settle".



So, first flight can be performed any time now, as soon as weather and

testpilots cooperate. 



Frans

- The Matronics Europa-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?Europa-List

rlborger(at)mac.com
Guest

Posted: Mon Mar 29, 2010 2:02 pm Post subject: Fuel dripping from airbox 914 ?

Frans,



Great!  Now lay in some aspirin to take care of the sore muscles in your face from the grin you are about to develop.



Wishing you light breezes and severe clear.  Have a great first flight.



Bob Borger



 

On Monday, March 29, 2010, at 04:28PM, "Frans Veldman" <frans(at)privatepilots.nl> wrote:

 	  Quote: 	
		  



On 03/26/2010 05:51 PM, Bob Borger wrote:



> Off the top of my head, I'd guess a sticky float or restriction in the fuel return line.  



It appeared to be a sticky float or valve. I took the carb out, cleaned

it although I couldn't find anything serious that could have clogged the

valve or float, just some residu left from evaporated fuel. Apparently

that did it, no more fuel overflow, and the engine, after rebalancing

the carbs, ran fine.



My previous problem after a long pause, oil seeping into the turbo

housing to be blown out at the first start, was this time almost non

existent. Just a little bit of oil was collected in 4 months, far less

than previous winter stop. I guess it was indeed a seal that needed to

"settle".



So, first flight can be performed any time now, as soon as weather and

testpilots cooperate. 



Frans

- The Matronics Europa-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?Europa-List

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