So I just put billowed up pipes and changed the broken O ring in the turbo housing. Put everything back together and checked for a boost leak with the home made tester. Boots and everything ARE OK. I can hear air escaping from what seems to be the valve cover or intake. I realize that I am charging my crank case as well but it still concerns me that air is escaping from somewhere besides the CCV. I read the following forum and this guy had the same issue and after he found out he was charging his crank case he was nolonger worried. . . . . Well I am. Sorry for the wordy post.

Heres the link to the other forum:
Boost leak through valve cover - PowerStrokeNation : Ford Powerstroke Diesel Forum

 

no...
you need to hook your boost leak cap up after the plastic adapter between the two boots.
hook it in directly to the rubber boot connected to the turbo inlet.

 

so I shouldent be worried that my crank case is leaking pressure from somewhere under the valve cover?

 

or could it be leaking from around the suspected bad #8 injector from the combustion chamber? Sounds too loud to be UNDER the valve cover though

 

On a cold engine the piston ring gaps are approx 0.020". Every cylinder that has an intake valve open is gonna let air into the crank case. Crank case pressure will vent out through the valve covers.

 

EXCELLENT! Thank you for the straight forward answer. Im brand spanking new to diesels.

 

no way is an engine that will hold 350+psi compression going to bleed down that much pressure from a boost leak test. if he is putting the adapter in the right place... there should be miniscule bleed down through the block.

Op ... to demonstrate the plausibility try spinning your motor over for a few ticks to get your cylinders nice and squirted. that should eliminate .020x8x what like .010-020x.125ish?

miniscule. ring gap, piston to cylinder wall, ring width. x8.

 

truck runs like a champ and dosent burn any oil. . . Im putting the tester where the air filter is therefore charging the block through the CCV. So no im not putting it in the right place. But still I was concerned that crank case pressure was audiable through the VC. Makes me wonder if ive got a leaky VC gasket.

 

Please tell me you're not pressurizing your crankcase through the ccv.

 

yeah like a *******. not any more. I hear you can blow main seals doing that. It wasent even 15 lbs. Im trying to down play it so I dont freak out. . .

 

did you disconnect the PCV before doing the boost leakdown test? if not you will hear it leaking out of the valve covers.

 

Maybe I'm confused but when I hook the Dieselsite Tester up and follow the instructions given by Dieselsite I do get some airflow out the 90 degree hose on the doghouse. Intructions are clear to pressurize intake to 10-15 psi on the tester air gage, shut-off airflow using the ball valve on tester and check for leaks. It does say that the pressure will bleed down through the valves in 30 - 45 seconds. I start to get airflow out the CCV tube at as low as 7 psi? The air coming out smells like crankcase oil . Is air coming out the CCV hookup hose normal. Here's two pictures of my hookup.

 

Some air is normal, too much isn't. For reference, iirc, I think mine took between 10-15 seconds to bleed off 20psi once I shut the ball valve.

Any pressure differential from either side of the piston rings will bleed past them whether is 1psi, or 1000psi.