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Primer bulb failure

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Richard Pike

Joined: 09 Jan 2006
Posts: 1670
Location: Blountville, Tennessee

Posted: Fri Dec 11, 2015 2:11 pm Post subject: Primer bulb failure

Tried to start the FSII last week, the priming system was not priming, you can get an idea of how it is plumbed on this page: http://oh2fly.net/oldpoops/Fuel_tanks_storage.html



Primer bulb was not working, put in a new one and cut the old one in half with an X-acto knife. Very interesting: the inside was coming apart in strange ways. Note a couple little fragments of rubber right next to the ends where the check valves are. They are not a result of cutting the bulb apart, they were there and got discovered. Guaranteed to make the bulb not work right.

Don't remember how old this bulb is, but they obviously have a fairly short service life, probably ought to replace at annual.

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Richard Pike
Kolb MKIII N420P (420ldPoops)
Kingsport, TN 3TN0

Forgiving is tough, being forgiven is wonderful, and God's grace really is amazing.

Richard Pike

Joined: 09 Jan 2006
Posts: 1670
Location: Blountville, Tennessee

Posted: Sat Dec 12, 2015 7:14 am Post subject: Re: Primer bulb failure

Matt Dralle :  Please delete this thread - it appears to be a duplicate.

???

Do not archive.

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Richard Pike
Kolb MKIII N420P (420ldPoops)
Kingsport, TN 3TN0

Forgiving is tough, being forgiven is wonderful, and God's grace really is amazing.

rowedenny

Joined: 09 Mar 2008
Posts: 338
Location: Western PA

Posted: Sun Dec 13, 2015 5:08 am Post subject: Primer bulb failure

I believe 7 psi is too high for our Bing carbs?



Dennis "Skid" Rowe



[quote] On Dec 12, 2015, at 8:20 AM, Denny Baber <baberdk(at)gmail.com> wrote:

 

 I put a small 7lb pressure metal 12v fuel pump in series between the filter and the stock fuel pump. A switch on the dash allows me to prime the system and then shut it off, but it will also run the engine if the stock fuel pump stops operating in case of flight emergency. I see no reason it can't take over if the stock check valve fails, or the stock pump or pulse line fails. I read that the fuel system is the number one cause of engine stoppage. Gasohol uses plant-based alcohol and it eats rubber. The pump I picked up at Autozone is made to run with gasohol, and doesn't restrict flow when shut off

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lcottrell

Joined: 29 May 2006
Posts: 1494
Location: Jordan Valley, Or

Posted: Sun Dec 13, 2015 7:15 am Post subject: Primer bulb failure

It should be three to five.Larry



On Sun, Dec 13, 2015 at 6:07 AM, Dennis Rowe <rowedenny(at)windstream.net (rowedenny(at)windstream.net)> wrote:

 	  Quote: 	
		  I believe 7 psi is too high for our Bing carbs?



Dennis "Skid" Rowe



On Dec 12, 2015, at 8:20 AM, Denny Baber <baberdk(at)gmail.com (baberdk(at)gmail.com)> wrote:

 	  Quote: 	
		  I put a small 7lb pressure metal 12v fuel pump in series between the filter and the stock fuel pump. A switch on the dash allows me to prime the system and then shut it off, but it will also run the engine if the stock fuel pump stops operating in case of flight emergency. I see no reason it can't take over if the stock check valve fails, or the stock pump or pulse line fails. I read that the fuel system is the number one cause of engine stoppage. Gasohol uses plant-based alcohol and it eats rubber. The pump I picked up at Autozone is made to run with gasohol, and doesn't restrict flow when shut off.Respectfully,

Dennis Baber

[url=tel:%28305%29%20814-7218](305) 814-7218[/url]

baberdk(at)gmail.com (baberdk(at)gmail.com)

Receive gracefully and share; that's all there is.









 



 

	


	




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racerjerry

Joined: 15 Dec 2009
Posts: 202
Location: Deer Park, NY

Posted: Mon Dec 14, 2015 6:43 am Post subject: Re: Primer bulb failure

Larry,

Do you mean that the odds are 3 to 5 that the engine won't quit after using the Autozone pump for 2 years on gasohol?

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Jerry King

lcottrell

Joined: 29 May 2006
Posts: 1494
Location: Jordan Valley, Or

Posted: Mon Dec 14, 2015 10:52 am Post subject: Primer bulb failure

More like 3 to 5 that you will be smelling gas in your future.

 Larry On Dec 14, 2015 7:47 AM, "racerjerry" <gnking2(at)verizon.net (gnking2(at)verizon.net)> wrote: 	  Quote: 	
		  --> Kolb-List message posted by: "racerjerry" <gnking2(at)verizon.net (gnking2(at)verizon.net)>

 

 Larry,

 Do you mean that the odds are 3 to 5 that the engine won't quit after using the Autozone pump for 2 years?    

 

 --------

 Jerry King

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=450944#450944

 

 

 

 

 

 

 

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