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Induction leaks where and how did you find them

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recapen(at)earthlink.net
Guest

Posted: Tue May 27, 2014 9:39 am Post subject: Induction leaks where and how did you find them

Folks,



I'm still chasing a small induction leak impacting only my #1 cylinder.

I'm trying to list all of the potential places and methods of testing.



Places so far:



Upper injection port fitting or plug

Injection fitting assembly

Lower injection port fitting or plug

Intake runner in sump

Intake runner connecting hose

Intake runner pipe

Intake runner gasket at cylinder head

Valve cover gasket 

Rocker arm oil drain fitting at engine case

Rocker arm oil drain fitting connection hose

Rocker arm oil drain fitting at cylinder head

(last four most likely with loose intake valve guide as a leak path contributor)



Testing methods so far:

Tighten worm clamp screws

Replace gasket

Replace hose

Spraying water on suspected area with engine running (DANGER WILL ROBINSON!)



Where have you found them and how have you found them?



Thanks,

Ralph Capen

RV6A N822AR "Patience" (at) N06 with 210 hrs on IO360B1F6 with AFP Injection

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flying-nut(at)cfl.rr.com
Guest

Posted: Tue May 27, 2014 9:52 am Post subject: Induction leaks where and how did you find them

intake leaks .....

Clean out a shop-vac (really clean) that will hook up the hose to blow 

instead of suck.

Put the hose in the intake and pack rags around it to help hold it in.

Turn on the shop-vac.

Spray soapy water all around the intake system.  If the intake coupling 

hoses are tight the next place is the tube that goes into the oil pan.



oil leaks

Same as above except put the hose in the oil filler tube and plug the 

crankcase vent .... loosely.

Spray soapy water everywhere!!!  May take a while for the air to force 

the oil out of it's leak path.

Linn



On 5/27/2014 1:38 PM, Ralph E. Capen wrote:

 	  Quote: 	
		   



 Folks,



 I'm still chasing a small induction leak impacting only my #1 cylinder.

 I'm trying to list all of the potential places and methods of testing.



 Places so far:



 Upper injection port fitting or plug

 Injection fitting assembly

 Lower injection port fitting or plug

 Intake runner in sump

 Intake runner connecting hose

 Intake runner pipe

 Intake runner gasket at cylinder head

 Valve cover gasket

 Rocker arm oil drain fitting at engine case

 Rocker arm oil drain fitting connection hose

 Rocker arm oil drain fitting at cylinder head

 (last four most likely with loose intake valve guide as a leak path contributor)



 Testing methods so far:

 Tighten worm clamp screws

 Replace gasket

 Replace hose

 Spraying water on suspected area with engine running (DANGER WILL ROBINSON!)



 Where have you found them and how have you found them?



 Thanks,

 Ralph Capen

 RV6A N822AR "Patience" (at) N06 with 210 hrs on IO360B1F6 with AFP Injection

 -----

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 Checked by AVG - www.avg.com

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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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ceengland7(at)gmail.com
Guest

Posted: Tue May 27, 2014 9:58 am Post subject: Induction leaks where and how did you find them

On 5/27/2014 12:38 PM, Ralph E. Capen wrote:

 	  Quote: 	
		   



 Folks,



 I'm still chasing a small induction leak impacting only my #1 cylinder.

 I'm trying to list all of the potential places and methods of testing.



 Places so far:



 Upper injection port fitting or plug

 Injection fitting assembly

 Lower injection port fitting or plug

 Intake runner in sump

 Intake runner connecting hose

 Intake runner pipe

 Intake runner gasket at cylinder head

 Valve cover gasket

 Rocker arm oil drain fitting at engine case

 Rocker arm oil drain fitting connection hose

 Rocker arm oil drain fitting at cylinder head

 (last four most likely with loose intake valve guide as a leak path contributor)



 Testing methods so far:

 Tighten worm clamp screws

 Replace gasket

 Replace hose

 Spraying water on suspected area with engine running (DANGER WILL ROBINSON!)



 Where have you found them and how have you found them?



 Thanks,

 Ralph Capen

 RV6A N822AR "Patience" (at) N06 with 210 hrs on IO360B1F6 with AFP Injection



Shop vac in blower mode on intake; soapy water on all the joints & other 
	


potential leak points.

(Blower mode means plumb the output to the engine's intake; NOT as boost 

for a running engine...)



Charlie

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